Biological Control

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Biological Control
of Insect Pests:
Southeast Asian
Prospects
D.F. Waterhouse

Biological Control of
Insect Pests:
Southeast Asian Prospects

D.F. Waterhouse
(ACIAR Consultant in Plant Protection)

Australian Centre for International Agricultural Research
Canberra
1998

The Australian Centre for International Agricultural Research (ACIAR) was
established in June 1982 by an Act of the Australian Parliament. Its primary
mandate is to help identify agricultural problems in developing countries and to
commission collaborative research between Australian and developing country
researchers in fields where Australia has special competence.
Where trade names are used this constitutes neither endorsement of nor
discrimination against any product by the Centre.

ACIAR MONOGRAPH SERIES
This peer-reviewed series contains the results of original research supported by
ACIAR, or deemed relevant to ACIARÕs research objectives. The series is
distributed internationally, with an emphasis on the Third World

©Australian Centre for International Agricultural Research
GPO Box 1571, Canberra, ACT 2601.
Waterhouse, D.F. 1998, Biological Control of Insect Pests: Southeast Asian Prospects.
ACIAR Monograph No. 51, 548 pp + viii, 1 fig. 16 maps.
ISBN 1 86320 221 8
Design and layout by Arawang Communication Group, Canberra
Cover: Nezara viridula adult, egg rafts and hatching nymphs.
Printed by Brown Prior Anderson, Melbourne

ii

Contents
Foreword

vii

1 Abstract

1

2 Estimation of biological control prospects

2

3 Introduction

3

4 Target insect pests

9

4.1

4.2

4.3

4.4

Agrius convolvuli

9

Rating
Origin
Distribution
Biology
Host plants
Damage
Natural enemies
Attempts at classical biological control
Discussion

10
10
10
10
11
11
11
14
16

Anomis flava

17

Rating
Origin
Distribution
Biology
Host plants
Damage
Natural enemies
Attempts at classical biological control
Major natural enemies
Discussion

18
18
18
18
19
19
21
27
31
31

Aphis craccivora

33

Rating
Origin
Distribution
Biology
Host plants
Damage
Natural enemies
Comments

34
34
34
34
35
35
36
44

Aphis gossypii

45

Rating
Origin
Distribution
Biology
Host plants
Damage

46
46
46
46
47
47

iii

4.5

4.6

Natural enemies
Attempts at biological control
The major parasitoid species
An aphid-specific predator
Comments

48
60
70
79
80

Cosmopolites sordidus

85

Rating
Origin
Distribution
Biology
Damage
Host plants
Natural enemies
Attempts at biological control
Biology of main natural enemies
Comments

86
86
86
87
88
89
89
95
103
104

Deanolis sublimbalis
Synonyms
Rating
Origin
Distribution
Biology
Host plants
Damage
Natural enemies
Comment

4.7

Diaphorina citri
Rating
Origin
Distribution
Biology
Host plants
Damage
Natural enemies
Attempts at biological control
Major natural enemies
Comments

4.8

Dysdercus cingulatus
Rating
Origin
Distribution
Biology
Host plants
Damage
Natural enemies
Comment

4.9

Dysmicoccus brevipes
Rating
Origin
Distribution
Taxonomy

iv

105
106
106
106
106
107
108
109
111
112

113
114
114
114
115
116
116
120
127
131
133

135
136
136
136
136
137
137
137
138

141
142
142
142
142

Biology
Hosts
Damage
Natural enemies
Attempts at biological control
Major natural enemies
Comments

143
144
144
145
145
155
156

4.10 Hypothenemus hampei

157

Rating
Origin
Distribution
Biology
Host plants
Damage
Natural enemies
Attempts at biological control
Major parasite species
Comments

158
158
158
159
163
164
166
170
176
180

4.11 Leucinodes orbonalis
Rating
Origin
Distribution
Biology
Host plants
Damage
Natural enemies
Attempts at biological control
Major natural enemies
Comments

4.12 Nezara viridula
Rating
Origin
Distribution
Biology
Damage
Natural enemies
The role of pheromones and other chemical secretions
Attempts at biological control
Biology of the major species
Comments

4.13 Ophiomyia phaseoli
Rating
Origin
Distribution
Biology
Host plants
Damage
Natural enemies
Attempts at biological control
The more important parasitoids
Comment

185
186
186
186
187
187
189
189
192
192
194

197
198
198
198
199
199
200
208
209
228
233

235
236
236
236
237
237
238
239
249
251
255

v

4.14 Phyllocnistis citrella
Rating
Origin
Distribution
Biology
Host plants
Damage
Natural enemies
Attempts at biological control
Major natural enemies
Comment

4.15 Planococcus citri
Rating
Origin
Distribution
Biology
Host plants
Damage
Natural enemies
Attempts at biological control
Biology of important natural enemies
Comments

4.16 Trichoplusia ni
Rating
Origin
Distribution
Biology
Host plants
Damage
Natural enemies
Introductions for biological control of T. ni
Major parasitoid species
Comment

257
258
258
258
259
262
263
264
279
282
285

287
288
288
288
289
289
290
290
296
311
315

317
318
318
318
318
319
320
320
334
340
345

5 References

349

6 Index of scientific names of insects

477

7 General index

531

vi

Foreword

Since its inception in 1982, ACIAR has been a very strong supporter
of classical biological control as a key element in the management of
exotic arthropod and weed pests. When practiced with appropriate
safeguards, it often provides a sustainable and environmentally
friendly alternative to the growing use of pesticides, particularly
when integrated, if necessary, with the use of resistant plant varieties
and cultural controls.
Classical biological control has been very successful in regions of
the world (e.g. Australia, California, New Zealand, Oceania) where a
large number of the major insect pests and weeds are exotic. This
situation applies to a far lesser extent to Southeast Asia but, in a
recent survey commissioned by ACIAR, Waterhouse (1993b)
identified 40 major arthropod pests that merited evaluation as
possible targets for biological control. Not all of these (e.g. the
indigenous fruit flies) are attractive targets, but some at least are.
The present volume is a companion to Biological Control of
Weeds: Southeast Asian Prospects (Waterhouse 1994). It
summarises what is known about the natural enemies (principally the
parasitoids) of the major exotic insect pests and indicates prospects
for their biological control. The aim has been to facilitate, for
countries of the region, the selection of promising individual, or
collaborative, priority insect pest targets. This should also provide
donor agencies with a readily accessible overview of the regionÕs
major exotic insect pest problems and with an evaluation, where
possible, of prospects for their amelioration by introduction of
natural enemies. This should assist in the selection, for support, of
projects that are best suited to their individual terms of reference.
R. Clements
Director
Australian Centre for International
Agricultural Research

vii

Introduction

1

1

Abstract
Biological control programs have been mounted in some region(s) of the
world against 13 of the 16 dossier pests and substantial or partial success has
been achieved in one or more countries for 8. On the basis of available
information there are good to excellent prospects for reducing, in at least
some parts of the region, the damage caused by the following: Leucinodes
orbonalis, Nezara viridula, Ophiomyia phaseoli and Planococcus citri.
There are also good reasons for believing that there will prove to be valuable
natural enemies for the following: Agrius convolvuli, Anomis flava, Aphis
craccivora, Aphis gossypii, Diaphorina citri, Dysmicoccus brevipes,
Hypothenemus hampei, Phyllocnistis citrella and Trichoplusia ni. There
seems to be little prospect for classical biological control of Dysdercus
cingulatus, too little is known about Deanolis sublimbalis and the prospects
for control of Cosmopolites sordidus are unclear, although its lack of pest
status in Myanmar is puzzling.

2

2

Biological Control of Insect Pests: Southeast Asian Prospects

Estimation of biological control
prospects

Insect

Agrius convolvuli
Anomis flava
Aphis craccivora
Aphis gossypii
Cosmopolites sordidus
Deanolis sublimbalis
Diaphorina citri
Dysdercus cingulatus
Dysmicoccus brevipes
Hypothenemus hampeii
Leucinodes orbonalis
Nezara viridula
Ophiomyia phaseoli
Phyllocnistis citrella
Planococcus citri
Trichoplusia ni

Rating Family

7
10
15
19
13
3
8
11
10
12
15
10
14
16
7
7

Sphingidae
Noctuidae
Aphididae
Aphididae
Curculionidae
Pyralidae
Psyllidae
Pyrrhocoridae
Pseudococcidae
Scolytidae
Pyralidae
Pentatomidae
Agromyzidae
Phyllocnistidae
Pseudococcidae
Noctuidae

Any
biological
control
successes

Attractiveness
as a target in
SE Asia

yes
yes
?
yes
?
no
yes
no
yes
yes
no
yes
yes
yes
yes
yes

medium
low to medium
medium
medium
uncertain
uncertain
medium
v. low
medium
medium
medium to high
high
high
medium
high
medium

Introduction

3

3

Introduction
Waterhouse (1993b) published information, collected from agricultural and
weed experts in the 10 countries of Southeast Asia, on the distribution and
importance of their major arthropod pests in agriculture. Ratings were
supplied on the basis of a very simple system
+++

very widespread and very important

++

widespread and important

+

important only locally

P

present, but not an important pest

The advantages and limitations of this system were discussed by
Waterhouse (1993b). Of 160 insect and mite pests nominated as important in
Southeast Asia, a subset of 47 was rated as particularly so.
The aim of the present work has been to summarise information relevant
to the prospects for classical biological control of the most important of
those of this subset of 47 that are thought to have evolved outside Southeast
Asia. The assumption is that many of these have been introduced without
some (sometimes without any) of the natural enemies that help to control
them where they evolved. The chances are very much lower for arthropod
pests that evolved in Southeast Asia of introducing effective, sufficiently
host-specific, organisms from outside the region. On the other hand, there is
reason to believe that some parasitoids of pests that are thought to have
arisen in, or adjacent to, the Indian subcontinent may not yet occur
throughout the eastern region of Southeast Asia and several such pests are
dealt with.
In regional considerations of this sort, it is to be expected that not all of
the top 20, or even the top 10, of any one countryÕs arthropod pests will
necessarily be included. Indeed, at least some of those omitted might well
merit the production of additional dossiers if they are of such importance
locally that a biological control program might be justified. ACIAR would
be interested to learn of pests that might be considered in this category.
The summary accounts presented are designed to enable a rapid review
to be made of (i) the main characteristics of the principal insect pests of
agriculture that are believed to be exotic to part or all of Southeast Asia, (ii)
what is known of their enemies, particularly those that have high or
moderate levels of host specificity and (iii) what the prospects appear to be
for reducing their pest status by classical biological control.

4

Biological Control of Insect Pests: Southeast Asian Prospects

In most instances four databases (and particularly CABI) were searched
for relevant information:
AGRICOLA (Bibliography of Agriculture) 1970+
BIOSIS (Biological Abstracts) 1989+
CABI (CAB International) 1972+
DIALOG (Biological Abstracts) 1969+
In addition, in many instances abstracting journals and other published
sources prior to the above commencement dates were also searched.
Furthermore, useful information was also obtained from other references
and from unpublished records. Nevertheless, in many cases the search
cannot be described as exhaustive. Even more relevant than attempting an
exhaustive search would be a fresh, detailed, field survey targeted on the pest
in the region where it is causing problems. This is in order to determine what
natural enemies are already present and, in particular, whether any of the
organisms that might be considered for introduction are already present.
The species dealt with are drawn from tables 4 and 5 of ÔThe Major
Arthropod Pests and Weeds of Agriculture in Southeast Asia: Distribution,
Importance and OriginÕ (Waterhouse 1993b). It is quite possible that
additional arthropod pests rating highly in these tables will prove to be exotic
to Southeast Asia (or significant parts of it) and, alternatively, that some
considered to be exotic will, on further evidence, be shown to have evolved
in the region. The ratings of the pests in the Pacific and Southern China
included at the beginning of each dossier are based on information in
Waterhouse (1997) and Li et al. (1997).
The natural enemies most commonly selected against insect pests in
modern classical biological practice are specific or relatively specific
parasitoids. Although predators also clearly play an important role in
reducing pest numbers (and have achieved considerable successes against
scale insects and mealybugs) the majority of predators attack a wide
spectrum of hosts. National authorities responsible for approving the
introduction of biological control agents are becoming increasingly
reluctant to do so for natural enemies that may possibly have adverse effects
on non-target species of environmental significance. For this reason far more
emphasis has been placed in the dossiers on parasitoids than on predators.
There appears to be a widespread view that, when biological control
alone results in a spectacular reduction in pest populations (as it often does)
it is very worthwhile, but a lesser reduction is of little or no value. Nothing
can be further from the truth, since far lower levels can have a major impact
when integrated with other means of pest control. This applies particularly to

Introduction

5

integration with the use of plant varieties that are partially resistant to the
pest (Waterhouse 1993a).
Plant resistance serves to decrease numbers, in particular by lowering
reproductive rate and slowing growth rate. Resistance can be brought about
inter alia by alteration of the physical characteristics (e.g. hairiness, cuticle
thickness) of the plant and/or its chemical composition. If, as usually occurs,
parasitoids and predators are not affected to an equal extent, an improved
ratio of natural enemy to the pest will result and the impact of biological
control will be increased. This was pointed out many years ago (van Emden
1966; van Emden and Wearing 1965) and is well illustrated by glasshouse
tests with the aphis Schizaphis graminum on susceptible and resistant barley
and sorghum varieties and the parasitoid Lysiphlebus testaceipes (Starks et
al. 1972). If it is assumed, as in the illustrative example in Figure 1, that the
economic injury level is 100 aphids per plant, then neither the resistant
variety alone, nor the parasitoid alone will prevent the injury level being
exceeded, whereas the combination of resistance and parasitoids achieves
this by a wide margin. As another example, biological control of Myzus
persicae with Aphidius matricariae was only effective on chrysanthemums
if the variety involved was partly aphid resistant (Wyatt 1970).
300
Susceptible

No parasitoid

Resistant

200

Susceptible

Parasitoid
present

100

Resistant

0

0

1

2

3

4

Weeks

Figure 1.

Population growth of Schizaphis graminum on susceptible
and partly resistant barley in the presence and absence of the
parasitoid Lysiphlebus testiceipes.

6

Biological Control of Insect Pests: Southeast Asian Prospects

Efforts to achieve pest control by high levels of plant resistance alone
may prove counterproductive if significant energy or other resources are
diverted by the plant, since they cannot then be used for growth or
reproduction. Thus, van Emden (1991) quotes data on 31 pigeon pea
varieties screened at the International Crops Research Institute for the Semi
Arid Tropics for insect pod damage. These data predicted a 31% yield loss
for 90% resistance to insects. To accept a loss of this order is surely an
unacceptable ÔsolutionÕ to the problem, particularly when even a low level of
natural enemy attack combined with moderate plant resistance is likely to
achieve a far better yield. However, the interaction of resistance and natural
enemies may not be a simple one, as pointed out by Wellings and Ward
(1994) and such interactions urgently deserve further study. Nevertheless,
the fact remains that, when integrated appropriately with plant resistance and
other measures, even comparatively low levels of attack by natural enemies
can lead to disproportionately large improvements in pest control.
Although the major focus of the dossiers has been on the applicability of
the information to biological control in Southeast Asia, much has far wider
applicability. In particular, a great deal is relevant to classical biological
control in the oceanic Pacific which, until the past few decades, has received
almost all its important insect pests from Southeast Asia. A brief tabulation
of the distribution and importance of each pest in the Pacific is, therefore,
given at the beginning of each dossier. The key to Pacific Country
abbreviations is: Fr P, French Polynesia; FSM, Federated States of
Micronesia; Kiri, Kiribati; Mar Is, Marshall Islands; N Cal, New Caledonia;
PNG, Papua New Guinea; A Sam, American Samoa; Sam, Western Samoa;
Sol Is, Solomon Islands; Tok, Tokelau; Tong, Tonga; Tuv, Tuvalu; Van,
Vanuatu; W&F, Wallis and Futuna. The key to Southeast Asian countries is:
Myan, Myanmar (Burma); Thai, Thailand; Laos; Camb, Cambodia; Viet,
Vietnam; Msia, Malaysia; Sing, Singapore; Brun, Brunei; Indo, Indonesia;
Phil, Philippines.
In any biological control program it is essential that appropriate
procedures are adopted in relation to the selection of suitably host-specific
natural enemies, the gaining of approval for introduction and release from
the national authorities and safe procedures for eliminating unwanted fellow
travellers. Simple Guidelines for biological control projects in the Pacific
(Waterhouse 1991) are available from the South Pacific Commission,
Noumea and FAO has a Draft Code of Conduct for the Import and Release of
Biological Control Agents (1993).
Because there is a considerable lack of uniformity in the names applied
to many of the insects involved, a separate index is included listing the
preferred scientific names. These have been used in the text, replacing where

Introduction

7

necessary those used by the authors quoted. Where the name of an insect
used in a publication is no longer preferred by taxonomists, the superseded
name, x, is shown thus (= x), but this usage is not intended to convey any
other taxonomic message. Indeed, the superseded name may still be valid,
but simply not applicable to the particular species referred to by the author.
I am most grateful for assistance from many colleagues during the
preparation of this book. It is not possible to name them all, but special
thanks are due to a number of CSIRO colleagues, in particular to Dr K.R.
Norris for editorial assistance, Dr M. Carver for valuable advice on the Aphis
dossiers, J. Prance for bibliographic assistance and to several taxonomists,
including Dr M. Carver (Hemiptera), Dr P. Cranston (Diptera), E.D.
Edwards (Lepidoptera), Dr I.D. Naumann (Hymenoptera) and T. Weir
(Coleoptera). Others who have provided valuable information include D.
Smith (Queensland Department of Primary Industries), Dr P. Cochereau
(ORSTOM, Noumea) and Dr C. Klein Koch (Chile).
Continuing warm support has been provided by Dr P. Ferrar, Research
Program Coordinator, Crop Sciences, ACIAR, Canberra.
It is again a pleasure to acknowledge, warmly, the expert assistance of
Mrs Audra Johnstone in converting my manuscripts into presentable form.
It would certainly not have been possible to continue with these
biological control activities long into retirement without the unfailing
support, encouragement and forbearance of my wife, to whom my very
special thanks are due.

9

4
4.1

Target insect pests
Agrius convolvuli

China

++

India

Taiwan

++

Myanmar
P
Laos
20°
P

20°

Thailand

Philippines
P

+

Cambodia

+

Vietnam

++

+

P
Brunei

Malaysia




Singapore

Papua
New Guinea

++

Indonesia

+

20°

Australia

20°

The moth Agrius convolvuli is widespread in the tropics and subtropics, except for the
Americas where it does not occur.
It is an important pest, sporadically, of sweet potato and also attacks several important
legumes. For most of the time its populations are maintained at subeconomic levels,
apparently by several trichogrammatid egg parasitoids. These could be considered for
introduction as biological control agents where they do not already occur. The cause of
sporadic outbreaks is unknown.

10

Biological Control of Insect Pests: Southeast Asian Prospects

Agrius convolvuli (Linnaeus)
Lepidoptera: Sphingidae
sweet potato hawk moth, sweet potato hornworm
Synonym: Herse convolvuli

Rating
Southeast Asia
7

++
+
P

Viet, Indo
Thai, Camb
Msia
Myan, Brun

China

Southern and Western Pacific

++

+

N Cal, PNG

P

Widespread

2

Origin
Very widespread in tropical and subtropical areas of the world, except for
the Americas.

Distribution
Southern Europe: Azores, Crete, Malta, Sicily, Yugoslavia. Africa:
Algeria, Angola, Benin, Burundi, Cape Verde Is, Congo, Egypt, Ethiopia,
Ghana, Ivory Coast, Kenya, Libya, Madagascar, Madeira, Mali, Mauritius,
Morocco, Mozambique, Niger, Nigeria, Rwanda, St Helena, Senegal,
Seychelles, Sierra Leone, Somalia, South Africa, Sudan, Swaziland,
Tanzania, Togo, Tunisia, Uganda, Upper Volta, Zambia, Zimbabwe. Asia:
Andaman Is, Bangladesh, Bhutan, Cambodia, China, Christmas Is, Cyprus,
India, Indonesia, Iran, Iraq, Israel, Japan, Laos, Malaysia, Myanmar,
Pakistan, Philippines, Saudi Arabia, Singapore, Sri Lanka, Syria, Thailand,
Turkey, Vietnam. Australasia and Pacific Islands: Australia, Cook Is, Fiji,
Hawaii, Kiribati, Mariana Is, Marquesas Is, New Caledonia, New Zealand,
Niue, Norfolk Is, Papua New Guinea, Samoa, Solomon Is, Tonga, Tuvalu,
Vanuatu (CIE Map No 451, 1983).

Biology
The smooth eggs are laid singly on stems and leaves and, in common with
most other Lepidoptera, A. convolvuli larvae have 5 instars. There is a green,
a black and a brown form of larvae, which have, at the posterior end, a
uniformly curved, tapering, smooth dorsal horn. Fully grown larvae attain a
length of 9 cm. Pupation occurs in earthern cells several centimetres below
the soil surface. The pupa has a very characteristic proboscis, which is
enclosed in a looped tube not fused to the body (Kalshoven 1981; Common

4.1

Agrius convolvuli

11

1990). The mean development period at 25¡C in Japan was 21.2 days
(Setokuchi et al. 1985). In Egypt at 30¡C and 61% RH average
developmental periods were: larvae 14.4 days, prepupae 1.9 days and pupae
13 days (Awadallah et al. 1976). The moths often enter houses in the evening
and, when at rest, resemble pieces of bark. There are at least two generations
during summer, and winter is passed as a pupa.
An artificial diet containing powdered sweet potato leaf has been
developed (Kiguchi and Shimoda 1994). On this at 27¡C and with a day
length of 16 hours, A. convolvuli larvae moulted to the 5th instar 12 to 14
days after hatching, pupated at 21 to 26 days and adults emerged at 36 to 41
days. The 5th instar larvae grew to 8 cm in length and 11 to 12 g in weight
(Shimoda et al. 1994). Consumption of sweet potato leaves was greatest at
30¡C, the last instar eating 88% of the total dry weight (5 g) consumed
(Setokuchi et al. 1986).

Host plants
The main commercial host is sweet potato (Ipomoea batatas), but larvae also
attack other Ipomoea species [e.g. I. pescapreae, I. cairica, I. indica
(morning glory) I. hederifolia, (Moulds 1981)] and other Convolvulaceae
[e.g. Merremia dissecta; bindweed, Convolvulus arvensis; Awadallah et al.
1976; (Moulds 1981)]. Several pulses are attacked [e.g. wild mung, Vigna
vexillata (Govindan et al. 1989); moth bean, V. aconitifolia (Bhat et al.
1990); mung bean, V. radiata and urd bean, V. mungo (Shaw et al. 1989);
and also Phaseolus spp. (Nagarkatti 1973)]. A strain of moth bean (IPCMO
131) showed good resistance to attack (Bhat et al. 1990). In Papua New
Guinea taro is also recorded as a host (Smee 1965).

Damage
A. convolvuli larvae can defoliate sweet potato vines and, even when damage
is less severe, harvest is delayed, increasing the likelihood of major attack by
the sweet potato weevil, Cylas formicarius. Defoliation of pulses results in
partial or complete crop failure.

Natural enemies
These are shown in Table 4.1.1.

12

Table 4.1.1

Natural enemies of Agrius convolvuli

Species
DIPTERA

Zygobothria ciliata (= Sturmia macrophallus)

Reference

Ireland

Flemying 1918

Zimbabwe
Malaysia
Zimbabwe
Indonesia
Oman
Philippines

Cuthbertson 1934
Corbett & Miller 1933
Cuthbertson 1934
Baranoff 1934
Whitcombe & Erzinclioglu 1989
Kalshoven 1981

China

Wu 1983

China

Wu 1983

Central Europe
England
China
Japan
England

Fahringer 1922
Morley & Rait-Smith 1933
Wu 1983
Uchida 1924, 1930
Morley & Rait-Smith 1933

India

Nagarkatti 1973

HYMENOPTERA
BRACONIDAE
Apanteles spp.
EULOPHIDAE
species
ICHNEUMONIDAE
Amblyteles fuscipennis
Charops bicolor
Hadrojoppa cognatoria
Trogus exaltatorius
SCELIONIDAE
Telenomus sp.

Biological Control of Insect Pests: Southeast Asian Prospects

PHORIDAE
Megaselia rufipes
TACHINIDAE
Sturmia dilabida
Zygobothria (= Argyrophylax = Sturmia) atropivora

Country

Table 4.1.1 (contÕd) Natural enemies of Agrius convolvuli
Species
HYMENOPTERA
TRICHOGRAMMATIDAE
Trichogramma achaeae
Trichogramma agriae
Trichogramma australicum
Trichogramma chilonis
Trichogramma confusum
Trichogramma ?minutum
Trichogramma sp.

Country

Reference

India
India
India
Guam
India
Indonesia
Philippines

Nagarkatti 1973
Nagarkatti 1973
Nagarkatti 1973
Nafus & Schreiner 1986
Nagarkatti & Nagaraja 1978
Leefmans 1929; Kalshoven 1981
Shibuya & Yamashita 1936

Japan

Kushida et al. 1975

FUNGI
Entomophthora sp. Ôgrylli'Õ type

4.3
Agrius convolvuli
13

14

Biological Control of Insect Pests: Southeast Asian Prospects

Attempts at classical biological control
A species of Trichogramma, possibly T. australicum, (Nagarkatti 1973), has
been imported on two occasions (Table 4.1.2) to attack the eggs of pest
Lepidoptera, including Agrius convolvuli, but the resulting impact on
populations of the sweet potato hawk moth is not recorded.
Attempts at classical biological control of A. convolvuli

Table 4.1.2
Species
HYMENOPTERA

From

To

Year Result Reference

TRICHOGRAMMATIDAE
Trichogramma
USA
Indonesia before
?australicum
1929
Trichogramma
Philippines Japan
1929
?australicum

+
+

Leefmans 1929;
Nagarkatti 1973
Shibuya &
Yamashita 1936;
Nagarkatti 1973

CHINA
In Fujian Province, A. convolvuli larvae were parasitised by Charops bicolor
(Ichneumonidae), Apanteles spp. (Braconidae) and eulophid wasps (Wu
1983).
GUAM
A. convolvuli is a minor pest of sweet potato on Guam. When sweet potato
was intercropped with maize, A. convolvuli eggs were parasitised to the
extent of 70 to 100% by Trichogramma chilonis. This parasitoid attacks the
eggs of a range of sphingids and noctuids, including Ostrinia furnacalis, less
than 20% of whose eggs on maize were parasitised. A. convolvuli colonises
new sweet potato plantings as soon as cuttings strike and, by the 4th week,
30 to 60% of its eggs are parasitised. Each large egg produces 13 ± 7
parasitoids, which emerge about 10 days after the host egg is parasitised. It
was concluded that T. chilonis is a major mortality factor for the sweet potato
hornworm (Nafus and Schreiner 1986).
INDIA
A. convolvuli is an occasional pest of sweet potato, Vigna mungo and Vigna
radiata. Eggs are also laid on the leaves of Colocasia antiquorum and
Clerodendrum chinense, but no significant feeding occurs on these latter
plants.
Four species of parasitoid attack the eggs of A. convolvuli near
Bangalore: Trichogramma australicum, T. achaeae, T. agriae and a species
of Telenomus (Eulophidae). The abundance of each parasitoid varied with
the plant species on which the eggs were laid. T. agriae was the commonest
species in eggs collected on Colocasia, followed by T. achaeae and

4.1

Agrius convolvuli

15

Telenomus sp., up to a total of 43.6%. T. australicum, followed by
Telenomus sp., were the main species emerging from eggs on
Clerodendrum, up to a total of 63.9%. At no time were T. achaeae or
T. agriae reared from eggs on Clerodendrum. Furthermore, T. australicum
was reared only twice from Agrius eggs on Colocasia. These results
highlight the difficulty of reaching decisions on host specificity on the basis
of laboratory trials in a non-natural environment.
Up to 49 Trichogramma individuals were reared from a single
A. convolvuli egg and only in two instances were more than 1 species reared
from a single egg. These were 7 T. agriae and 4 T. australicum on one
occasion and 7 T. achaeae and 11 T. australicum in the second. Eggs
parasitised by Telenomus sp. usually produced 3 to 5 adults and at no time
did a Trichogramma emerge from the same egg as a Telenomus (Nagarkatti
1973). Later, an additional parasitoid (Trichogramma confusum) was
recorded from the eggs of A. convolvuli on Clerodendrum chinense
(Nagarkatti and Nagaraja 1978).
Nagarkatti (1973) suggested that the 4 former species might be
introduced where A. convolvuli is a pest and where they do not already
occur.
INDONESIA
Leefmans (1929) reported the parasitisation of A. convolvuli eggs by
Trichogramma minutum imported from America. However, Nagarkatti
(1973) suggests that, from the distribution of T. minutum at that time, it must
have been T. australicum or some other species of Trichogramma.
IRELAND
An adult A. convolvuli produced, soon after capture, many small puparia,
from which 76 Megaselia rufipes (Diptera, Phoridae) emerged (Flemying
1918).
JAPAN
A species of Trichogramma that parasitises the eggs of Chilo
suppressalis (= C. simplex) was imported in 1929 from the Philippines. It
was shown to parasitise also the eggs of A. convolvuli and 10 other species of
Lepidoptera belonging to several families (Shibuya and Yamashita 1936).
Nagarkatti (1973) suggests that the species was Trichogramma australicum.
OMAN
Adults of the tachinid Zygobothria ciliata emerged from puparia from a
larva collected on Ipomoea (Whitcombe and Erzinclioglu 1989).

16

Biological Control of Insect Pests: Southeast Asian Prospects

SOUTH AFRICA
A. convolvuli is a common pest in the eastern part of South Africa. Although
it is generally not abundant, from time to time large areas of sweet potatoes
have been almost completely defoliated by it. There are 3 generations a year
and overwintering occurs as the pupa. Natural enemies include the whitebellied stork (Ciconia nigra) which, on occasion, destroys large numbers of
larvae (Anon. 1927).
ZIMBABWE
A. convolvuli larvae on sweet potato were parasitised by the tachinids
Zygobothria atropivora and Sturmia dilabida, both of which are widely
distributed in South Africa. The latter parasitoid also attacks larvae of
Spodoptera exigua (Cuthbertson 1934).

Discussion
The majority of the parasitoids recorded as attacking A. convolvuli also
attack the eggs or larvae of a range of other Lepidoptera living in the same
environment. Many of these are pest species. Lack of parasitoid specificity is
a significant advantage when dealing with a strong flying species, such as
A. convolvuli, which can travel long distances, since the parasitoids are more
likely to be already present on some other host when adult moths arrive to
oviposit at a new site. On the other hand, lack of specificity is a disadvantage
if the non-target species that are attacked include environmentally important
species, the lowering of whose population density is considered undesirable.
In the present instance it is clear, from the information outlined earlier
under India that, whereas the Trichogramma egg parasitoids involved attack
the eggs of a range of species of Lepidoptera, they do so only when the eggs
are laid on particular host plants. In this sense they, indeed, display a
valuable degree of specificity, which should be taken into consideration
when deciding whether or not to proceed with introductions.
With these qualifications it is clear that the establishment, in areas where
they do not already occur, of any or all of 4 Trichogramma species
(T. achaeae, T. agriae, T. australicum, T. chilonis) is highly likely to lead to
a reduction to (or at least towards) subeconomic levels in the population of
A. convolvuli.
The underlying causes of the sporadic outbreaks of A. convolvuli are
unknown. Comparatively little work also has been carried out on the
parasitoids and more detailed studies may well reveal attractive new options
to pursue.

17

4.2

Anomis flava

China

++

India

Taiwan

Myanmar
P
Laos
20°
P

20°

Thailand

Philippines

+

Cambodia

+

Vietnam

+++

++

Brunei

Malaysia




Singapore

Papua
New Guinea

+

Indonesia

20°

Australia

20°

The noctuid moth Anomis flava occurs widely in Africa, Asia and Oceania, where its larvae
sporadically, but seriously, damage cotton, okra, kenaf and other Malvaceae: its adults are
fruit-sucking moths. Its sporadic occurrence suggests that it may be under effective
biological control for much of the time.
It is attacked by non-specific predators and by a number of parasitoids. Many of the
latter attack other Lepidoptera in the same plant environment and appear to be specific to
larvae in that environment rather than to individual species inhabiting it.
Further studies are needed to provide information on what the prospects are for
classical biological control.

18

Biological Control of Insect Pests: Southeast Asian Prospects

Anomis flava (Fabricius)
Lepidoptera: Noctuidae: Ophiderinae
cotton semi looper, green semi looper, okra semi looper
Synonyms: Cosmophila flava, Cosmophila indica. Cosmophila is
now regarded as a subgenus of Anomis. A. flava does not occur in
the Americas, where its equivalent is Anomis (Cosmophila) erosa
(Pearson 1958). Records of A. erosa in the Asian continent should
be referred to A. flava.

Rating
Southeast Asia
10

+++
++
+
P

Viet
Msia
Thai, Camb,
Indo
Myan, Laos, Phil

Southern China

Pacific

++

present, but not important

Origin
Unclear: could be Africa or Asia. Information available on specific or
reasonably specific parasitoids possibly favours Africa.

Distribution
Africa: Central and southern countries, including Angola, Benin,
Cameroun, Chad, Congo, Ethiopia, Gambia, Ghana, Ivory Coast, Kenya,
Madagascar, Malawi, Mali, Mauritius, Niger, Nigeria, Senegal, Somalia,
Sudan, Tanzania, Togo, Uganda, Upper Volta, Zambia, Zimbabwe. Asia:
Cambodia, China, India, Indonesia, Japan, Korea, Laos, Malaysia,
Myanmar, Pakistan, Philippines, Sri Lanka, Taiwan, Thailand, Vietnam.
Australasia and Pacific Islands: Australia, Cook Is, Fiji, Mariana Is,
Marquesas, New Caledonia, Papua New Guinea, Samoa, Solomon Is.,
Tonga, Vanuatu (CIE 1978), Rapa Is, Hawaii (Common 1990).

Biology
Most A. flava eggs are laid on the undersurface of leaves, the young larvae
are green, those of the last instar measure up to 35 mm in length and bear
short, lighter-green longitudinal lines and spots. Young larvae skeletonise
leaves, older larvae consume narrow leaf (roselle) cotton leaves and eat
irregular holes in broader leaves. Larval survival and growth are greater on

4.2

Anomis flava

19

hirsutum than on desi cotton (Sidhu and Dhawan 1979; Kalshoven 1981).
Pupation occurs in a cocoon spun between leaves. Development times have
been recorded on a number of occasions (for examples see Table 4.2.1, also
Schmitz 1968; Yu and Tu 1969), egg to adult taking about 3 weeks or a little
longer and the number of eggs laid ranging from 158 to 476, depending, in
part, upon the larval food plant. Groups of larvae normally pass through 5
moults whereas, when reared singly, up to 22% pass through 6 moults
(Kirkpatrick 1963; Essien and Odebiyi 1991). There are 5 overlapping
generations a year in Hunan Province, China, but fewer in some other
regions (Chen et al. 1991).
Adults rest in foliage by day and are active in the evening: they are
attracted to light.

Host plants
A. flava is a major, but sporadic, pest of cotton. Larvae also attack many
other plants, mainly in the family Malvaceae. These include, especially, okra
(Hibiscus esculentus), but also kenaf or Deccan hemp (H. cannabinus), jute
(H. sabadariffa), bele (H. manihot), muskmallow an important medicinal
plant (H. abelmoschus), shooflower (H. rosa-sinensis), hollyhock (Althaea
rosea), Arbutilon spp., Sida spp. and Urena spp. (all Malvaceae). However
they also attack tomato (Lycopersicon esculentum: Solanaceae); cowpea
(Vigna unguiculata) and green gram (Vigna radiata): Fabaceae; sweet
potato (Ipomoea batatas): Convolvulaceae; as well as melon (Citrullus
lanatus), Macadamia, Ricinus, Leea and Amaranthus spp. (Kalshoven 1981;
Yein and Singh 1981; Croix and Thindwa 1986; Gatoria and Singh 1988;
Essien and Odebiyi 1991).
Okra and hemp (kenaf) were the most favoured larval food plants,
whereas cotton and okra were the most favourable in terms of pupal weight
and adult fecundity (Rao and Patel 1973).

Damage
When abundant, A. flava larvae are capable of causing serious damage by
destroying the leaves and buds of cotton and other Malvaceous crops.
A. flava belongs to the subfamily Ophiderinae of noctuids, the adults of
which are often fruit-piercing species. In southern China, A. flava is reported
to be a serious pest of citrus fruit (Li et al. 1997) and, in Korea, A. flava is one
of a group of fruit-sucking moths observed to damage grapes and pears (Lee
et al. 1970).

Average figures (days) for development of Anomis flava

Stage

Rao & Patel 1973
2
3
1.8
1.9
2
3
1
6.2
21.1
31
158
1.25
6

21
28
350

Author
Ferino et al. 1982a Chen et al. 1991
2Ð3

4Ð5

11

12Ð16

6Ð11
19Ð23
10
492
3
7

22Ð29
4Ð7

Essien & Odebiyi 1991
2Ð7
2.4
1.8
2.2
2.2
2.3
1.4
7
28
19.8
476
3.3
12.4

Biological Control of Insect Pests: Southeast Asian Prospects

egg development
1st instar larva
2nd
3rd
4th
5th
prepupa
pupa
eggÐadult
female longevity
number of eggs
preÐoviposition
oviposition

Kalshoven 1981

20

Table 4.2.1

4.2

Anomis flava

21

A. flava is regarded as of only minor importance in the Pacific, which is
not surprising since none of its major larval host plants is of much economic
importance there.

Natural enemies
Those reported in the literature are listed in Table 4.2.2.
Egg parasitoids are Trichogramma spp., which on occasion can be
effective: in Mali, 92% parasitisation by Trichogramma sp. was recorded in
untreated cotton (Pierrard 1970), 12.1% to 15% in the Philippines (Ferino et
al. 1982a) and 60 to 80% of eggs on cotton were attacked by T. dendrolimi in
China (Wang et al. 1985, 1988).
As for larval parasitoids, Apanteles anomidis parasitised 27.5% in China
(Xie 1984), Aleiodes aligharensi and Aleiodes sp. together 5.2% in Chad
(Silvie et al. 1989), Charops bicolor 10.2% in China (Xie 1984), Meteorus
pulchricornis 4.9% in China (Xie 1984), Meteorus sp. 50 to 69.4% in Nepal
(Neupane 1977) and Winthemia dasyops 2.5% in Chad (Silvie et al. 1989).
Most other records did not indicate effectiveness or, if they did, it was lower
than 2.5% parasitisation.
A. flava pupae are attacked by at least 5 species of Brachymeria
(Chalcididae). In Madagascar, B. multicolor and B. tibialis parasitised 98%
of pupae in some fields (Steffan 1958).
Further details are provided in the country summaries. It is not easy to
discern a pattern from these although, under some conditions, parasitoids are
clearly able to have a major impact on A. flava populations.
Less is known about the effectiveness of predators, although pentatomid,
carabid, coccinellid, vespid and spider predators have been reported and the
Indian mynah bird consumed large numbers of larvae when they were
abundant (Khan 1956).
Unexplained disappearance of larvae is often attributed to predation,
although heavy rainfall may sometimes be responsible.
Bacillus thuringiensis has been recorded in the field from A. flava larvae
(Yin et al. 1991) and has given promising control on a number of occasions
(Angelini and Couilloud 1972; Delattre 1973; Anon 1976b; Wilson 1981;
Chen et al. 1991).
Both granulosis and polyhedrosis viruses have been recorded in the field
(Table 4.2.2) and it is possible that virus preparations might be used for
control.

Table 4.2.2

Natural enemies of Anomis flava

CARCINOPHORIDAE
Euborellia pallipes

Country

Reference

China

Yang 1985a

China

Wu et al. 1981

China

Wu et al. 1981

China

Wu et al. 1981

Australia
China
Australia

Kay & Brown 1991
Wu et al. 1981
Wilson 1981

China

Wu et al. 1981

India
Nigeria, Gold Coast
Cameroun
Australia
India
Australia
Senegal

Maheswariah & Puttarudriah 1956
Curran 1934
Deguine 1991
Curran 1934, 1938
Sohi 1964
Curran 1934, 1938; Kay & Brown 1991
Risbec 1950

22

Species
DERMAPTERA

HEMIPTERA

NEUROPTERA
CHRYSOPIDAE
Chrysopa sp.

DIPTERA
TACHINIDAE
?Isyropa
Cadurcia (= Sturmia) auratocaudata
Camplyocheta (= Elpe) sp.
Carcelia (= Zenilla) cosmophilae
Carcelia kockiana
Carcelia illota (= Zenilla noctuae)
Cylindromya (= Ocyptera) sp.

Biological Control of Insect Pests: Southeast Asian Prospects

ANTHOCORIDAE
Orius minutus
LYGAEIDAE
Geocoris sp.
NABIDAE
Nabis sinoferus
PENTATOMIDAE
Cermatulus nasalis
Eucanthecona (= Cantheconidia) furcellata
Oechalia schellembergii

Table 4.2.2 (contÕd) Natural enemies of Anomis flava
Species
DIPTERA
TACHINIDAE (contÕd)
Exorista apicalia
Exorista sorbillans
Palexorista inconspicua (= Sturmia bimaculata)
Palexorista quadrizonula
Sericophoromyia marshalli
unidentified
Winthemia dasyops
Zygobothria ciliata (= Sturmia macrophallus)

Reference

India
Australia
Africa
Africa
Tanzania
South Africa
Chad
Philippines
Chad
India

Sohi 1964
Kay & Brown 1991
Pearson 1958
Crosskey 1970
Robertson 1973
Taylor 1930
Silvie et al. 1989
Ferino et al. 1982a
Silvie et al. 1989
Thompson 1944; Sohi 1964

Chad
Chad
Philippines
China
Vietnam

Silvie et al. 1989; Silvie 1991
Silvie et al. 1989; Silvie 1991
Ferino et al. 1982a

4.2

Country

HYMENOPTERA

Apanteles anomidis

Apanteles spp.

Apanteles syleptae
Cotesia (= Apanteles) ruficrus

India
Philippines

Maheswariah & Puttarudriah 1956; Sohi1964;
Ferino et al. 1982a
Silvie et al. 1989; Silvie 1991
Woo & Hsiang 1939
Lever 1943
Ferino et al. 1982a

23

Chad
China
Fiji
Philippines

Xie 1984; Xiong et al. 1994;
van Lam 1996

Anomis flava

BRACONIDAE
Aleiodes aligharensi
Aleiodes sp.

Table 4.2.2 (contÕd) Natural enemies of Anomis flava

Brachymeria nr aliberti
Brachymeria lasus (= B. obscurata)

Brachymeria madecassa
Brachymeria multicolor
Brachymeria paolii
Brachymeria sp.
Brachymeria tibialis
EULOPHIDAE
Euplectrus manilae
Tetrastichus howardi (= T. ayyari)

Reference

Tanzania
China
Nepal
Chad
Chad
Chad
China

Robertson 1973
Chu 1934; Xie 1984
Neupane 1977
Silvie et al. 1989
Silvie et al. 1989
Silvie et al. 1989
He & Chen 1993

Chad

Silvie et al. 1989

China
Philippines
Vietnam
Mauritius
Madagascar
Tanzania
Australia
Madagascar

Chu & Hsia 1935; Woo & Hsiang 1939
Ferino et al. 1982a
van Lam 1996
Vaissayre 1977
Steffan 1958
Robertson 1973
Kay & Brown 1991
Steffan 1958

Philippines

Ferino et al. 1982a; Otanes & Butac 1935;
Otanes 1935
Maheswariah & Puttarudriah 1956, Sohi 1964

India

Biological Control of Insect Pests: Southeast Asian Prospects

BRACONIDAE (contÕd)
Disophrys lutea
Meteorus pulchricornis (= M. japonicus)
Meteorus sp. nr fragilis
Nyereria sp.
Parapanteles sp.
Protomicroplitis sp.
Sigalphus nigripes
CHALCIDIDAE

Country

24

Species
HYMENOPTERA

Table 4.2.2 (contÕd) Natural enemies of Anomis flava
Species
HYMENOPTERA

Philippines
Philippines

Ferino et al. 1982a
Ferino et al. 1982a,b

China
Senegal

Xie 1984
Risbec 1950

Australia

Enicospilus sp.

Chad
Tanzania

Kay & Brown 1991
Kay & Brown 1991
Silvie et al. 1989; Silvie 1991
Robertson 1973

Mesochorus sp.

China

Xie 1984

Metopius sp.
Xanthopimpla punctata
Zacharops narangae
TRICHOGRAMMATIDAE
Trichogramma chilonis
Trichogramma dendrolimi
Trichogramma minutum

Vietnam

van Lam 1996

China
China

Woo & Hsiang 1939
Chu 1934; Woo & Hsiang 1939

Vietnam
China
India
Philippines
Vietnam
Australia

Nguyen & Nguyen 1982
Wang et al. 1985, 1988
Maheswariah & Puttarudriah 1956; Sohi 1964
Otanes & Butac 1935
Nguyen & Nguyen 1982
Twine & Lloyd 1982

Mali
Philippines

Pierrard 1970
Ferino et al. 1982b

EUMENIDAE
Delta (= Eumenes) pyriforme
Eumenes campaniformis
ICHNEUMONIDAE
Charops bicolor
Charops sp.
Echthromorpha agrestoria
Enicospilus ?samoana
Enicospilus dolosus

Trichogramma japonicum
Trichogramma sp.
sp.
spp.

Anomis flava

Reference

4.2

Country

25

Table 4.2.2 (contÕd) Natural enemies of Anomis flava

VESPIDAE
Polistes jokahamae
Polistes sp.

Country

Reference

China
China

Anon. 1976a
Anon. 1976a

Australia
Cameroun

Twine & Lloyd 1982
Deguine 1991

China

Wu et al. 1981

China
China
Philippines
Philippines

Wu et al. 1981
Wu et al. 1981
Ferino et al. 1982a
Ferino et al. 1982a

India
Chad

Mundiwale et al. 1978
Silvie 1991

China

Yin et al. 1991

China
Australia
Cameroun
China
Mali
Vietnam

Yin et al. 1991
Bishop et al. 1978
Delattre 1973
Liang et al. 1981
Atger & Chevalet 1975
van Cam et al. 1996

India

Khan 1956

26

Species
HYMENOPTERA

COLEOPTERA

ARACHNIDA
Erigonidium graminicolum
Misumenops tricuspidatus
sp. (Oxyopidae)
sp. (Thomisidae)

NEMATODA
MERMITHIDAE
not specified

BACTERIA
Bacillus thuringiensis wuhanensis

VIRUSES
Granulosis
Polyhedrosis

AVES
Acridotheres tristis

Biological Control of Insect Pests: Southeast Asian Prospects

CARABIDAE
Calosoma schayeri
Lissauchenius venator
COCCINELLIDAE
Coccinella septempunctata

4.2

Anomis flava

27

Attempts at classical biological control
There appear to have been only two attempts (Table 4.2.3). The pentatomid
bug Podisus maculiventris, a general predator of lepidopterous larvae, was
introduced from USA (where A. flava does not occur) and liberated in Anhui
Province, China in 1984. However, it failed to become established, possibly
due to adverse climatic conditions (Wang and Gong 1987). Trichogramma
minutum from USA was established, in the Philippines in 1934, but its
impact is not recorded (Otanes and Butac 1935).
Table 4.2.3

Attempts at biological control of Anomis flava

Species
HEMIPTERA
PENTATOMIDAE
Podisus maculiventris

From

To

Year

Result

Reference

USA

China

1984

Ð

Wang &
Gong 1987

Philippines 1934

+

Otanes &
Butac 1935

HYMENOPTERA
TRICHOGRAMMATIDAE
Trichogramma minutum USA

AUSTRALIA
Regular releases of Trichogramma nr praetiosum at the rate of 50000 adults/
ha were made from November to March on 8 ha of cotton in south eastern
Queensland. The resulting mean rate of egg parasitisation (49.4%) was
inadequate to control damage by Helicoverpa spp. and the few eggs of
A. flava collected were not parasitised, although high levels of parasitisation
had been reported following the release of the same Trichogramma species
in northern Western Australia (Twine and Lloyd 1982). Good control on
cotton in northern New South Wales was obtained with a mixture of Bacillus
thuringiensis and chlordimeform at a time at which, except for coccinellids,
natural enemies were scarce, although low numbers of spiders and of the
pentatomid predator Oechallia schellembergii were present (Wilson 1981).
A. flava is one of two major pests of kenaf in northern Queensland and
the Ord Irrigation Area of Western Australia, although natural enemies can
produce valuable control (Kay and Brown 1991). The tachinids Carcelia
cosmophilae, C. illota and Exorista sorbillans attack larvae of A. flava and
other noctuids. Larvae are also attacked by the predator Cermatulus nasalis
(Pentatomidae) and the parasitoids Brachymeria sp. (Chalcididae),
Echthromorpha agrestoria and Enicospilus ?samoana (both Ichneumonidae) (Curran 1938; Kay and Brown 1991).

28

Biological Control of Insect Pests: Southeast Asian Prospects

CHAD
Eleven species of parasitoid, 3 species of hyperparasitoid and nematodes
were reared from A. flava larvae on cotton (Silvie et al. 1989; Silvie 1991).
Total parasitisation never exceeded 25% and, in 1987, 15.7% of 485 A. flava
larvae were parasitised. Details are shown in Table 4.2.4. The commonest
parasitoid was Aleiodes aligharensi which, together with Aleiodes sp.
accounted for nearly a third of all larvae parasitised. Three hyperparasitoids
were recorded, about half emerging from species of Aleiodes. The most
abundant was Mesochorus (= Stictopisthus) africanus (Ichneumonidae)
followed by Nesolynx phaeosoma (Eulophidae) and Eurytoma syleptae
(Eurytomidae). All three species were also reared from parasitised larvae of
other host species (Silvie et al. 1989; Silvie 1991).
Table 4.2.4

Natural enemies of A. flava larvae on cotton in Chad

Species

% of total larvae Other hosts
parasitised

Primary parasitoids

DIPTERA
TACHINIDAE
Winthemia dasyops

15.8

Chrysodeixis acuta

32.9

Earias sp.
Helicoverpa armigera
Syllepte derogata
Syllepte derogata

HYMENOPTERA
BRACONIDAE
Aleiodes aligharensi
Aleiodes sp.
Apanteles syleptae
Nyereria sp.
Parapanteles sp.
Protomicroplitis sp.
CHALCIDIDAE
Brachymeria nr aliberti
ICHNEUMONIDAE
Enicospilus dolosus

NEMATODA
Hyperparasitoids
ICHNEUMONIDAE
Mesochorus (= Stictopisthus) africanus
Dead parasitoids

1.3
1.3
5.3
3.9
1.3
9.2
1.3

4.0
23.7

4.2

Anomis flava

29

CHINA
Since 1970 the cultivation of bluish dogbane (Apocynum venotum) has
increased greatly in Zhejiang Province, where A. flava is its most important
pest and 43.7% of semilooper larvae were parasitised. There were two
braconids, Apanteles anomidis (27.5% parasitisation) and Meteorus
pulchricornis (4.9%); two ichneumonids, Charops bicolor (10 to 15%) and
Mesochorus sp. (2.4%); and an unidentified species (0.54%). Mesochorus
sp. acted as a hyperparasitoid of Apanteles anomidis, but itself parasitised
about 1% of A. flava larvae (Xie 1984).
Trichogramma chilonis was reared from the eggs of A. flava on cotton in
Shanxi (Huo et al. 1988). Inoculative releases of T. dendrolimi in vegetable
gardens adjacent to cotton fields infested with A. flava resulted in 61 to 81%
parasitisation of its eggs. By comparison, in pesticide-treated fields nearby,
parasitisation ranged from 2.5 to 30%. Inundative releases directly in cotton
fields led to 30 to 80% parasitisation and no additional control measures
were required (Wang et al. 1985, 1988).
Polistes jokahamae and Polistes sp. were observed in Hunan Province
preying on A. flava, the late instar larvae being preferred (Anon. 1976a).
In Hubei Province, the earwig predator Euborellia pallipes was reported
to reduce A. flava larval populations by 38 to 65% (Yang 1985a).
INDIA
Although A. flava is generally a minor pest, serious outbreaks occur
sporadically. In Hyderabad State more than 1.5 million acres of cotton were
affected in one outbreak, with up to 30 larvae per plant consuming
everything except branches and bolls. Large numbers of the common mynah
were reported eating the larvae (Khan 1956). In Mysore 70% of A. flava
larvae on cotton in the field were parasitised by tachinid flies and Apanteles
spp. In the laboratory, eggs were attacked by Trichogramma minutum and
pupae by Tetrastichus howardi (Maheswariah and Puttarudiah 1956).
MADAGASCAR
The non-specific Brachymeria multicolor was recorded as producing more
than 95% parasitisation of A. flava larvae on cotton (Steffan 1958; Delattre
1973). B. madecassa was also credited with 50 to 90% parasitisation of
larvae in 1956 and 1957 (Vaissayre 1977).
NEPAL
The most important parasitoid of A. flava larvae, Meteorus sp. nr fragilis
(Braconidae), was responsible for 50 and 69.4% parasitisation in 1973 and
1974 respectively. There were no pupal parasitoids (Neupane 1977).

30

Biological Control of Insect Pests: Southeast Asian Prospects

PHILIPPINES
High temperatures inhibited and moderate rainfall favoured high
populations of A. flava on seed cotton, yield being significantly reduced only
at densities of 6 to 8 larvae or greater per plant or at damage rates involving
at least 60% defoliation. Ten species of natural enemies were recorded, the
most important being 2 Trichogramma egg parasitoids, a eulophid larval
parasitoid, a larval and pupal predator (Delta (= Eumenes) pyriforme) and a
pupal parasitoid (Brachymeria lasus). Larval disappearance was attributed
to predators, including Eumenes campaniformis and 2 species of spiders.
Egg and pupal parasitisation were generally high during the wet season,
whereas larval and pupal predation were higher in the dry season. The major
mortality occurred during the larval stage, followed by pupal mortality, with
egg mortality being least important. Larval disappearance, suspected to be
due to predation, was more important than parasitisation (Ferino et al.
1982a,b).
TAIWAN
A. flava larvae feed on the leaves and buds of kenaf and heavy infestation
reduces top growth. There are 3 generations a year, of which the 3rd occurs
in July and is the most injurious. In Taiwan the main hosts are cotton and
kenaf, although other Malvaceae are attacked (Yu and Tu 1969). The
biology of Eucanthecona furcellata, a pentatomid predator of A. flava
larvae, was studied by Chu and Chu (1975).
TANZANIA
Four species of parasitoid were reared from A. flava larvae collected from
cotton and kenaf. In 1963, 7% and, in 1964, 13.8% of larvae were
parasitised. The species involved were the tachinid fly Palexorista
quadrizonula, which produced 1 to 5 puparia from each parasitised larva and
had an average pupal period of 8 days; the ichneumonid Enicospilus sp.
producing 1 pupa, with an average pupal period of 13 days; and, of lesser
importance, the braconid Disophrys lutea (1 pupa, 5 days) and the chalcid
Brachymeria paolii (1 pupa, 11 days). Palexorista quadrizonula was also
reared from Spodoptera exigua, S. littoralis and Xanthodes graellsii (all
Noctuidae); Enicospilus sp. from Helicoverpa armigera; and Disophrys
lutea from Earias biplaga, Spodoptera exigua and S. littoralis (Robertson
1973).
VIETNAM
Control of A. flava is particularly good in some years due to two naturally
occurring egg parasitoids, Trichogramma chilonis and T. japonicum, 93%
parasitisation of eggs being reported (Nguyen and Nguyen 1982; Nguyen
1986).

4.2

Anomis flava

31

Major natural enemies
Apanteles anomidis Hym.: Braconidae
A. anomidis is an important endoparasite of A. flava in China. It has one
generation a year. A mated female lays an average of 109 eggs and prefers to
lay in 1st to 3rd instar host larvae. Adults fed on 10% aqueous sugar solution
lived about 1.5 days at 29¡C (Xiong et al. 1994). An average of 13.7 pupae of
A. anomidis were obtained from each parasitised A. flava larva (Xie 1984).

Palexorista quadrizonula Dip.: Tachinidae
This parasitoid was the most important of 4 species attacking A. flava in
Tanzania. It is widespread in Africa south of the Sahara and occurs also in
the Seychelles and St Helena. It attacks a range of lepidopterous larvae,
especially species belonging to the Noctuidae, but also to the Arctiidae,
Geometridae, Pyralidae and Tortricidae. In A. flava it produces 1 to 5
puparia from each larva, with an average developmental period of 7.9 days
(Crosskey 1970; Robertson 1973).

Discussion
Many natural enemies of A. flava have been reported, although there have
been few studies detailed enough to indicate their true effectiveness. Most of
the parasitoids are unlikely to be specific to A. flava, but to attack also other
lepidopterous larvae feeding on the same host plants. Most of these other
hosts are themselves pest species, whose abundance it is desirable to lower.
Specificity in these circumstances is rather to lepidopterous larvae in a
particular habitat and the parasitoids may thus be sufficiently restricted in
their attack on non-target species to be seriously considered as agents for
classical biological control. Indeed, for a sporadic pest such as A. flava, it is
highly desirable that there should be readily available a reservoir of natural
enemies present continuously, so as to be in place when populations of
A. flava start to increase.
The reasons for sporadic outbreaks have not been identified, although
Brader (1966) suggested that it might well be due to the application of
insecticides resulting in the death of natural enemies.

Table 3

Aggregated ratings of the major invertebrate pests of agriculture in the region.

Order

No.
of +s

1.
2.
3.
4.
5.
6.

41
35
34
32
31
30

Pest and
+ scores

No. times
in top 10

Dossier
available?

Any biological
control successes?

Attractiveness
as a target

13
4
4
6
7
9

+
+
+
+
+
+

+
+

+

+

+
++

+++

++++

4
4
8
4
4
4
2

+
+
+
+
+
+
+


+
+
+

+


+
++
++++
+
+
++


3
3

+
+

+


++
+

1

+





5
4
3
3

+
+
+
+

+
+

+

+++
++++
++++
++++

2
2
5
4

+

+
+

+
+



+++
+++
+



3
2
3

+


+

+


+

++


++++

3

(+)a





1



?

30 and over
Bactrocera spp.
Cosmopolites sordidus
Spodoptera litura
Aphis gossypii
Cylas formicarius
Plutella xylostella

25–29
7. =
7. =
9.
10.
11.
12.
13.

29
29
27
27
26
25
25

Crocidolomia pavonana
Liriomyza spp.
Othreis fullonia
Helicoverpa armigera
Pentalonia nigronervosa
Epilachna spp.
Aulacophora spp.

20–24
14. =
14. =

24
24

16.

24

17.
18.
19.
20.

22
22
21
20

Nacoleia octasema
Maruca vittrata
Polyphagotarsonemus
latus
Agonoxena argaula
Brontispa longissima
Tarophagus proserpina
Aleurodicus dispersus

15–19
21. =
21. =
23.
24.

18
18
17
17

25.
26.
27.
28.

17
16
16
15

29.

15

Phyllocnistis citrella
Unaspis citri
Papuana spp.
Adoretus versutus
Dysmicoccus brevipes
Euscepes postfasciatus
Halticus tibialis
Oryctes rhinocerus
Thrips palmi

30.

15

Coccus viridis

aWalker 1993.

26

D.F. Waterhouse

++
(cont’d over)

Table 3 (cont’d) Aggregated ratings of the major invertebrate pests of agriculture in the region.
Order

No.
of +s

Pest and
+ scores

No. times
in top 10

Dossier
available?

Any biological
control successes?

Attractiveness
as a target

2



2
2
2
1
1


+

+
+
+
+


+


+


+
+
+


+


++++


++++
++++
+++
+

++


3

+

+

1

(+)b


+

+++










+



++


3

(+)b

+

+

10–14
31.
32.
32. =
32. =
35.
36. =
36. =
38.
39.
40.

14
14
14
14
13
12
12
12
11
11

41.

10

42.
43. =
43. =
43. =

10
10
10
10

46.

9

Achatina fulica
Phyllocoptrupa oleivora
Hellula spp.
Nezara viridula
Aspidiotus destructor
Graeffea crouanii
Planococcus pacificus
Earias vittella
Aphis craccivora
Tetranycus lambi
Bemisia tabaci
Ceroplastes rubens
Hippotion celerio
Rhabdoscelus obscurus
Tetranycus marianae
Still invading
Bemisia argentifolii

bDe Barro 1995.

The Major Invertebrate Pests and Weeds of Agriculture and Plantation Forestry in the Southern and Western Pacific

27

45

4.4

Aphis gossypii

China

+++

India

Taiwan

++

Myanmar
20°

++

Laos

20°

+

+++

Thailand

Philippines

+++

Cambodia

++

Vietnam

++

++

+

Brunei

Malaysia


+



Singapore

Papua
New Guinea

++

Indonesia

+

20°

Australia

The comments under the map of Aphis craccivora apply also to A. gossypii.

20°

46

Biological Control of Insect Pests: Southeast Asian Prospects

4.4 Aphis gossypii Glover
Hemiptera: Aphididae
cotton aphid, melon aphid

Rating
Southeast Asia
19

+++
++
+

Thai, Phil
Myan, Camb, Viet,
Msia, Indo
Laos, Sing, Brun

P

China

Southern and Western Pacific

+++
32

+++
++
+
P

Fiji, Guam, Tong, Van
Cook Is, FSM, Fr P, Kiri,
Niue, Sam, Tuv
N Cal, PNG, A Sam, Sol
Is, Tok, W & F
Tuv, Van

Origin
Unclear. Starù (1967a) suggests Ôprobably steppe areas of the Palaearctic
regionÕ, possibly inferring southeastern Europe and adjoining regions. The
taxonomic status of A. gossypii is complex and there are a number of
biotypes.

Distribution
A. gossypii is now very widespread throughout warm temperate, subtropical
and tropical regions of the world.

Biology
The cotton aphid varies greatly in colour, usually from light green or dark
green to almost black but, for older, overcrowded larvae (nymphs) and at
high temperatures it is yellow to almost white and the aphids are smaller than
on young growth. Wingless females (apterae) vary from 0.9 to 1.8 mm in
length and winged females (alatae) 1.1 to 1.8 mm.
In Europe, there is no sexual reproduction, but there is in East Africa,
USA, China and Japan. However, in Japan, there are also parthenogenetic
overwintering populations (Komazaki 1993). The young generally moult 4
times (range 3 to 5). Their rate of development is influenced by the host
plant, cotton being superior to squash. On cotton and squash it takes an
average of 4.5 and 6.7 days respectively to the adult stage at about 27¡C:
there is then a period of about 2 days before nymphs are produced. In this
series of experiments females on cotton produced an average of 27 nymphs
(range 9 to 43), whereas those on squash produced an average of 14 (range 2

4.4

Aphis gossypii

47

to 35) (Khalifa and Sharaf 1964). Life history data on cucumber is provided
by van Steenis and El Khawass (1995).
In U.K., apterae lived 16 days and each produced about 40 offspring. In
founding colonies without competition, the 40 progeny could be produced in
about 7 days and the total population increased about 10 fold each
subsequent week. The rate was reduced as crowding occurred and only then
was it possible for the rate of parasitoid increase to exceed that of the aphid
(Hussey and Bravenboer 1971).

Host plants
A. gossypii is widely polyphagous. Cotton, in particular, can carry very
heavy infestations, as also can various cucurbits (e.g. cucumber, squash,
watermelon). In many parts of the world it is one of the most serious of the
aphids on citrus. A. gossypii also infests beans, egg plant, guava, mango,
okra, paprika, potato, taro and numerous ornamentals. In Central and South
America it also damages coffee and cocoa.

Damage
As its common and scientific names imply, cotton can be seriously damaged
by A. gossypii. It can be a major problem and even cause death of the plant at
early stages of growth; and a further serious attack may occur when the plant
is near maturation and copious production of honeydew can contaminate the
cotton lint.
On all of its many hosts, severely attacked leaves curl and young growth
is stunted. As populations build up, the upper surface of leaves and fruit
becomes contaminated with honeydew, leading to growth of sooty moulds,
which is unsightly and interferes with photosynthesis.
For many crops, virus transmission is far more important than direct
damage, since even small numbers of migrating aphids can cause serious
problems, whereas even large colonies may cause only moderate leaf
deformation (Barbagallo and Patti 1983). Although, formerly, it was not an
effective vector of citrus tristeza virus, it has now become a dangerous one in
USA and Israel. Both adults and nymphs can transmit the virus (Komazaki
1993). A. gossypii is also an important vector of a very wide range of other
plant viruses.

48

Biological Control of Insect Pests: Southeast Asian Prospects

Natural enemies
Two groups of hymenopterous parasitoids attack (but are restricted to)
aphids, a larger one consisting of species belonging to the family Aphidiidae
and a smaller group belonging to the family Aphelinidae. Both groups occur
worldwide as solitary endoparasitoids. Although many of the species are
recorded as having an extensive host range, there is almost always a
significant degree of host restriction. Hosts are frequently some (but not all)
of the species in a particular aphid genus or several closely related genera.
There is good evidence that there are biotypes within some parasitoid
species, since populations from some hosts or some areas parasitise a
narrower range of hosts than the species as a whole. There may also be
differences between biotypes in their preference for the host aphid when
feeding on a particular host plant or in a particular habitat. When a parasitoid
is abundant on a preferred host it may occasionally attack a nearby nonpreferred host, as with Diaeretiella rapae, a major parasitoid of the cabbage
aphid Brevicoryne brassicae, which has occasionally been recorded from
both A. craccivora and A. gossypii, but for which it exhibits a low preference
(Dhiman et al. 1983). There are some species (or biotypes of species) that
have been found capable of generally causing high levels of parasitisation of
A. craccivora. Those selected by Starù (1967a, b) are shown in bold italics in
table 4.4.1 and might be considered first as potential species for biological
control introductions to areas where they do not already occur. Valuable
reviews of the effectiveness of aphid parasitoids are provided by Carver
(1989), Hagen and van den Bosch (1968) and Hughes (1989).
Although many coccinellids, syrphids, chrysopids, hemerobiids and a
few predator species from other insect families attack aphids, their impact in
regulating populations is generally regarded as disappointing, although they
must certainly at times limit economic damage. The efficiency of a predator
depends upon its searching ability and effectiveness in capturing prey. The
numbers of predators seem to be greatest when aphid numbers are already
declining after a peak in abundance and, thus, their apparently great impact
at that time may actually have little significance in population regulation.
Predators can increase rapidly in numbers only after their prey has become
sufficiently abundant, so there is an important time lag between prey and
predator numbers (Hemptinne and Dixon 1991).
Coccinellids have been used successfully for the biological control of
several, relatively sessile, coccid pests, whereas results have generally been
poor against aphids. One of the reasons is that adult coccinellids and their
larvae are poor at capturing other than first instar aphids (Dixon 1989).
Indeed, the survival of newly-hatched beetle larvae is very dependent upon

4.4

Aphis gossypii

49

the abundance of young aphids, so there is a need for coccinellids to lay eggs
very early in the development of aphid colonies. Oviposition late in aphid
population development may result in older larvae starving from lack of
food and the comparatively poor searching ability of coccinellids for low
aphid populations aggravates the situation (Hemptinne and Dixon 1991).
Another reason is that coccinellids disperse when prey populations fall to
low levels.
Adults of most aphidophagous syrphids are attracted to, and lay their
eggs in or close to, large aphid colonies, the number of eggs deposited
increasing as aphid density increases (Chandler 1967). Syrphid larvae also
generally become abundant when the aphid colony is already declining. The
larvae of the aphidophagous cecidomyiid Aphidoletes aphidimyza appear to
have adequate host specificity to be acceptable for biological control
introductions. The species has a high degree of density dependence, kills
more aphids than it consumes and is less affected than many other predators
by insecticides (Meadow et al. 1985).
Chrysopids and hemerobiids are more effective than many other
predators at capturing prey and are likely to be more efficient predators at
low aphid densities.
A particular problem with most predators is that they are highly
polyphagous. They will almost always attack a very wide range of nontarget insects, some of which are likely to be of environmental concern.
Regulatory authorities responsible for approving import permits to a country
are becoming increasingly reluctant to do so, unless an adequate degree of
specificity has been demonstrated and this is occasionally possible.
For the above reasons, no attempt has been made to assemble lists of the
many generalist predators recorded as attacking (or probably attacking)
A. craccivora or A. gossypii in the field, although a few facts about their
activities are recorded in the segments dealing with individual countries in
order to provide an entry into the literature. Abstracts of many additional
papers are available in CABIÕs Review of Agricultural Entomology and its
predecessor Review of Applied Entomology, Series A. The major
parasitoids of A. gossypii are listed in Table 4.4.1.

50

Table 4.4.1

Parasitoids of Aphis gossypii
Country

Reference

China
Guam
India
Shanghai
Italy
Italy
Australia
Cook Is
Hawaii
India
Japan
Tonga

Shi 1980
Fulmek 1956
Ramaseshiah & Dharmadhikari 1969
Shi 1980
Ferrari & Nicoli 1994
Ferrari & Nicoli 1994
Carver et al. 1993
Walker & Deitz 1979
Timberlake 1924; Yoshimoto 1965
Bhat 1987
Takada & Tokomaku 1996
Carver et al. 1993;
Stechmann & Všlkl 1988
M. Carver pers. comm.
Shi 1985
Ramaseshiah & Dharmadhikari 1969
Risbec 1951; Fulmek 1956
Shi 1980
Takada 1992
Bennett 1985
Zehavi & Rosen 1988
Hartley 1922; Spencer 1926;
Oatman et al. 1983b; Trumble & Oatman 1984
Fulmek 1956
Wharton 1983

HYMENOPTERA
APHELINIDAE
Aphelinus abdominalis
(= Aphelinus sp. nr flavipes)

Aphelinus humilis
Aphelinus mali

Aphelinus paramali
Aphelinus semiflavus
Aphelinus varipes (= A. nigritus)

Australia
China
India
Senegal
Shanghai
Taiwan
Trinidad
Israel
USA
Transcaucusus
USA

Biological Control of Insect Pests: Southeast Asian Prospects

(= Aphelinus flavipes)
Aphelinus asychis
Aphelinus chaoniae
Aphelinus gossypii (= Aphelinus kashmiriensis)

Table 4.4.1 (contÕd) Parasitoids of Aphis gossypii
Country

Reference

Colombia
India
Japan

Ramirez & Zuluaga 1995
Ramaseshiah & Dharmadhikari 1969
Takada 1992

Angola
Argentina
Australia
Chile
China
Egypt
India
Japan
Kenya
Mozambique
Pakistan
RŽunion
Tonga
Uruguay
Venezuela
Morocco
Uzbekistan
USA, West Indies

Starù & van Harten 1972
Starù 1967a, 1972
Carver & Starù 1974; Room & Wardhaugh 1977
Prado 1991, Starù 1975
Xi & Zhu 1984
Selim et al. 1987
Starù 1972; Agarwala et al. 1981
Starù 1967a
Starù & Schmutterer 1973
Starù & van Harten 1972
Starù 1975
Starù 1975
Carver et al. 1993
Starù 1975
Cermeli 1989
Fulmek 1956
Starù 1979
Starù 1967a,b

HYMENOPTERA
APHELINIDAE (contÕd)
Aphelinus sp.
2 ´ spp.
APHIDIIDAE
*Aphidius colemani

Aphis gossypii

Aphidius floridaensis

4.4

Aphidius ervi

51

52

Table 4.4.1 (contÕd) Parasitoids of Aphis gossypii
Country

Reference

China
Hawaii
India
Japan

Shi 1980; Takada 1992
Mackauer & Starù 1967; Takada 1968
Raychaudhuri 1990
Mackauer & Starù 1967;
Takada 1968, 1992
Mackauer & Starù 1967; Takada 1992
Mackauer & Starù 1967
Bšrner et al. 1957
Starù 1967a
Starù 1967a
Prado 1991
Mackauer 1962b
Agarwala et al. 1981; Agarwala 1983
Starù 1976
Tremblay et al. 1985
Starù & Ghosh 1983
Starù 1967a
Halima-Kamel 1993
Starù 1967a
Bšrner et al. 1957
Li & Wen 1988; Xi & Zhu 1984
Agarwala et al. 1981
Bšrner et al. 1957
Raychaudhuri 1990; Takada 1992

HYMENOPTERA
APHIDIIDAE (contÕd)
*Aphidius gifuensis

Aphidius urticae (= Aphidius lonicerae)
Aphidius matricariae (= Aphidius phorodontis)

Aphidius picipes
Aphidius similis
Aphidius sonchi
Aphidius uzbekistanicus

Brazil
Canada
Chile
Germany
India
Italy
Lebanon
Pakistan
Peru
Tunisia
USA
China
India
India

Biological Control of Insect Pests: Southeast Asian Prospects

Korea
Taiwan

Table 4.4.1 (contÕd) Parasitoids of Aphis gossypii
Country

Reference

India

Agarwala et al. 1981

India
India, Japan
Tunisia
USA
Uzbekistan
China, Japan, Europe

Raychaudhuri 1990; Takada 1992
Agarwala et al. 1981; Takada 1992
Halima-Kamel 1993
Starù 1967a
Starù 1979
Takada 1968, 1992

India
Iraq
Korea
Lebanon
Taiwan
USA
USSR
India
Uzbekistan
Japan,
Korea, Taiwan
USSR
China
Europe
Hong Kong
India
Japan
Lebanon
Shanghai
Taiwan

Agarwala et al. 1981, Takada 1992
Al-Azawi 1970
Takada 1972b; Chou 1981; Paik 1975
Tremblay et al. 1985
Chou 1981b
Schlinger & Hall 1960
Starù 1970
Raychaudhuri 1990
Starù 1979
Takada 1992
Paik 1975; Chou 1981b
Starù 1970
Shi 1980; Xi & Zhu 1984; Takada 1992,
Starù 1970
Takada 1992
Raychaudhuri 1990
Takada 1992
Tremblay et al. 1985
Shi 1980
Chou 1981b, Takada 1992

HYMENOPTERA
APHIDIIDAE (contÕd)
Aphidius spp.
Cristicaudus nepalensis
Diaeretiella rapae

Ephedrus nacheri
*Ephedrus persicae

Aphis gossypii

*Lipolexis gracilis

4.4

Ephedrus plagiator

53

54

Table 4.4.1 (contÕd) Parasitoids of Aphis gossypii
Country

Reference

Hong Kong
India

Takada 1992
Starù & Ghosh 1975; Agarwala et al. 1981; Pramanik &
Raychaudhuri 1984; Raychaudhuri 1990; Takada 1992
Ng & Starù 1986; Takada 1992;
V.J. Calilung pers. comm. 1995
Starù & Zelenù 1983
Raychaudhuri 1990
Takada 1968, 1992; Paik 1975; Chou 1981; Tian et al.
1981; Xi & Zhu 1984
Starù & Zelenù 1983; Takada 1992
Starù et al. 1975; Starù 1976

HYMENOPTERA
APHIDIIDAE (contÕd)
Lipolexis scutellaris (= Lipolexis pseudoscutellaris)

Lysiphlebia mirzai
*Lysiphlebus fabarum
(= Lysiphlebus ambiguus
= Lysiphlebus cardui
= Lysiphlebus confusus)

Lysiphlebus shaanxiensis

Selim et al. 1987
Starù 1970
Santas 1978
Al-Azawi 1966
Takada 1992
Tremblay et al. 1985
Starù 1967a
Hamid et al. 1977
Halima-Kamel 1993
Starù 1967a
Starù 1967a; Lyashova 1992
Starù 1979
Chou & Xiang 1982

Biological Control of Insect Pests: Southeast Asian Prospects

Lysaphidus schimitscheki
*Lysiphlebia japonica

Malaysia
Philippines
Vietnam
India
China, Japan
Korea, Taiwan
Vietnam
Algeria, Bulgaria, Corsica,
Israel, Italy
Egypt
Europe
Greece
Iraq
Japan
Lebanon
Morocco
Pakistan
Tunisia
USA
USSR
Uzbekistan
China

Table 4.4.1 (contÕd) Parasitoids of Aphis gossypii
Country

Reference

Chile
Colombia
Cuba
France
Guadeloupe
Haiti
Hawaii
Italy
Mexico
Spain
Portugal
Trinidad
USA
Venezuela
West Indies
Argentina
Colombia
Hawaii
India
Pakistan
Portugal
USA
India

Prado 1991
Fulmek 1956; Vergara & Galeano 1994
Starù 1967b, 1981
Starù et al. 1988a,b
Starù et al. 1987
Fulmek 1956
Starù 1967a
Tremblay & Barbagallo 1982
Starù & Remaudi•re 1982
Starù et al. 1988a,b;
Costa & Starù 1988; Starù et al. 1988c
Bennett 1985
Spencer 1926; Schlinger & Hall 1960; Starù 1970;
Oatman et al. 1983b; Trumble & Oatman 1984
Cermeli 1989
Starù 1967b
Fulmek 1956
Ramirez & Zuluaga 1995
Fulmek 1956
Agarwala et al. 1981
Mohyuddin & Anwar 1972, 1973
Boelpaepe et al. 1992
Fulmek 1956
Raychaudhuri 1990; Takada 1992

India
Uzbekistan

Agarwala et al. 1981
Starù 1979

HYMENOPTERA
APHIDIIDAE (contÕd)
*Lysiphlebus testaceipes

55

Praon exsoletum

Aphis gossypii

Praon abjectum
Praon absinthii

4.4

Lysiphlebus sp.

56

Table 4.4.1 (contÕd) Parasitoids of Aphis gossypii
Country

Reference

India
Lebanon
Tajikistan, Uzbekistan
India
Uzbekistan
India
China
India
Corsica, Greece, Iraq, Italy,
Israel, Morocco
Israel
Lebanon
Tunisia
Iran, Tajikistan, Uzbekistan

Agarwala et al. 1981
Tremblay et al. 1985
Starù 1979
Agarwala et al. 1981
Starù 1979
Raychaudhuri 1990; Takada 1992
Takada 1992,
Agarwala et al. 1981
Starù 1976; Santas 1978
Al-Azawi 1970
Rosen 1967b
Hussein & Kawar 1984; Tremblay et al. 1985
Halima-Kamel 1993
Starù 1979

USSR
Uzbekistan
India
China
Japan, Korea, Taiwan
Philippines
Uzbekistan
India

Fulmek 1956; Mackauer & Starù 1967
Starù 1979
Agarwala et al. 1981; Raychaudhuri 1990; Takada 1992
Shi 1980, 1985
Paik 1976; Chou 1981a; Lu & Lee 1987; Takada 1992
V.J. Calilung pers. comm. 1995
Starù 1979
Samanta et al. 1985; Raychaudhuri 1990

HYMENOPTERA
APHIDIIDAE (contÕd)
Praon myzophagum
Praon volucre

Toxares macrosiphophagum
Trioxys acalephae
Trioxys angelicae

Trioxys asiaticus
Trioxys auctus
Trioxys basicurvus
Trioxys communis

Trioxys complanatus
Trioxys equatus

Biological Control of Insect Pests: Southeast Asian Prospects

Praon sp.

Table 4.4.1 (contÕd) Parasitoids of Aphis gossypii
Country

Reference

China
India
Taiwan
Morocco
China, India
India
Pakistan
Portugal
Taiwan, USA

Tian et al. 1981, Xi & Zhu 1984
Starù & Ghosh 1975; Agarwala et al. 1981; Agarwala
1983,1988; Raychaudhuri 1990; Takada 1992
Chou 1981b, Takada 1992
Fulmek 1956
Shi 1980; Raychaudhuri 1990
Agarwala et al. 1981
Mohyuddin et al. 1972
Bšrner et al. 1957; Boelpaepe et al. 1992
Fulmek 1956

ENCYRTIDAE
Aphidencyrtus sp.

Malaysia

Yunus & Ho 1980

PTEROMALIDAE
Pachyneuron aphidis

China

Shi 1987

Chile, Europe,
Nth America
Trinidad
USA

Harris 1973; Kocourek et al. 1993,
Meadow et al. 1985; Prado 1991
Kirkpatrick 1954
Tang et al. 1994; Yokomi et al. 1994

HYMENOPTERA
APHIDIIDAE (contÕd)
*Trioxys indicus

Trioxys nr pallidus
Trioxys rietscheli
Trioxys rubicola
Trioxys sinensis
Trioxys sp.

Endaphis maculans

Aphis gossypii

CECIDOMYIIDAE
Aphidoletes aphidimyza

4.4

DIPTERA

57

58

Table 4.4.1 (contÕd) Parasitoids of Aphis gossypii
Country

Reference

China

Dong et al. 1992
Xu et al. 1993
Zhang et al. 1993; Zhang & Chen 1993

ACARINA
TROMBIDIIDAE
Allothrombium pulvinum

Biological Control of Insect Pests: Southeast Asian Prospects

*Starù (1967a, 1970) selected these species (bold type) for possible introduction to areas where they do not occur.
Also recorded from Aphis craccivora

4.4

Aphis gossypii

59

Under humid conditions, high aphid mortality may result from fungal
infection. The two species commonly reported are Neozygites fresenii and
Cephalosporium (= Verticillium) lecanii (Table 4.4.2), although about a
dozen species may be involved (Hagen and van den Bosch 1968). Effective
use of the above fungi has been made under glasshouse conditions and
V. lecanii is available commercially for this purpose. However, in Florida
this fungus has performed poorly on A. gossypii compared with against
Myzus persicae (Osborne et al. 1994).

Table 4.4.2

Fungi attacking Aphis gossypii and/or A. craccivora

Arthrobotrys sp.
Beauveria bassiana
Cephalosporium lecanii

Entomophthora exitialis
Entomophthora sp.
Neozygites fresenii

Paecilomyces fumosoroseus

Country

Reference

USA
USSR
Japan
Netherlands
USA

OÕBrien et al. 1993
Pavlyushin & Krasavina 1987
Masuda & Kikuchi 1992;
Saito 1988
Yokomi & Gottwald 1988;
Sopp et al. 1990; Vehrs &
Parrella 1991; Schelt 1993
Cermeli 1989
Pavlyushin & Krasavina 1987
Kranz et al. 1977
Prado 1991
Milner & Holdom 1986
Silvie & Papierok 1991
Zhang 1987
Hernandez & Alvarez 1985
Steinkraus et al. 1991, 1995,
1996; OÕBrien et al. 1993;
Steinkraus & Slaymaker 1994;
Smith & Hardee 1996
Pavlyushin & Krasavina 1987

USSR
Venezuela
India
Chile
Australia
Chad
China
Cuba
USA

USSR

60

Biological Control of Insect Pests: Southeast Asian Prospects

Attempts at biological control
There have been many intentional and unintentional transfers of aphid
parasitoids, which have influenced the populations of A. craccivora and
A. gossypii in different regions of the world. However, the majority of
intentional transfers have been aimed at other target aphid pests. Some
deliberate attempts against these two species have been unsuccessful (Table
4.4.3). Overall, however, there is little doubt that, where parasitoids have
become established, the situation is better, sometimes significantly better,
than if they were not present, even if the level of control may not be as
effective as is desirable. There is little doubt that, in many regions, an
improved situation is likely to occur if additional parasitoid species are
established.
AUSTRALIA
Aphidius colemani is capable of producing rapid decreases in populations of
A. gossypii on cotton and, of carrying this to extinction in association with
high densities of Harmonia octomaculata (= Coccinella arcuata) and
Coccinella transversalis (= C. repanda) (Room and Wardhaugh 1977).
Three species of parasitoid were imported in the hope that, as polyphagous
species, they would contribute to the biological control of several species of
pest aphid. The principal target for two of the species was A. craccivora,
which is very sporadic in occurrence in Australia. It was hoped that, in the
unpredictable absence of A. craccivora, the parasitoids would continue to
breed and survive in other hosts.
Lysiphlebus testaceipes (from Aphis nerii in California) and L. fabarum
(from Greece and Turkey) were imported as biological control agents of
A. craccivora on legumes, mass reared, and released in 1982 and 1983 in
New South Wales and Victoria. Both parasitoids readily parasitised
A. craccivora, A. gossypii and some other aphid species in the laboratory.
The releases coincided with a prolonged drought during which there were no
A. craccivora available on legume crops. Releases were, therefore, made on
A. gossypii infesting Hibiscus bushes. No parasites were recovered the
following year from either A. craccivora or A. gossypii, although
L. testaceipes became established in Aphis nerii on oleander (Nerium)
(Hughes 1989). L. fabarum was not recovered. It was concluded that the
parasitoids must have been unsuitable biotypes (Carver 1984, 1989).

Table 4.4.3

Releases for the biological control (inter alia) of Aphis craccivora and/or A. gossypii
To
California
U.K.
France
Tonga

Lysiphlebus fabarum

France, Italy, Greece,
Turkey
USA
USA
USA

Australia
China
Hawaii
India

USA
Cuba
Czechoslovakia

Australia
France, Italy
Tonga

1982
1973

+
+
-

Hawaii

Pakistan

1972

?

Mexico
USA
India

USSR
China
Australia

1989
1983
1986

+
+
-

Lysiphlebus testaceipes

Trioxys indicus

Year

Result

1982
1990

+
+
+
+

1982,
1983
1983
1923
1966

+
+
?

Reference
Wharton 1983
Hussey & Bravenboer 1971
Rabasse 1986
Carver et al. 1993;
Wellings et al. 1994
Carver 1984, 1989
Zheng & Tang 1989
Beardsley 1961
Ramaseshiah et al. 1969;
Sankaran 1974
Carver 1984; Hughes 1989
Rabasse 1986; Starù et al. 1988a,b
Stechmann & Všlkl 1988; Všlkl et al.
1990
Anwar 1974;
Mohyuddin & Anwar 1972, 1973,
Mohyuddin et al. 1971
Shiiko et al. 1991
Zheng & Tang 1989
Carver 1989; Sandow 1986

Aphis gossypii

From
South Carolina
India
S. Brazil
Australia

4.4

Parasitoid
Aphelinus varipes
Aphelinus abdominalis
Aphidius colemani

61

62

Biological Control of Insect Pests: Southeast Asian Prospects

Praon volucre was imported from the Mediterranean area for the
biological control of Hyperomyzus lactucae, a vector of lettuce necrotic
yellows. It was mass reared and released in 1981 and 1982, mainly in New
South Wales and Victoria. It has not been recovered from mainland
Australia, but is reported to be present in Tasmania. In laboratory trials it
successfully parasitised a number of pest aphids that occur in Australia,
including A. craccivora.
In 1986 Trioxys indicus was introduced from India and released in
Western Australia, Victoria and New South Wales against A. craccivora
(Carver 1989), but establishment did not occur.
Although he gives no further details Mohammad (1979) states that
parasitisation of A. craccivora in Adelaide soon after colonisation
frequently prevented the establishment of a colony.
CHINA
Zhang (1992) recorded for A. gossypii on cotton in China more than 48
species of natural enemy (belonging to 19 families in 9 orders). Coccinellids,
spiders and lacewings were the most important predators of this and other
pests in cotton fields. Nan et al. (1987) record attack on A. gossypii and other
cotton pests by 5 species of pentatomid, 9 species of coccinellid, 4 species of
lacewing and 36 species of spider. The dominant predators studied by Wu
(1986) were found to vary according to the season and included the
coccinellids Coccinella septempunctata, Hippodamia variegata, Propylea
japonica, Harmonia axyridis, the lacewings Chrysopa (= Chrysoperla)
sinica, Chrysopa formosa, C. pallens (= C. septempunctata), C. intima and
the spiders Erigonidium graminicolum, Misumenops tricuspidatus and
Xysticus croceus. Zhang (1985) carried out laboratory tests on the daily
consumption of A. gossypii by Scymnus hoffmanni, Chrysopa sinica and the
spider Erigonidium graminicolum. Ma and Liu (1985) reported on the
effectiveness and seasonal fluctuations of Propylea japonica and Yang
(1985b) on its laboratory rearing. Ding and Chen (1986) examined the
predation pattern of Chrysopa sinica. Propylea japonica, Scymnus
hoffmanni and spiders (especially Theridion octomaculatum and
Erigonidium graminicolum) were major enemies of A. gossypii on cotton in
Hunan Province. The spiders (2.6 to 26 per 100 plants ) were present from
late June to late August and were relatively unaffected by the weather.
Coccinellid populations fluctuated somewhat with the season. Reproduction
of A. gossypii was inhibited and its damage reduced when the ratio of total
natural enemies to aphids was 1:50 or the ratio of coccinellids was 1:140.
Since 1978, cotton fields over large areas have not been treated with
insecticides before August, in order to safeguard the natural enemies which
now hold the aphids in check (Mao and Xia 1983). Zhao et al. (1989) report

4.4

Aphis gossypii

63

that the lycosid spider Pardosa astrigata is an important predator in cotton
fields and Dong (1988) that the coccinellid Harmonia axyridis was an
effective natural enemy when present in adequate numbers. Other predators
include the anthocorid bug Orius minutus (Miao & Sun 1987), the
coccinellids Scymnus hoffmanni (Zhao and Holling 1986), Propylea
japonica and Harmonia axyridis (Zou et al. 1986; Lei et al. 1987 ).
The aphidiid Aphidius picipes (= A. avenae) parasitised more than 80%
of A. gossypii individuals on Chinese cabbage growing near cotton fields (Li
& Wen 1988). Laboratory studies showed that Trioxys communis was more
effective than Aphelinus mali in suppressing A. gossypii populations (Shi
1985). Of the 5 species of parasitoid recorded by Xi and Zhu (1984) on
A. gossypii on cotton in Jiangsu Province, Lysiphlebia japonica and Trioxys
indicus were dominant and each accounts for about 45% of all parasitoids. In
the laboratory, female L. japonica laid an average of 120 eggs and produced
a parasitisation rate of up to 14%. In the field it overwinters as larvae inside
A. gossypii, A. craccivora or Myzus persicae. In an earlier study Tian et al.
(1981) recorded the same two parasitoids on both A. craccivora and
A. gossypii with a combined parasitisation rate of 13%. This did not provide
effective control and it was pointed out there was heavy attack by
hyperparasitoids, such as Aphidencyrtus sp. (Encyrtidae).
Larvae of the mite Allothrombium pulvinum have been observed
attacking A. gossypii in cotton fields (Zhang and Chen 1993; Zhang et al.
1993).
COLOMBIA
Aphelinus sp. caused 2.2% and Lysiphlebus sp. 0.3% parasitisation of
A. gossypii on cotton in the field (Ramirez and Zuluaga 1995).
CUBA
Aphis craccivora is a common pest of vegetables and many other crops and
also occurs on wayside trees, such as Gliricidia. In beans and other annual
crops it occurs for a short period only, whereas on wayside trees it is present
more or less continuously. The native parasitoid Lysiphlebus testaceipes
parasitises the aphid heavily on Gliricidia, but poorly or not at all on young
beans. This appears to be primarily a matter of the relative rates of dispersal
of the aphid and its parasitoid (Starù 1970).
EAST ASIA
A list of parasitoids recorded from A. gossypii in East Asia is shown in table
4.4.1 in which most entries from this region are based on Takada (1992). The
most comprehensive information within this region is available from
Taiwan (Starù and Schlinger 1967; Tao and Chiu 1971; Chou 1984), Japan
(Takada 1968; Takada and Yamauchi 1979; Takada unpublished) and India
(Raychaudhuri 1990). For Southeast Asia, there are two records from

64

Biological Control of Insect Pests: Southeast Asian Prospects

Vietnam and one from Malaysia. In so far as one can argue from such scanty
data, the principal parasitoids of A. gossypii in the Far East (Trioxys
communis, Lysiphlebia japonica and the particular species involved of
Aphelinus) do not occur in India (Takada 1992). According to Takada, the
principal species attacking A. gossypii in India is Trioxys indicus, which is
recorded from Taiwan, but apparently not from Japan. Another species
attacking A. gossypii in India is Lipolexis scutellaris, which also occurs in
Vietnam, Malaysia and Hong Kong, but is not recorded elsewhere in the Far
East (Takada 1992). Two widely distributed and effective parasitoids that
attack A. gossypii in other parts of the world (Aphidius colemani and
Lysiphlebus testaceipes) do not yet seem to be present in Southeast Asia,
although A. colemani is recorded from the field in Pakistan (Starù 1975).
Takada (1992) comments on the habitat specialisations in Japan of
parasitoids of A. gossypii, which occurs in both open and lightly wooded
habitats: Trioxys communis, and Aphelinus species prefer the open habitat,
whereas Lysiphlebia japonica, Ephedrus nacheri, E. persicae and
E. plagiator prefer the lightly-wooded habitat. Thus, the parasitoid complex
on A. gossypii on cucumber, egg plant or taro is quite different from that on
Hibiscus or Rhamnus in a garden.
FRANCE
Starù et al. (1973) reviewed the parasitoids of aphids in France. A South
American strain of Aphidius colemani, which is adapted to warm subtropical
conditions and is highly polyphagous, was introduced from southern Brazil
and released against Toxoptera aurantii in France near Antibes in 1982. It is
reported to be established (Rabasse 1986; Tardieux and Rabasse 1986). In
1973Ð74 Lysiphlebus testaceipes was introduced into France and released
near Antibes and in Corsica. It was recovered soon after, and later in Italy. It
was also sent to eastern Spain where it established and spread to become the
predominant parasitoid in the regions where it occurs. It attacks A. gossypii
on citrus and a number of other aphids on other host plants (Starù et al.
1988a).
INDIA
Including the widespread Trioxys indicus, 14 parasitoids were recorded from
A. gossypii (a preferred host) and 8 from A. craccivora (Agarwala 1983).
Ephedrus persicae is reported to be confined in India to A. craccivora and 3
parasitoids, Praon absinthii, Trioxys basicurvus and T. rubicola confined to
the A. gossypii complex (Agarwala et al. 1981).
The impact of the widespread parasitoid Trioxys indicus on
A. craccivora feeding on pigeon pea was studied in the laboratory and the
field. The parasitoid had a high searching ability and exhibited a density
dependent relationship with its host. A single female oviposited in 100 to
150 aphids in 3 to 5 days after emergence and the life cycle occupied 15 to 20

4.4

Aphis gossypii

65

days. Early in the season 9.4% of the aphids were parasitised, rising to a peak
of 64.6% two months later and resulting in suppression of the aphid
population. Trioxys indicus has a relatively narrow host range, which
includes A. gossypii, A. craccivora and the oleander aphid A. nerii. Up to
2.4% of the parasitoids were hyperparasitised by a cynipoid wasp. Singh and
Sinha (1983) concluded from these studies that T. indicus had most of the
necessary attributes of a potentially effective biological control agent for
A. craccivora and A. gossypii.
Ramaseshiah and Dharmadhikari (1969) found Aphelinus abdominalis
(= A. flavipes) to be one of the important parasitoids of A. gossypii in India;
furthermore, that Aphelinus sp. nr abdominalis had A. craccivora as a
preferred host, but also attacked A. gossypii.
Many generalist predators attack A. gossypii and other aphids in India,
and Agarwala and Saha (1986) record 8 species attacking it there on cotton.
Seven species of predatory coccinellid, 2 syrphids and a chrysopid were
recorded preying on A. gossypii on potatoes. Coccinella septempunctata and
Cheilomenes (= Menochilus) sexmaculata were the most important (Raj
1989). A. gossypii was reported to be controlled on sunflower by
coccinellids (Goel and Kumar 1990). The aphidophaghous coccinellid
Micraspis discolor showed a preference for A. craccivora (Agarwala et al.
1988).
The biology of the predatory Leucopis species (Diptera) attacking both
A. craccivora and A. gossypii on chrysanthemums is described by Kumar et
al. (1988). Larvae of Chrysopa orestes had a substantial effect on A. gossypii
on eggplant (Bhagat and Masoodi 1986).
Raychaudhuri et al. (1979) record three predatory spiders: Cyclosa
insulana (Araneidae) attacking A. craccivora and A. gossypii; Theridion sp.
(Theridiidae) attacking A. craccivora; and Uloborus sp. (Uloboridae)
attacking A. gossypii.
IRAQ
A. gossypii is parasitised on melons, cotton and okra by Lysiphlebus
fabarum which, in turn, is attacked by the hyperparasitoids Pachyneuron
aphidis (Pteromalidae), Dendrocerus (= Lygocerus) sp. (Megaspilidae),
Aphidencyrtus sp. (Encyrtidae) and Alloxysta (= Charips) sp. (Charipidae)
(Al-Azawi 1966).
ISRAEL
A. gossypii occasionally infests citrus in the vicinity of cotton fields. Based
on small samples, it was found to be attacked by only one parasitoid, Trioxys
angelicae (Rosen 1967a,b).

66

Biological Control of Insect Pests: Southeast Asian Prospects

ITALY
A. gossypii in particular, but also A. craccivora, are two of the 10 aphid
species attacking citrus. Eleven species of aphidiine parasitoids provide a
considerable measure of biological control (Tremblay 1980). Lysiphlebus
testaceipes (particularly) and L. fabarum are the commonest species and
together may attain a parasitisation rate of 90% to 100%.
The most important predators are coccinellids, of which Scymnus spp.
are common amongst colonies of A. gossypii. Together with Coccinella
septempunctata and other natural enemies, they may quickly suppress a
cotton aphid population. Chrysopid, syrphid and cecidomyiid larvae are less
effective although, in the absence of coccinellid larvae, syrphid larvae may
be important. A. gossypii is under biological control on citrus in orchards
where pest management procedures are adopted (Barbagallo and Patti 1983;
Starù 1964). Recent papers on natural enemies of A. gossypii in Italy have
been published by Ferrari and Burgio (1994) and Ferrari & Nicoli (1994).
JAPAN
Amongst numerous predators reported on A. gossypii by many authors are
Coccinella septempunctata (Nozato and Abe 1988) and Scymnus hoffmanni
(Kawauchi 1987).
KOREA
The consumption of A. gossypii by larvae of the coccinellid Harmonia
axyridis was studied by Choi and Kim (1985).
Eight species of parasitoid (and 6 of hyperparasitoid) of A. craccivora
were reported by Chang and Youn (1983). The more important species (and
rates of parasitisation) were Lysiphlebus fabarum (31.6%), Lipolexis
scutellaris (18.8%), Lysiphlebia japonica (16.7%) and Adialytus salicaphis
(11.4%). Of 509 field collected, mummified aphids 44.8% produced
parasitoids and 43.8% hyperparasitoids giving an overall parasitisation rate
of 88.6%.
MALAYSIA
The only record of parasitoids of A. craccivora or A. gossypii appears to be
that of Ng and Starù (1986). Lipolexis scutellaris, an oriental species with a
wide distribution in India and extending to Vietnam, southern China and
Taiwan, was recorded from both aphid hosts. Trioxys communis, also an
oriental species, was rarely found, but only on another aphid species (Aphis
spiraecola). At least 3 unidentified species of aphelinids were bred and in
large numbers, but no other information on these is provided.
NETHERLANDS
A valuable review of the biological control of A. gossypii in glasshouses,
with special reference to the situation in the Netherlands, is provided by van
Steenis (1992). van Steenis (1995) evaluated 4 aphidiine parasitoids for
biological control of A. gossypii on glasshouse cucumbers. Aphidius
colemani performed the best (72 to 80% parasitisation), followed by

4.4

Aphis gossypii

67

Lysiphlebus testaceipes (26%), Ephedrus cerasicola (23%) and Aphidius
matricariae (less than 5%). The general principles of selection and
establishment of species are relevant elsewhere, although only the first of the
three species selected (Lysiphlebus testaceipes, Aphidius matricariae,
Ephedrus cerasicola) would appear to be particularly relevant to Southeast
Asia or the Pacific.
PAKISTAN
In investigations from 1967 to 1970, 6 parasitoid species and 22 predator
species were recorded attacking Aphis craccivora on a range of leguminous
crops and weeds in 5 climatologically different zones of Pakistan (Hamid et
al. 1977). Alate A. craccivora were found on soybean (Glycine max), but
colonies of apterous aphids never developed, possibly due to the presence of
abundant plant hairs.
Aphelinus abdominalis (= A. basalis), which was widespread and active
throughout the year, parasitised from 0.6% to 17.6% of A. craccivora, the
level depending upon host plant, location (hills, foothills or plains) and
season. Perhaps due to its small size, A. abdominalis was the only parasite
that attacked A. craccivora under the covering of hairs on Phaseolus aureus.
The period from oviposition in the aphid to mummy formation was 3 to 4
days and adult wasps then emerged in 5 days. Trioxys ?sinensis parasitised
up to 21.3% of aphids. Development from oviposition in the aphid to
mummy formation took 14 to 16 days and adults emerged 4 to 7 days later.
Lysiphlebus fabarum parasitised between 1.3% and 72.9% of available
hosts, Ephedrus nr cerasicola 1.3% to 1.4% and Aphidius absinthii 11%. A
low level of attack on most of the parasitoids was recorded by the
hyperparasitoids Alloxysta sp. and Pachyneuron sp.
Ants (Monomorium indicum and Pheidole sp.) were associated with over
90% of the aphid colonies. The size of A. craccivora on Vicia faba nursed by
ants was far greater than those not attended and aphid mortality was higher
when ants were absent. The most abundant of 22 predator species (Table
4.4.2) were Cheilomenes sexmaculata, Coccinella septempunctata and
Syrphus spp.
In the same environment Trioxys sinensis and Lysiphlebus fabarum
parasitised Aphis gossypii on cucumbers and on Hibiscus esculentus (Hamid
et al. 1977).
PHILIPPINES
A. craccivora is commonly attacked by Lipolexis scutellaris; and A. gossypii
by this species and also Trioxys communis. Both parasitoids also attack other
species of aphids, but not the banana aphid Pentalonia nigronervosa (V.J.
Calilung pers. comm. 1995).

68

Biological Control of Insect Pests: Southeast Asian Prospects

RƒUNION
A. craccivora is parasitised by Aphidius colemani on Gliricidia maculata
and by Aphelinus sp. on Vigna unguiculata. In turn Aphelinus sp. is
parasitised by Syrphophagus africanus and Pachyneuron vitodurense.
A. craccivora is also attacked by the coccinellid predators Scymnus
constrictus and Platynaspis capicola (Quilici et al. 1988).
SHANGHAI
The main parasitoids of A. gossypii on cotton were Trioxys communis,
T. rietscheli and Lipolexis gracilis. Next in importance was Aphidius
gifuensis, and there was occasional attack by Aphelinus abdominalis and
A. mali. The highest total parasitisation recorded was about 27%. Parasitoids
constituted 22.7% of the emergences from aphid mummies and the
hyperparasitoids Syrphophagus aphidivora 45.2%, Alloxysta sp. 15.1%,
Pachyneuron aphidis 14.7% and Dendrocerus 2.3%. The number of
parasitoids only exceeded that of hyperparasitoids during the first half of
August (Shi 1980, 1987).
TONGA
Aphidius colemani and Lysiphlebus testaceipes were introduced from
cultures in Czechoslovakia for the biological control of the banana aphid
Pentalonia nigronervosa (Stechmann and Všlkl 1988, 1990; Všlkl et al.
1990), but there is no indication that they became established. A. colemani
from a culture originating from a garden in Canberra was introduced again in
1990 and recovered in 1992 from Aphis gossypii on taro, but not from the
banana aphid. The further introduction of Aphidiidae, which are obligate
parasitoids of aphids, was recommended since they could assist in the
control of pest aphids and not pose a threat to non-target insects (Carver et al.
1993). Although 15 aphid species are recorded in Tonga including
A. craccivora, by 1993 no aphids other than A. gossypii had been recorded
as hosts of A. colemani, although recent monitoring has not been possible.
Two other primary parasitoids were recorded, Aphelinus gossypii (from
Aphis gossypii) and Lipolexis scutellaris, from a single female, free on a
banana sucker (Carver et al. 1993; Wellings et al. 1994).
Three common and widespread aphid predators were recorded (the
syrphid Ischiodon scutellaris, the coccinellid Harmonia octomaculata and
the hemerobiid Micromus timidus) in addition to 11 tramp species of ants
(Carver et al. 1993).

4.4

Aphis gossypii

69

USA
Lysiphlebus testaceipes parasitised 74.5% of Aphis gossypii on strawberries
and Aphelinus semiflavus a smaller number. Seven hyperparasitoids were
reared (Oatman et al. 1983b). L. testaceipes was considered by Schlinger
and Hall (1960) to be the most effective aphid parasitoid in southern
California and to give excellent control there of Aphis gossypii. At least 8
hyperparasitoid species were also reared (Schlinger and Hall 1960).
Entomopathogen infection was the primary cause of a reduction in
A. gossypii population that occurred during the week after peak aphid
abundance on cotton in Mississippi and continued pathogen activity,
combined with predation, maintained aphids at a low density for the
remainder of the season. Early in the season parasitisation and predation
may have reduced aphid population growth (Weathersbee and Hardee 1993,
1994).
In untreated cotton plots small predators (spiders and Geocoris spp.:
Hemiptera, Lygaeidae) had the greatest impact on A. gossypii populations
and the parasitoid Lysiphlebus testaceipes was never abundant. Fungi killed
many aphids and constituted the most important natural enemy factor in
insecticide treated plots (Kerns and Gaylor 1993). Fungi attacking
A. gossypii in USA include Neozygites fresenii (Steinkraus et al. 1992,
1993a,b,c; Sanchez-Pena 1993, Smith and Hardee 1993) and
Cephalosporium (= Verticillium) lecanii (Sopp et al. 1990, Yokomi and
Gottwald 1988). The coccinellid predators Hippodamia convergens and
Scymnus louisianae, the chrysopid Chrysoperla carnea, and Syrphus sp.
were effective in reducing populations of A. gossypii in Texas (Vinson and
Scarborough 1989). In Alabama the hemerobiid Micromus posticus is an
important predator (Miller and Cave 1987).
USSR
In southern USSR coccinellid beetles are important predators of aphids.
Adult Coccinella undecimpunctata and larvae of Hippodamia variegata are
the most voracious and prefer A. gossypii, whereas Coccinella
septempunctata prefers A. craccivora (Belikova and Kosaev 1985).
There are many papers dealing with the control of A. gossypii and
associated pests in glasshouses. The lacewing Chrysoperla carnea was
effective only when released at a predator: aphid ratio of 1:20, whereas
Chrysopa sinica was effective at 1:50 (Shuvakhina 1983). Other predators
utilised include Chrysopa perla (Ushchekov 1989) and the cecidomyiid
Aphidoletes aphidimyza (Begunov and Storozhkov 1986). Under conditions
of high humidity, high aphid mortality was caused by the fungi
Cephalosporium lecanii, Beauveria bassiana and Paecilomyces
fumosoroseus (Pavlyushin and Krasavina 1987).

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Biological Control of Insect Pests: Southeast Asian Prospects

VIETNAM
A. gossypii was one of four aphids surveyed for parasitoids by Starù and
Zelenù (1983), but the number of aphidiid species found (2) was surprisingly
low. Lipolexis scutellaris was commoner than Lysiphlebia mirzai. The
former parasitises a number of other Aphis species, including Aphis
spiraecola (= A. citricola), A. craccivora and A. nerii. Some unidentified
aphelinid parasitoids were also present.
Starù and Zelenù (1983) suggest that Lipolexis scutellaris may be a
valuable species for transfer elsewhere and also that Vietnam would benefit
from the introduction of additional parasitoid species.

The major parasitoid species
General features of the Aphidiidae
Different populations of many Aphidiidae have differing biological
properties and are often known as biotypes, i.e. contrasting groups, each
consisting of individuals of the same species. Biotypes are recognised by
biological function rather than morphology and consist of those individuals
that behave similarly as far as our immediate interests are concerned
(Mackauer and Way 1976).
The members of this family attack aphids exclusively and are probably
the most commonly observed cause of aphid mortality in the field. In
Europe, many, if not all, aphid colonies come to include some mummified
individuals (i.e. dead aphids containing a fully-grown parasitoid larva or
pupa) (Starù 1970). Aphidiidae may hibernate as prepupae within host
mummies. All are solitary endoparasitoids. All aphid stages are attacked
except the eggs, but alatae are least often attacked. The parasitoid egg is
usually inserted anywhere in the aphid abdomen. The preferred aphid larval
instar varies with the parasitoid species, but younger instars are usually
chosen. If adult aphids are parasitised the parasitoid larva may not complete
its development before the insect dies, so that the parasitoid perishes also.
Oviposition into an aphid does not ensure the successful development of a
parasitoid, since the host may be unsuitable or it may already be parasitised:
defence and immune responses are common. However parasitised hosts are
usually distinguished by the parasitoid and receive no further eggs.
If an aphid is parasitised during the last larval instar, a mummy is formed
after it moults to the adult. The first and second instars of aphidiid
parasitoids generally feed on haemolymph, but the last instar attacks the
alimentary canal and other organs, ultimately killing its host. The parasitoid
larva then spins a cocoon and pupates inside the empty aphid skin. The adult
emerges through a small circular hole usually cut dorsally or apically near

4.4

Aphis gossypii

71

the posterior of the mummy. Aphidiid mummies are round and usually
straw-coloured to brown and in some genera (e.g. Ephedrus) always black
and parchment-like. Aphelinid larvae do not spin cocoons, and their
mummies are usually slender and black (Takada 1992).
The chain of events that determines host specificity includes, in
sequence, host habitat finding, host finding, host acceptance by the
parasitoid and host suitability.
The last larval instar of some parasitoids provokes their aphid hosts to
move away from the plant on which they were feeding. With Lysiphlebus
fabarum, Ephedrus plagiator and Trioxys angelicae this migration of premummies is connected with diapause (under conditions of a short day) or
with aestivation (under conditions of a long day). Parasitoids usually emerge
without delay from aphids which become mummies where they have been
feeding (Behrendt 1968).
Starù (1970) provides additional details of many of the species of
Aphidiidae that follow below and HŒgvar and Hofsvang (1991) a
comprehensive review of their biology, host selection and use in biological
control.

Aphelinus abdominalis (= A. flavipes) Hym.: Aphelinidae
This species is widespread in Europe and is recorded also from USSR, India,
Australia and Israel. It is extensively distributed in India as one of the
important parasitoids of Myzus persicae and A. gossypii. It becomes active
in late May and is abundant during June and July. The incubation time for
eggs is 2 days and adults emerge after 13 days in September (Ramaseshiah
and Dharmadhikari 1969).
When an Indian strain was liberated in a U.K. glasshouse at 23¡C, one
week after artificially infesting plants with A. gossypii, it was unable to
overtake the pest population because the rate of increase of the pest was
scarcely affected by the parasitoid. Only when aphid overcrowding occurred
and rate of increase was self-limited, did the parasiteÕs rate of increase (6 ´ per
week) exceed that of the aphid. Reducing the glasshouse temperature to 19¡C
slowed the rate of aphid increase and permitted the parasitoids to contain the
pest before severe leaf-distortion occurred. On the other hand, when
parasitoids were present at the time that A. gossypii was introduced, aphid
reproduction was suppressed and effective control resulted (Hussey and
Bravenboer 1971).

Aphelinus gossypii Hym.: Aphelinidae
This species was described from Hawaii and is recorded from Australia,
New Zealand, India, Japan and also from Tonga, where it was reared in
abundance from Aphis gossypii on taro (Colocasia esculenta). It is probably

72

Biological Control of Insect Pests: Southeast Asian Prospects

present elsewhere under other names (Carver et al. 1993). Aphelinus
gossypii lays in some host eggs encountered, but also kills many others by
probing and then feeding on exuding fluids (Takada and Tokumaku 1996).
Parasitisation is reduced when the host is protected by the presence of ants
(Stechman et al. 1996). Aphelinus gossypii was parasitised in Tonga to the
extent of 30% to 60% by the cynipoid hyperparasitoid Alloxysta darci. This
parasitises species of Aphelinus, but not of Aphidiidae so it is most unlikely
to parasitise Aphidius colemani, a recently established parasitoid attacking
Aphis gossypii there. Alloxysta darci was earlier incorrectly identified as
Alloxysta brevis (Carver 1992; Carver et al. 1993). Aphelinus gossypii is an
effective parasitoid at low A. gossypii density and hence an important
candidate for consideration for introduction (P. Wellings, pers. comm.).

Aphelinus mali Hym.: Aphelinidae
This well known North American parasitoid of above-ground stages of the
woolly apple aphid Eriosoma lanigerum has been introduced intentionally
or inadvertently into almost every country where its host has established
itself as a pest. It is a very effective parasitoid in moderately warm climates
(Rosen 1967b) and has occasionally been reported from other hosts,
including Aphis gossypii, although in such instances it has probably been
confused with the very similar Aphelinus gossypii (M. Carver pers. comm.).
The life cycle occupies almost 20 days in summer (egg 3, larva 10 to 12 and
pupa 6 to 7 days respectively). Parasitised aphids have a strong tendency to
seek sheltered places before death (Clausen 1978).

Aphelinus semiflavus Hym.: Aphelinidae
This species has a wide host range and occurs in USA, Hawaii, India and
Europe. It overwinters as a pupa in its host. Single eggs are laid, generally in
the dorsal surface of the host abdomen. Young aphids are preferred hosts, but
even adults are parasitised, in which case fewer young are produced by the
aphid before it is killed. Over 600 eggs may be produced by a female which
often feeds on haemolymph exuding from oviposition punctures. Males are
rare and females can produce offspring parthenogenetically. Developmental
periods are: egg 3 days, larva 6 to 11 days and pupa 7 to 8 days. Although
Myzus persicae is preferred, A. semiflavus also parasitises Aphis gossypii as
one of 15 or so other hosts. In USA it was attacked by 3 hyperparasitoids,
Asaphes lucens (= A. americana) (Pteromalidae), Alloxysta sp. (Charipidae)
and Syrphophagus aphidivora (= Aphidencyrtus aphidiphagus) (Encyrtidae)
(Hartley 1922; Ramaseshiah and Dharmadhikari 1969; Schlinger and Hall
1959).

4.4

Aphis gossypii

73

Aphidius colemani Hym.: Aphidiidae (= A. platensis,
= A. transcaspicus)
Starù (1975) postulated that this species originated in India or nearby
(possibly the Eastern Mediterranean). It is now widely distributed in
Mediterranean Europe, Asia Minor, Central Asia, India, Pakistan, Africa,
South America, Australia, New Zealand and New Caledonia (Starù 1972). In
addition there have been intentional introductions to California, U.K.,
Czechoslovakia, Kenya (Starù1975) and Tonga (Carver et al. 1993). It is
rather strange, if it originated in India, that it appears to be absent from
Japan, China and possibly some of Southeast Asia (Starù 1975; Takada
1992). A. colemani is restricted to the family Aphididae. Hosts consist of at
least 9 species of Aphis, including A. craccivora and A. gossypii and at least
30 species in other genera (Elliott et al. 1994; Starù 1975).
In the field in Australia A. colemani is known to parasitise many species
in the aphid tribes Aphidini and Myzini, but rarely species in the
Macrosiphini and even more rarely species in other subfamilies (Carver et
al. 1993).
There are significant differences between countries both in the range of
hosts attacked by A. colemani and the preference for particular host species
(e.g. Messing and Rabasse 1995). This indicates that the species that is
known as A. colemani is a complex of closely-related species or biotypes.
For example, A. colemani parasitises Melanaphis donacis and Hyalopterus
pruni in Mediterranean Italy and France, but none of the many other aphids
present; in Central Asia only the latter aphid is attacked and in Iraq both
aphids are attacked, in addition to Aphis zizyphi and A. punicae. An Italian
population from Hyalopterus pruni was successfully reared on both Aphis
craccivora and A. fabae in the laboratory. Furthermore, a French population
from Melanaphis donacis was readily reared in the laboratory on Aphis
craccivora, A. fabae and Myzus persicae (Starù1975). As another example, a
strain (from Brazil) of Aphidius colemani successfully parasitised the
oleander aphid Aphis nerii in France whereas another strain (from France)
failed to do so (Tardieux and Rabasse 1986, 1988). In Mediterranean regions
A. colemani parasitised A. gossypii successfully at 20¡C, but at temperatures
above 27¡ it frequently failed to do so (Guenaoui 1991). The number of eggs
laid per female A. colemani was 302 at 20¡C and 388 at 25¡C and
development time to adult was 12.7 days and 10.0 days respectively. The
intrinsic rate of increase of the parasitoid was similar to that of A. gossypii,
suggesting that it is a promising parasitoid (van Steenis 1993). The optimum
scheme for introducing A. colemani into glasshouses for control of
A. gossypii on cucumbers has been investigated by van Steenis et al. (1996).
Chou (1984) recorded A. colemani from TaiwanÑthe first record of this
species from east AsiaÑwith H. pruni as its only host.

74

Biological Control of Insect Pests: Southeast Asian Prospects

The care needed in selecting a biotype appropriate to the target pest is
also illustrated by the following example. A. colemani from Aphis nerii
mummies on a garden plant (Tweedia coerulia) in Canberra was readily
reared for some generations in an insectary on the banana aphid Pentalonia
nigronervosa before release in Tonga for biological control of that species. It
has not been recovered from the banana aphid, but is now well established on
A. gossypii attacking cucurbits (Carver et al. 1993; Wellings et al. 1994).
When P. nigronervosa colonies are small they are mainly located deep in the
leaf sheaths and they only extend into more exposed areas as they increase in
size. Stadler and Všlkl (1991) found that Lysiphlebus testaceipes searched
mainly in exposed areas for hosts, whereas A. colemani searched both
exposed and concealed areas. This suggests that A. colemani would be the
more appropriate of the parasitoids for hosts in concealed situations and,
interestingly, it has been reported from P. nigronervosa in the field in
northern New South Wales (M. Carver pers. comm.), where it is rare and was
not encountered in recent searches (P.W. Wellings pers. comm.).
A. colemani (often under one of its synonyms) has been introduced to
several countries for the biological control of a range of aphid species (Starù
1975).

Aphidius gifuensis Hym.: Aphidiidae
This species is native to the Oriental region. Details of its fecundity,
oviposition period and longevity are provided by Fukui and Takada (1988).

Aphidius matricariae Hym.: Aphidiidae (= A. phorodontis)
This species is native to the temperate zones of the Palearctic region and has
been recorded from more than 40 aphid species in Europe, North Africa, the
Middle East, Israel, Mongolia and North and South America. It has a
preference for the green peach aphid Myzus persicae in Israel (Rosen
1967a,b) and California (Schlinger and Mackauer 1963). After contact with
honeydew or an aphid host the time spent in searching that region for hosts
increased (Masum 1994).

Ephedrus persicae Hym.: Aphidiidae
This is an almost cosmopolitan species, which is probably native to the
Middle East or Central Asia, and now occurs in the Far East, Europe, South
Africa, Madagascar, Australia and North America. It prefers leaf-curling
aphid hosts, mainly belonging to the Myzinae and, less frequently, to the
Aphidinae (Aphis spp.) (Mackauer 1963, 1965; Starù 1966). A review of the
taxonomy and biology of Ephedrus persicae and E. plagiator is provided by
GŠrdenfors (1986).

4.4

Aphis gossypii

75

Ephedrus plagiator Hym.: Aphidiidae
This aphid is native to the far eastern deciduous forests and steppes of the
Palearctic region and is widely distributed in India. It has many hosts
amongst species of Aphis and Myzus (Starù 1967a).

Lipolexis gracilis Hym.: Aphidiidae
This is a European or Far Eastern species with hosts in a number of aphid
genera, including Aphis (Starù 1967a).

Lipolexis scutellaris Hym.: Aphidiidae
This is an oriental species (Raychaudhuri 1990) and is known from southern
China, Japan and Taiwan and also from India, Pakistan and Tonga. It has a
wide host range and an apparent preference for Aphis species (Carver et al.
1993).

Lysiphlebia japonica Hym.: Aphidiidae
This is native to the Far East and is probably a well-adapted species for
tropical climates. It typically occurs in forest or open woodland
environments on many species in the genus Aphis in addition to those in a
number of other related aphid genera (Starù 1967b).

Lysiphlebia mirzai Hym.: Aphidiidae
This species was described from India and is known also from Vietnam and
China.

Lysiphlebus fabarum Hym.: Aphidiidae
(= Lysiphlebus confusus, L. ambiguus)
This is a Palaearctic species (Europe, Asia Minor, Caucasus, Central Asia),
which is now widespread and occurs also in Israel, a number of African
countries and USA. It is the most abundant parasitoid of the black citrus
aphid Toxoptera aurantii in Italy (Starù 1964) and Israel (Rosen 1967a,b). In
some countries it is biparental but, in Israel, only females are known (Rosen
1967a,b). It is recommended by Starù (1967b) as a species useful for
biological control. L. fabarum is both biparental and parthenogenetic
(Carver 1984) and 15 to 16 generations a year have been recorded in Italy
(Tremblay 1964). It has a very extensive host range, with records from at
least 144 species of aphids in 36 genera, 81 (56%) of these species belonging
to the genus Aphis (Carver 1984).
There is little doubt that L. fabarum refers to a complex of closely related
sibling species or at least of host-specific biotypes. For example, in the
laboratory L. fabarum bred from Aphis species readily parasitised other
Aphis species, but not Brachycaudus sp.. However, in the field, colonies of
Brachycaudus cardui heavily parasitised by L. fabarum shared the same
host plants as unparasitised Aphis fabae (Mackauer 1962a). The influence of

76

Biological Control of Insect Pests: Southeast Asian Prospects

temperature and humidity on the development of L. fabarum in A. gossypii
and A. craccivora has been reported by Davletshina and Gomolitskia (1975)
and methods for its mass production by Tregubenko and Popushoi (1987).

Lysiphlebus testaceipes Hym.: Aphidiidae
This parasitoid has a natural range extending from North America through
Central America to the northern parts of South America. It is now known
also from Hawaii, Australia, Europe and East Africa. It is the commonest
native parasitoid of aphids in Mexico (Starù and Remaudi•re 1982). It has a
very wide host range, having been reported from at least 79 aphid species (32
in the genus Aphis) in 32 genera (Carver 1984).
Oviposition generally occurs in the abdomen of half grown and
unparasitised hosts and, when hosts are scarce, more than one egg may be
deposited (Sekhar 1957). Up to 254 eggs may be laid. It is heavily attacked
by hyperparasitoids in its natural range (eg. 6 species when attacking Aphis
gossypii (Schlinger and Hall 1960) or 7 species (Oatman et al. 1983b)).
L. testaceipes was present in Australia (New South Wales and South
Australia) prior to its introduction as a biological control agent and attacked
an indigenous aphid Aphis acaenovinae (Starù and Carver 1979).
There are many examples to demonstrate that L. testaceipes consists of
biotypes. Thus, Californian L. testaceipes is unable to complete its
development on Aphis spiraecola, whereas a Cuban strain does so
successfully. The Californian strain did not attack Aphis nerii after
introduction to Hawaii, although a Mexican strain subsequently introduced
did so (Starù 1970). Then again, the biotype from A. craccivora on Robinia
pseudacacia does not parasitise this same aphid on Phaseolus vulgaris;
another biotype prefers A. gossypii on squash to this same aphid on hibiscus
(Sekhar 1960; Tremblay and Barbagallo 1982). The effectiveness of
Lysiphlebus testaceipes as a parasitoid on A. gossypii is thus significantly
affected by the host plant on which the aphid is feeding (Steinberg et al.
1993).
L. testaceipes is reported to attack A. gossypii in Cuba (Starù 1981),
Mexico (Starù and Remaudi•re 1982) and, after introduction to Europe, in
Spain, France and Italy. In Europe it now attacks more than 26 aphid species
including A. craccivora and A. gossypii, often with high levels of
parasitisation (Starù et al. 1988a,b,c).
Lysiphlebus testaceipes was successfully introduced in 1923 from
California to Hawaii for the biological control of aphids, including Aphis
craccivora and A. gossypii. It soon spread widely throughout the islands,
attacking these and other aphid species. In 1965, a further introduction from
Mexico was made to control the oleander aphid Aphis nerii which had
previously escaped attack. By 1927 several hyperparasitoids were recorded

4.4

Aphis gossypii

77

as attacking L. testaceipes breeding in Rhopalosiphum maidis, an important
virus vector on sugarcane (Timberlake 1927). According to Starù (1970), the
introductions were partially to substantially effective, but importation of
additional species was recommended. L. testaceipes from Cuba was
introduced to Czechoslovakia for the biological control of aphids in
greenhouses and also of some pest aphids in some subtropical areas (Starù
1970). L. testaceipes was introduced in 1956 and 1960 from Hawaii to the
Philippines, but no recoveries have been recorded (Baltazar 1963).
L. testaceipes was introduced in 1973 from Cuba into France and Corsica
(Italy) to reduce the numbers of citrus aphids (Starù et al. 1988b). It became
well established, heavily parasitising Aphis gossypii and several other aphids
(Rabasse 1986).
Although there do not seem to be comparable data for A. gossypii, Hall
and Ehler (1980) found that L. testaceipes averaged 79.5% parasitisation of
Aphis nerii populations on oleander, with an average density of 12.4 aphids
per shoot. When natural enemies were excluded, an average of 32.6 aphids
were present per shoot, a clear indication that parasitisation was having a
significant effect. A hyperparasitoid Pachyneuron sp. was active, but
appeared to be generally unimportant in aphid population regulation. The
average fecundity of L. testaceipes was found to be 128.2 eggs at 20¡C and
180 eggs at 25¡C. Development from egg to female adult was completed in
12.9 days at 20¡C and 9.5 days at 25¡C; and the life span of females was 2.7
and 2.6 days at 20 and 25¡C respectively. At 20¡C the intrinsic rate of
increase was slightly lower than that of Aphis gossypii, but was the same at
25¡C. It was concluded that, at temperatures below 25¡C, L. testaceipes
might not be able to overtake an established population of A. gossypii (van
Steenis 1994). Earlier Schlinger and Hall (1960) concluded that
L. testaceipes was capable of producing excellent control of both
A. craccivora and A. gossypii.

Praon volucre Hym.: Aphidiidae
This is a palearctic species and is known from the Middle East, North Africa,
India and Central Asia. It has an extensive and diverse host range, having
been recorded from at least 90 aphid species in 35 genera. There is good
evidence that P. volucre exists as a complex of host-specific biotypes or
sibling species (Mackauer 1959, 1962a,b). Its biology has been studied by
Beirne (1942). As in other Praon spp., pupation takes place under the empty
mummy of the parasitised host. P. volucre females have been observed to
use their front legs to hold the host aphid during oviposition (Beirne 1942).
Although it has been recorded from A. craccivora in the field (Starù 1967a)
and the laboratory (Carver 1984), it does not seem to have been reported
from A. gossypii.

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Biological Control of Insect Pests: Southeast Asian Prospects

Trioxys angelicae Hym.: Aphidiidae
This is widely distributed in Europe, Asia Minor and North Africa and has
been reared from a wide range of hosts (Rosen 1967a,b).

Trioxys communis Hym.: Aphidiidae
This very important parasitoid of A. gossypii in China has been studied in a
series of papers by Shi (1984, 1985, 1986). It develops in 8 days at 30¡C and
in 16 days at 20¡C. When 4th instar A. gossypii are parasitised they
mummify in the adult stage, having produced very few offspring. It is
hyperparasitised by the pteromalid Pachyneuron aphidis.
T. communis has also been recorded from A. gossypii in Japan, Korea,
Taiwan and India and has been taken rarely in Malaysia from Aphis
spiraecola (= A. citricola), but apparently not from other aphids (Ng and
Starù 1986).

Trioxys indicus Hym.: Aphidiidae
A valuable review of the biology, ecology and control efficiency of this
parasitoid is presented by Singh and Agarwala (1992). Its biology has been
studied by Subba Rao and Sharma (1962) and later in a long series of papers
from India (e.g. Singh et al. 1979; Sinha and Singh 1980a,b; Singh and Sinha
1980a,b,c, 1982a,b; Pandey et al. 1982, 1984; Kumar et al. 1983; Singh and
Pandey 1986; Singh and Srivastava 1988a,b, 1991, Singh and Agarwala
1992). Ghosh and Agarwala (1982) provide host, host plant records and
information on its distribution in India.
Recorded hosts of T. indicus belong to 24 species of aphids in 14 genera,
of which species of Aphis are best represented. The majority of host aphids
are polyphagous, 6 are oligophagous and 1 monophagous. T. indicus prefers
hosts on cultivated and wild shrubs to those on herbaceous and woody
plants. A. craccivora is parasitised to the extent of 87% on pigeon pea (Singh
and Tripathi 1987) and A. gossypii to the extent of 60% on both bottle gourd
(Singh and Bhatt 1988) and eggplant (Subba Rao and Sharma 1962), and
30% on cotton (Agarwala 1988).
Based on extensive field observations, the three main hosts of T. indicus
are A. craccivora, A. gossypii and A. nerii, each of which is parasitised by a
range of other polyphagous parasitoids.
The native range of T. indicus is largely the Indian subcontinent,
although it has also been recorded from Taiwan (Starù and Schlinger 1967).
It is most abundant in tropical and subtropical regions, where its numbers are
comparatively low in summer and in rainy months and higher in the cooler
months (Agarwala 1988).
T. indicus females prefer to oviposit in second and third instar host
nymphs. Probing without oviposition is common with first and second

4.4

Aphis gossypii

79

instars, leading to high aphid mortality (up to 80% for first instars). Hosts
that are already parasitised are generally avoided. Fecundity varies, but the
figure of 143 offspring per female is quoted. The average time from
oviposition to emergence is 10 days at 24 to 27¡C on A. gossypii (Subba Rao
and Sharma 1962) and 16 to 18 days at 24 to 26¡C on A. craccivora.
T. indicus lives less than 10 days in the laboratory (Pandey et al. 1982).
Augmentation of T. indicus early in the season in pigeon pea fields in India
was sufficient to control A. craccivora (Singh and Agarwala 1992). Extracts
of A. craccivora sprayed on pigeon pea increased the fecundity of T. indicus
and reduced the population doubling time (Singh and Srivastava 1991).
A density-dependent relationship between T. indicus and its hosts has
been reported by several authors (Subba Rao and Sharma 1962; Singh and
Sinha 1980a; Saha and Agarwala 1986; Bhatt and Singh 1991a,b ).
Eleven hyperparasitoids of T. indicus are known (Singh and Agarwala
1992) and these should be rigorously excluded in any biological control
transfers.
Singh and Agarwala (1992) conclude that T. indicus is a very important
parasitoid, especially of several species of Aphis in India, that it possesses
most of the desirable attributes of a successful biological control agent and is
therefore a promising natural enemy for introduction elsewhere against
relevant pest aphids. It is also of value for inundative releases (Singh and
Rao 1995).

Diptera
Endaphis maculans Dip.: Cecidomyiidae
This aphid endoparasitoid attacked Toxoptera aurantii freely, but
A. gossypii only lightly. It was seldom found in A. craccivora (Kirkpatrick
1954). E. maculans lays its eggs on aphid-infested leaves and, upon
hatching, the larva searches for aphids. When a host is encountered the larva
penetrates the aphids dorsum and develops as an endoparasitoid, leaving as a
mature larva via the aphidÕs anus. Average development time from egg to
adult at 25¡ to 26¡C was 19.1 days (Tang et al. 1994).

An aphid-specific predator
Aphidoletes aphidimyza Dip.: Cecidomyiidae
This is a common and widely distributed species throughout the northern
hemisphere. It has been recorded from Japan, USSR, Czechoslovakia,
Austria, Germany, Finland, France, Netherlands, U.K., Italy, Israel, Egypt,
Sudan, Canada, USA and Hawaii. It is not recorded from Australia or New
Zealand.

80

Biological Control of Insect Pests: Southeast Asian Prospects

Larvae of Aphidoletes reportedly feed exclusively as predators on aphids
and are hence more host-specific than many of the other predators:
A. aphidimyza is the best known of the cecidomyiid predators. Adults
emerge during the day from pupae in the soil. They generally fly between
sunset and sunrise. Orange-coloured eggs are laid singly or in clusters of up
to 40, usually on plants near aphid colonies. Females live up to 14 days in the
laboratory and lay about 100 eggs. These hatch after 3Ð4 days and first instar
larvae immediately seek out and attack aphids. They usually attack by
piercing a leg joint or some other joint. A toxin is perhaps injected, since the
aphid is rapidly immobilised before its body fluids are extracted. The
shrivelled bodies of some aphids remain attached to the plant by the stylet.
Larval development involves 3 instars and takes 7 to 14 days (Harris 1973).
On the other hand, Herpai (1991) reports 21 days from egg to adult (egg 3
days, larva 8 days, pupa 10 days).
Roberti (1946) gave a figure of 60 to 80 Aphis gossypii attacked per day.
Predator larvae usually drop to the soil to pupate. They construct small silk
cocoons in the top few millimetres of soil, but occasionally cocoons may be
spun on plants. Larvae pupate within a few days of cocoon construction and
adults emerge after 1Ð3 weeks depending upon temperatures. The life cycle
can be completed in about 3 weeks at temperatures above 21¡C (Harris 1973;
Herpai 1991).
Harris (1973) does not record it from A. craccivora. Two
hyperparasitoids of A. aphidimyza are known in Africa, the platygasterid
Synopeas rhanis and an unidentified braconid (Harris 1973).

Comments
There are many reports in the literature that natural enemies play an
important role in reducing (and probably regulating) the abundance of pest
aphids. More than 100 biological control programs have been mounted
against at least 26 aphid species and 48% of them have reported success
(HŒgvar and Hofsvang 1991). Twenty three species of aphidiid parasitoids
have been used in classical biological control of aphids and the parasitoids
became established in 32 out of 55 attempts (Greathead 1989). Most pest
aphids are attacked in their native range by many parasitoids and predators
and by a few pathogenic fungi. However, many of the natural enemies have
not accompanied their aphid hosts when these have spread into new regions.
Indeed, they may not even be present throughout the presumed native range
of their host. Since both the direct and indirect damage caused by aphids
seem to be proportional to their numbers, any reduction is potentially
beneficial. Even in the case of virus transmission, where the feeding (or

4.4

Aphis gossypii

81

probing) of single infected aphids on a crop may lead to substantial loss,
reduction in aphid numbers will more than proportionally reduce the
probability of flying aphids migrating to an uninfected plant (Wellings
1991), because reduced crowding of aphids usually results in a lower
number forming wings. As indicated above, there have been a number of
attempts at classical biological control of aphids, and there are at least 7
well-documented successes up to 1988 (Hughes 1989). None of these,
however, involved A. craccivora or A. gossypii as the main target. These
latter species have, however, been subjected to important attack by
parasitoids introduced primarily against another pest aphid in the same
general environment. For example, although Aphidius colemani failed to
establish on Pentalonia nigronervosa in Tonga, it did so very successfully
there on A. gossypii. Although A. craccivora is also present in Tonga,
Aphidius colemani has not yet been recorded from it (Carver et al. 1993), but
monitoring has been minimal.
The best predictor of success in biological control is previous success
with a natural enemy in a similar environment. If this experience is
unavailable, the best chances appear to be with a climatically adapted,
adequately host-specific, natural enemy that is known to attack the pest in its
native or expanded range. Parasitic wasps appear to be the best natural
enemies available for aphids, because they are generally far more host
specific than predators and are often more efficient at searching for hosts at
low aphid densities (Hughes 1989). Predators can be very effective in
reducing aphid numbers at certain times of the year, but are often unable to
prevent damage. Furthermore, their general lack of host specificity makes
most of them unattractive to authorities responsible for approving
introductions, so they have not been dealt with in any detail in this dossier.
A feature that makes it difficult to generaliseÑand even to make clear
recommendationsÑis that many of the identifications of some of the
parasitoids are incorrect, particularly the earlier ones, but even some of the
more recent ones made by non-specialists. The selection of appropriate
natural enemies for an aphid biological control program requires a detailed
knowledge of the ecology of the target aphid and often of other potential
aphid hosts in the environment where it is causing problems; also of where to
obtain parasitoid biotypes with appropriate host specificity and habitat
adaptation. If an apparently good species fails to establish or, if established,
to become effective, it is probably worth seeking the same enemy from a
potentially more appropriate source, such as one with a better climate match;
or a biotype that exhibits a special preference for the target aphid; or the first
generation from field-collected material, rather than employing individuals
bred for many generations in the laboratory (Hughes 1989).

82

Biological Control of Insect Pests: Southeast Asian Prospects

Both A. craccivora and A. gossypii are now almost cosmopolitan in their
occurrence throughout the temperate, subtropical and tropical regions of the
world and both are polyphagous. At least A. gossypii exists as a series of
biotypes with different spectra of host preferences and both it and
A. craccivora owe a considerable amount of their economic importance to
their ability to transmit an extensive range of important plant viruses.
Both aphids are attacked by a wide range of parasitoids and share a
number of these species. The majority of these parasitoids are polyphagous
and attack many other (but not all) species of the genus Aphis and some
species in related aphid genera. Two important parasitoids are the American
Lysiphlebus testaceipes and the Indian Aphidius colemani. These parasitoids
both exist in a number of biotypes with different host spectra and abilities to
attack A. craccivora and A. gossypii on some plants, but not on others. Thus,
when biological control is attempted, care must be taken to select a
parasitoid biotype that is appropriate for the aphid biotype, the host plant and
the prevailing environmental conditions. Laboratory comparison of the
impact on A. gossypii of Aphidius colemani, Lysiphlebus testaceipes and
Aphidius matricariae indicated that A. colemani was the most and
A. matricariae the least effective (van Steenis 1992). The polyphagous
nature of many effective parasitoids has the advantage that, in any region, a
number of other aphid species will be parasitisedÑand hence serve as
valuable reservoirs of parasitoids when the target pest population falls to a
low level. The aims of aphid biological control are (i) as far as possible to
maintain densities below those at which alates are formed due to crowding
and (ii) if possible, to depress densities still further, so that sap removal,
volume of honeydew produced and plant deformation become unimportant.
Takada (1992) points out that the aphid parasitoid fauna in Far East Asia
is quite different from that in India. Thus, the most important parasitoids of
A. gossypii in the Far East are Trioxys communis, Lysiphlebia japonica and
Aphelinus sp., none of which occurs in India. On the other hand, the
dominant parasitoid of A. gossypii in India is Trioxys indicus, which is
present in Taiwan, but not in Japan or Korea. Another Oriental species,
Lipolexis scutellaris occurs in Hong Kong, Vietnam and Malaysia. It
appears that Indian parasitoids, rather than Far East Asian species are
present in Southeast Asia. However inadequate information is available in
Southeast Asia on the natural enemies of A. craccivora and A. gossypii
present in the many different crop systems and environments in which these
aphids occur. Even within a single country, it is necessary to examine the
aphid population in the particular situations and the crops where they are
causing important problems. This can be illustrated by the parasitoid
complex of A. gossypii in Japan where it occurs in habitats ranging from

4.4

Aphis gossypii

83

open fields with low vegetation to garden habitats with low shrubs. In both
situations it is attacked by specialised and generalist parasitoids. Of the two
specialised parasitoids, Trioxys communis prefers the open field whereas
Lysiphlebia japonica the garden habitat. Of the generalist parasitoids
Aphelinus sp. prefers the open field and Ephedrus sp. the garden habitat.
Thus the parasitoid complex of A. gossypii on cucumber, eggplant or taro in
an open field is quite different from that on Hibiscus or Rhamnus in a garden
(Takada 1992). Hence, in any country, the aim would be to determine
whether there are gaps in the range of parasitoids present that might be filled
with species known to be effective elsewhere. If there appear to be important
gaps, there are good reasons for believing that there could be considerable
advantages in filling them. Nevertheless, there are greater complexities than
for many other pests in making clear recommendations, largely because of
the range of biotypes that exist in both aphid hosts and their parasitoids.
Although it is not possible to make specific recommendations for any
country without knowing what parasitoids are already present and the
crop(s) on which control is desired the following parasitoids merit
consideration:
Aphelinus gossypii
Lysiphlebia japonica
Aphidius colemani
Lysiphlebus fabarum
Aphidius gifuensis
Lysiphlebus testaceipes
Ephedrus persicae
Trioxys communis
Lipolexis scutellaris
Trioxys indicus
Even if any of these species is already in a country, but not attacking
either A. craccivora or A. gossypii, a host-adapted strain should be
considered for introduction. It is possible that some of the parasitoid species
will compete directly with species that are already present. If this happens
and one parasitoid species is displaced from an aphid host in some situations
or on some crops, the final result will almost always be a lower overall aphid
density.

85

4.5

Cosmopolites sordidus

China
P

India

+
Taiwan

Myanmar
?
Laos
20°

20°

++

Thailand

Philippines

+

Cambodia

+

Vietnam

+++

++

++

Brunei

Malaysia


+



Singapore

Papua
New Guinea

++

Indonesia

++

20°

Australia

20°

The banana weevil borer Cosmopolites sordidus is native to the Indo-Malaysian region.
There have been many attempts at biological control, involving three predatory beetles, but
the results have generally been disappointing. Many predators attack Cosmopolites larvae in
their native range, especially the histerid beetles Plaesius javanus and Plaesius laevigatus in
Indonesia and Dactylosternum hydrophiloides in Malaysia. The first two species have been
established in Fiji, with some reduction in Cosmopolites abundance, but it remains an important
pest there. In Cook Is, they appear to have had little impact. Unless beneficial effects from P.
javanus and P. laevigatus can be demonstrated in Fiji or other countries, there would seem to be
little point in introducing these species to any additional countries. In Kenya, Koppenhšfer et al.
(1992) recorded two important predatory beetles, Dactylosternum abdominale and
Thyreocephalus interocularis, capable of reducing larval abundance by 40% to 90%. In Cuba,
the ant Tetramorium bicarinatum is reported to keep C. sordidus under control. This ant is
widespread, but there is no information on its effectiveness elsewhere.
It would be highly desirable to investigate whether the weevil is indeed absent or of very
minor importance in some areas (e.g. Myanmar, southern China) and, if so, what part is played
by resistant cultivars, cultural methods or natural enemies. Ants might be evaluated for their
effects in the Solomon Is where Cosmopolites is unimportant or in Papua New Guinea where it is
of local importance only.

86

Biological Control of Insect Pests: Southeast Asian Prospects

Cosmopolites sordidus (Germar)
Coleoptera: Curculionidae
banana weevil borer

Rating
Southeast Asia
+++
13

++
+
P
?

China

Southern and Western Pacific

Viet
Msia, Brun, Indo,
Phil
Thai, Sing
Camb
Myan, Laos

+++
35

P

++
+
P

Cook Is, Fr. P, Fiji, Guam,
New Cal, Niue, A Sam, Tong
PNG, Sol Is, Sam, Van,
W&F
FSM
Kir

This account brings up-to-date the chapter on C. sordidus in Waterhouse and
Norris (1987) and increases its relevance to Southeast Asia.

Origin
According to Purseglove (1972) the genus Musa has a centre of diversity in
the Assam-Burma-Thailand area and it probably originated there. The
banana weevil borer is also stated to be a native of the Indo-Malaysian region
(Zimmerman 1968; Clausen 1978). Although this region seems a likely
centre of origin of the weevil, and those investigating its biological control
have consistently assumed so, there had already been, by the time of
GermarÕs 1824 description based on material from India, centuries of
intercontinental travel by Europeans, by means of which the weevil could
have spread to many other lands in infested plants, thus obscuring its origin.
There are only two species in the genus Cosmopolites, the lesser known
C. pruinosus occurring in Borneo and the Philippines and, after introduction,
in Micronesia (Zimmerman 1968).

Distribution
C. sordidus is present in virtually all banana-growing areas of the world,
including most, if not all, of Southeast Asia and most of the Pacific.
Exceptions in the Pacific are Marshall Is, Tuvalu and Tokelau (Anon. 1979b;
Waterhouse and Norris 1987; Waterhouse 1997). In Southeast Asia no
information is available from Laos and the situation in Myanmar is unclear.
A recommendation was made in the standard work on the ÔInsect Pests of
BurmaÕ (Ghosh 1940) to guard against the introduction to that country of
C. sordidus and neither N. von Keyserlingk nor G. Pierrard (pers. comm.

4.5

Cosmopolites sordidus

87

1992) were able to establish, when based in Yangon, that the species
occurred in Myanmar. Its uncertain status in Myanmar and Laos and its
status of Ôpresent, but unimportantÕ, in Cambodia and China clearly merits
further investigation.

Biology
The ovoid, 2 mm long, white eggs are laid singly, usually between the leafsheath scars on the crown of the banana rhizome, in small cavities chewed
out by the female just above the ground surface. Laying also occurs on the
pseudostems of fallen plants. The eggs hatch in about 8 days in summer and
the larvae tunnel into the tissues. On reaching maturity, after about 20 days
feeding in warm weather (Jepson 1914), the larvae tunnel to near the surface
of the corm and form an oval chamber in which they pupate. The period from
egg to adult may be as short as 29 days in the New South Wales summer or as
long as 6 months in the cooler parts of the year (Hely et al. 1982). Fifty days
is a more usual maximum for the life cycle in Fiji (Swaine 1971). The
nocturnal adults also tunnel in banana tissues. During the day they generally
hide in or around the rhizomes or between the leaf sheaths at or just above
ground level. They are slow moving and will feign death when disturbed.
They seldom fly, but walk over the soil surface and vegetation. Whalley
(1957) found that adults dispersed slowly in Uganda. Of 400 marked weevils
35% were recovered over an 8-month period within a radius of 7 m from the
release point. In Colombia a few marked adults were recaptured after 2
weeks at a distance of 6 to 8 m, but 23 months after release none were found
in another plantation 20 m away (Cardenas and Arango 1986). Male
C. sordidus release an aggregation pheromone, sordidin (Beauhaire et al.
1995), from the hindgut which attracts both males and females, but females
do not produce a pheromone attractive to either sex (Budenberg et al. 1993b;
Ndiege et al. 1996). Both sexes were attracted to freshly cut rhizome and
pseudostem and females to rotting pseudostem (Budenberg et al. 1993a).
Eggs are laid throughout the year at a rate varying with temperature and up to
100 a year. Adults may live as long as 2 years (Swaine 1971). They can
survive in captivity for 14 weeks without food (Zimmerman 1968).
Laboratory rearing of C. sordidus was studied by Afreh (1993) and
Koppenhšfer and Reddy (1994).

88

Biological Control of Insect Pests: Southeast Asian Prospects

Damage
The status of C. sordidus as one of the most important pests of bananas is
often reported (Swaine 1971; Purseglove 1972) and, indeed, many adults
and larvae are often present. It is reported to be now the most important pest
of bananas in Africa (Nahif et al. 1994; Ortiz et al. 1995). However, in order
to place these reports in context, it is necessary to outline the stages of
growth of the plant. Bananas are propagated vegetatively by planting
rhizomes (corms), which give rise to shoots after a few weeks. As the plant
grows, a pseudostem is formed from the sheaths of the leaves which
continue to develop internally until a flowering shoot emerges from the top
of the pseudostem at a height of 2 to 4 m depending upon the variety. When
each bunch of bananas is cut, the pseudostem bearing that bunch is also cut
down. At the same time a healthy sucker growing from the same base is
selected to succeed and other suckers removed. C. sordidus larvae tunnel in
the rhizome and the base of the pseudostem, but do not attack the roots. This
tunneling may kill young plants and greatly increases the susceptibility of
mature plants to wind damage. Adults cause little damage and feed mainly
on rotting banana tissue. Injury by larvae to the rhizome can interfere with
root initiation and sap flow within the plant and grossly infested plants may
bear small bunches of undersized fruit (Wright 1976). Much of the damage
attributed to C. sordidus is probably caused by rhizome rot or nematodes
(Ostmark 1974). In East Africa the combined attack of nematodes and of
banana weevil borer is considered to be the main reason for the serious
decline in productivity of bananas (De Langhe 1988), but the precise role of
the weevil is still to be established. Suckers infested with nematodes were
found to be more than four times more likely to be attacked by C. sordidus
than suckers without nematodes (Speijer et al. 1993). Although the banana
weevil borer has occasionally been responsible for severe losses of newlyplanted rhizomes, extensive experiments in Central America agree with
some reports from Australia (Smith 1993; Wallace 1937) that weevil
damage is not as important as frequently claimed since the larvae have a
strong preference for rhizomes of harvested plants over healthy rhizomes
(Ostmark 1974). There are reports that some banana cultivars are
comparatively resistant to attack by C. sordidus (Mesquita et al. 1984;
Mesquita and Caldas 1987), but the mechanism of such resistance
(repellency, toxicity, greater tolerance to damage, etc.) is not known.
In Australia, Braithwaite (1963) concluded that the importance of
C. sordidus infestation is aggravated by poor culture, but that benefit could
be derived from almost complete control with insecticides (Braithwaite
1958). In the same region Loebel (1975) concluded that heavy weevil

4.5

Cosmopolites sordidus

89

infestation is a symptom, rather than a cause, of a declining plantation,
because 2 years of effective use of chemicals failed to improve growth or
yield in his experimental plots. In Costa Rica several insecticides were
effective in controlling C. sordidus populations, but banana yields were not
increased (Nanne and Klink 1975). Nevertheless C. sordidus is always likely
to be of importance in areas that experience strong winds. The abundance of
adult weevils can be estimated by counting the number attracted to cut
segments of pseudostem and of larvae by estimating the area damaged and
counting the number of galleries exposed by slitting the rhizome or the
pseudostem very near to its base (Vilardebo 1973; Delattre 1980; Mesquita
1985; Smith 1993). In spite of this, an adequate relationship between adult
and larval abundance and economic loss remains to be established. It must
be added, however, that there continues to be a widespread view that
C. sordidus is a major pest.

Host plants
The weevil attacks all banana (Musa sapientum) cultivars, including
plantain, and also Manila hemp (Musa textilis). It has been recorded in
earlier days (but not in recent years) from plants in other Orders, but these
reports are almost certainly in error.

Natural enemies
Although many predators are known to attack C. sordidus eggs, larvae and
pupae (Table 4.5.1), it is extraordinary that, with one possible exception, not
a single parasitoid of any life history stage has been recorded. That exception
is the early report from the Philippines of Cendana (1922), who found a
chalcidid wasp in one of his C. sordidus breeding cages, but it may not have
been parasitising the weevil. It is, perhaps, less surprising that the heavily
sclerotised adult weevil has very few enemies. It is true that some weevils
are effectively attacked by hymenopterous parasitoids and that some
tachinid parasitoids are able to attack certain weevils by laying eggs in their
food or beneath their mouth when they are feeding (Jacobs and Renner
1988), but neither has been observed for C. sordidus. Koppenhšfer
(1993a,b) estimated that 58% of the eggs were accessible to predators and
presumably at least as many should be available to parasitoids if there were
any. Most eggs were found in the surface layer of rhizomes, particularly in
the crown, but some are also laid at the base of pseudostems and in the walls
of abandoned larval tunnels in both pseudostems and rhizomes. As soon as
eggs hatch the young larvae immediately tunnel deeper into the plant tissue
and thus become far less available to natural enemies.

90

Table 4.5.1

Insect predators of Cosmopolites sordidus

Insect

Stage
attacked

Country

Reference

LABIIDAE
Carcinophora (=Psalis) americana

larvae

Euborellia (= Anisolabis) annulipes

egg, larva

Jamaica
Puerto Rico
Jamaica
Kenya

Labia borellii
Labia curvicauda

egg, larva
egg, larva

Kenya
Kenya

Edwards 1934
Anon. 1939
Edwards 1934
Koppenhšfer et al. 1992; Sirjusingh
et al. 1992
Koppenhšfer et al. 1992
Koppenhšfer et al. 1992

egg

Malaysia, widespread

China 1935

egg

Malaysia

China 1935

egg

Malaysia, Papua New Guinea

China 1935

larva

Malaysia

China 1935

Kenya

Koppenhšfer et al. 1992
Sirjusingh et al. 1992
Sirjusingh et al. 1992

DERMAPTERA

CYDNIDAE
Geotomus pygmaeus
MIRIDAE
Fulvius nigricornis
NABIDAE
Phorticus pygmaeus
REDUVIIDAE
Physoderes curculionis

COLEOPTERA
CARABIDAE
Abacetus? optimus
Galerita (=Propagalerita) bicolor
Scarites sp.

Biological Control of Insect Pests: Southeast Asian Prospects

HEMIPTERA

Table 4.5.1 (contÕd) Insect predators of Cosmopolites sordidus
Insect

Stage
attacked

Country

Reference

Australia,
New Caledonia

Froggatt 1928a
Jacques 1931

Kenya
Malaysia
Trinidad
Kenya
St Vincent

Koppenhšfer et al. 1992
Clement 1944
Pea & Duncan 1991
Koppenhšfer et al. 1992
Sirjusingh et al. 1992
Sirjusingh et al. 1992
Froggatt 1928b
Froggatt 1928b; Clement 1944;
Jepson 1914
Charernsom 1992
Corbett 1936; Lamas 1947
Corbett 1936
Koppenhšfer et al. 1992

COLEOPTERA
ELATERIDAE
unidentified spp.
HISTERIDAE
Hister niloticus
Hololepta (= Lioderma) quadridentata

larva

larva
egg, larva, pupa

Kenya

larva

D. hydrophiloides

larva

D. intermedium
D. profundus
D. subdepressum
D. subquadratum
Omicrogiton insularis

larva

Kenya,
Philippines
Indonesia,
Malaysia
Guinea
San Thom•
Trinidad
Malaysia
Malaysia

larva
larva

Corbett 1936; Edwards 1939,
Koppenhšfer et al. 1992
Corbett 1936
CuillŽ 1950
Beccari 1967
Cock 1985
Corbett 1936
Corbett 1936

91

Platysoma abrupta
Platysoma sp.
unidentified histerid sp.
HYDROPHILIDAE
Dactylosternum abdominale

Indonesia
Malaysia
Indonesia
Thailand
Malaysia

larva, pupa

Cosmopolites sordidus

larva, pupa

4.5

Hololepta striaditera
Hololepta sp.
Lioderma sp.
Plaesius (= Hyposolenus) laevigatus
Plaesius javanus

Insect

92

Table 4.5.1 (contÕd) Insect predators of Cosmopolites sordidus
Stage
attacked

Country

Reference

larva

Indonesia

Jepson 1914

larva
larva
egg. larva
egg, larva
larva
egg, larva

Indonesia
Malaysia
Kenya
Kenya
Kenya
Indonesia
Kenya

Jepson 1914; CuillŽ 1950
Corbett 1936; Lamas 1947
Koppenhšfer et al. 1992
Reddy 1988
Koppenhšfer et al. 1992
Jepson 1914, CuillŽ 1950
Koppenhšfer et al. 1992

egg

Kenya

Koppenhšfer et al. 1992

larva

Indonesia,
India,
Philippines
Brazil

Froggatt 1928b; Beccari 1967
Jepson 1914

Kenya
Cuba
Cuba

Reddy 1988
Castineiras et al. 1991a
Roche & Abreu 1983

COLEOPTERA

DIPTERA
RHAGIONIDAE
Chrysopilus ferruginosus

Chrysopilus sp.

Sirjusingh et al. 1992

HYMENOPTERA
FORMICIDAE
Anochaetus sp.
Pheidole megacephala
Tetramorium bicarinatum
(= T. guineense)

egg, larva
egg, larva

Biological Control of Insect Pests: Southeast Asian Prospects

SILVANIDAE
Cathartus sp.
STAPHYLINIDAE
Belonuchus ferrugatus
B. quadratus
Charichirus sp.
Eulissus sp.
Hesperus? sparsior
Priochirus (= Leptochirus) unicolor
Thyreocephalus? interocularis
TENEBRIONIDAE
Eutochia pulla

4.5

Cosmopolites sordidus

93

Because of the reported existence of natural enemies of C. sordidus in
Indonesia and nearby countries, Jepson (1914) was sent from Fiji to
investigate the situation in Java. The histerid beetle Plaesius javanus was
commonly found preying on C. sordidus and other insects in the soil and leaf
litter. Two staphylinid beetles Belonuchus ferrugatus and Priochirus
(= Leptochirus) unicolor and a silvanid beetle Cathartus sp. were also
shown to attack C. sordidus larvae, but they were not nearly as voracious.
The predatory larvae of the rhagionid fly Chrysopilus ferruginosus attacked
C. sordidus larvae in the laboratory, but not in the field.
A later investigation in Java (Froggatt 1928b) failed to reveal any egg
parasites, but P. javanus and C. ferruginosus were recorded, as well as two
other species of Histeridae, one probably Plaesius (= Hyposolenus)
laevigatus, one or two species of Staphylinidae and two species of
Hydrophilidae (all Coleoptera). Several species of Dermaptera were fairly
common in the rotting banana plant. In southern China (Yunnan Province)
two Dermaptera (one a forficulid) are reported to eat C. sordidus larvae and
pupae, and a mite to attack larvae and adults; also a white muscardine fungus
to infect 1% of larvae and pupae (Sun 1994).
The only detailed study in recent times of the natural enemies of
C. sordidus is that of Koppenhšfer et al. (1992) in Kenya. Not surprisingly,
the species (of predators) recorded were all polyphagous, since many were
native species that had come to include an introduced pest amongst their
prey. Twelve predators of eggs, larvae and pupae of C. sordidus were found.
None of these attacked adults and no parasitoids were recorded
(Koppenhšfer et al. 1992). Of these predators, the hydrophilid beetle
Dactylosternum abdominale reduced weevil numbers in suckers by up to
50% and in residual stumps of harvested suckers by 39%. In spent
pseudostems, D. abdominale reduced numbers by 40% to 90% at different
predator densities and the large staphylinid predator Thyreocephalus
interocularis reduced numbers by 42%. Other predators (Table 4.5.1) were
unimportant (Koppenhšfer and Schmutterer 1993).
These particular predators are clearly non-specific, since they are native
to East Africa and C. sordidus is not. Thus, although they may be attractive
candidates for introduction (and Plaesius javanus was in this same
category), the widely held view now is that, because of their impact on nontarget organisms, very careful consideration should be given before any
highly non-specific predators are introduced to a new region.
Extensive testing has been carried out of fungi (Metarhizium anisopliae
and Beauveria bassiana) and of entomopathogenic nematodes
(Heterorhabditis spp. and Steinernema spp.) as biological ÔpesticidesÕ
against C. sordidus. Laboratory or field trials showed that strains of both

94

Biological Control of Insect Pests: Southeast Asian Prospects

fungi were capable of killing adults and larvae (Delattre and Jean-Bart 1978;
Filho et al. 1987; Busoli et al. 1989; Castineiras et al. 1991a,b; Pea and
Duncan 1991; Ponce et al. 1992; Brenes and Carballo 1994; Carballo and de
Lopez 1994; Pea et al. 1995). In the field the best results were obtained with
13
application of fungi twice a year at a dose of 10 conidia per ha. This
reduced trap catches of adults by 52% and rhizome damage by 65%, leading
to a 25% yield increase. Parallel experiments with 9 colonies per ha of the
predatory ant Pheidole megacephala yielded similar results (Castineiras et
al. 1991a,b).
Early laboratory tests in Guadelupe by Laumond et al. (1979) showed
that C. sordidus is susceptible to the entomopathogenic nematode
Steinernema carpocapsae (= S. feltiae), an observation since widely
confirmed in Central America for this and other nematode species (e.g.
Figueroa 1990; Pea and Duncan 1991). However, the most extensive recent
work has been carried out in Australia and Tonga. Twenty-one different
species of Steinernema and Heterorhabditis, 7 strains of Steinernema carpocapsae, 2 of S. feltiae, 4 of H. bacteriophora and 2 of
H. zealandica were tested against adult banana weevils. The best of these,
S. carpocapsae BW strain, gave 85% infection in the laboratory (Parnitzki et
al. 1990, 1998; Treverrow et al. 1991). Adult C. sordidus are highly resistant
to entomopathogenic nematodes, due to the difficulty of nematodes entering
the host via the mouth or anus. The large spiracles of the first abdominal
segment offer an effective site of entry for the nematodes if they are able to
pass under the tightly fitting elytra. By adding paraffin oil to the nematode
preparation to seal the elytra, the beetle is caused to raise them slightly to
respire, simultaneously giving the nematodes access to the spiracles. Adult
weevils are strongly attracted to holes or cuts in the rhizome or psuedostem,
but they require a thigmotactic stimulus to remain long enough to become
infected by nematodes. If a core of tissue is removed from two sites at the
base of a residual corm using a desuckering tool, 250000 nematodes
(S. carpocapsae BW) added to each hole and the core loosely inserted,
nearly all adult weevils attracted are killed. In one large scale field trial in
New South Wales 8% of plants in untreated plots suffered significant
damage, 3% when prothiophos was added to the core, 1% when nematodes
were added and 0% when prothiophos was applied to the soil around the base
of the plant. It was concluded that control of banana weevil using
entomopathogenic nematodes should now be economically feasible
(Treverrow and Bedding 1992, 1993a,b). More recently, Treverrow (1994)
has found that baiting, and stem injection with very small amounts of
insecticide, can reduce treatment costs to less than 1 cent per stool. This
makes nematode applications against adults uncompetitive unless market

4.5

Cosmopolites sordidus

95

premiums can be obtained for fruit produced in the absence of insecticides.
However, targetting the highly susceptible larvae instead of the more
resistant adult weevils may significantly reduce the costs of nematode
applications. Applications of S. carpocapsae with a water-absorbing
polyacrylamide gel into cuts or holes made in residual rhizomes gave
significant mortality of C. sordidus larvae (Treverrow et al. 1991; Treverrow
and Bedding 1993b). However, mortality at this stage may have limited
effect on abundance, since a survey of 50 properties showed that 70% of
adult weevils had already emerged from pre-harvest corms (Treverrow and
Bedding 1993a; Treverrow 1994). The importance of correct formulation for
the nematodes is highlighted by the disappointing results obtained in
Queensland, when an earlier formulation without a water-absorbing gel
failed to give effective control of adults, possibly due to the accumulation of
excess water in the core holes (Smith 1993).

Attempts at biological control
FIJI
C. sordidus became a very destructive pest of bananas following its
introduction about 1901 and this led to the first attempt at its biological
control. This consisted of the introduction of the predatory histerid beetle
Plaesius javanus into Fiji in 1913 from Java (Jepson 1914). This was
unsuccessful (Table 4.5.2), but a further introduction in 1918 led to its
establishment (Veitch 1926; Bennett et al. 1976). Simmonds (1935) reported
a marked reduction in weevil damage, an opinion supported by Anon.
(1935), but Pemberton (1954) considered that only partial control had been
achieved. It now seems probable that, in addition to P. javanus, the similar
looking histerid Plaesius laevigatus was also introduced, at least to Cook Is
(Walker and Deitz 1979).

AUSTRALIA
Cosmopolites sordidus is thought to have become established in Queensland
about the end of the 19th century, having arrived possibly from Papua New
Guinea, but it was not until about 1914Ð15 that it reached New South Wales
as a result of an accidental introduction from Fiji (Wilson 1960). Following
its successful introduction into Fiji, Plaesius javanus was introduced from
Java and liberated in Queensland from 1921 to 1928, but became established
only briefly. It was introduced into New South Wales in 1922 from Java and
again in 1934 from Fiji, but again it did not become established. The fly
Chrysopilus ferruginosus was also introduced from Java, but failed to
become established.

96

Table 4.5.2

Introductions for the biological control of Cosmopolites sordidus
Liberated

From

Result

Reference

Plaesius javanus

1921Ð28

Java

Ð

Chrysopilus ferruginosus
Dactylosternum hydrophiloides

1934
1928
1939

Fiji
Java
Malaysia

Ð
Ð
+

Clausen 1978
Weddell 1932
Wilson 1960
Wilson 1960
Smith 1944; Wilson 1960

1952
1952

Trinidad
Trinidad

Ð
Ð

Bennett et al. 1976
Bennett et al. 1976

1937Ð40
1937Ð40

Fiji
Fiji

+
+

Walker & Deitz 1979
Walker & Deitz 1979

Ð

Sirjusingh et al. 1992

CAMEROON
Plaesius javanus
Hololepta quadridentata

COOK IS
Plaesius javanus
Plaesius laevigatus

CUBA
Plaesius laevigatus

DOMINICA
Plaesius javanus
Hololepta quadridentata

1951
1958Ð59
1951
1958Ð59

Trinidad
?
Trinidad
?

Ð
Ð
Ð
Ð

Cock 1985
Clausen 1978
Cock 1985
Clausen 1978

1913
1918
1918

Java
Java
Java

Ð
+
+

Jepson 1914
Veitch 1926
Walker & Deitz 1979

FIJI
Plaesius javanus
Plaesius laevigatus

Biological Control of Insect Pests: Southeast Asian Prospects

Country and species
AUSTRALIA

Table 4.5.2 (contÕd) Introductions for the biological control of Cosmopolites sordidus
Country and species
FRENCH POLYNESIA

Liberated

From

Result

Reference

Plaesius javanus

1937

Fiji

+

Delobel 1977

1949, 1951
1949, 1951

Trinidad
Trinidad

Ð
Ð

Cock 1985
Cock 1985

1942

?

Ð

Greathead 1971

Plaesius javanus

1918Ð19
1937Ð38

Java
Java via Fiji

Dactylosternum hydrophiloides

1918Ð19
1937Ð38
1937Ð38

Malaysia
Malaysia
Malaysia

Ð
+
Ð
Ð
+
Ð

Cock 1985; Edwards 1934
Cock 1985
Sirjusingh et al. 1992
Edwards 1934
Edwards 1934
Edwards 1934

1947
1953
1953
1953

Fiji
?
?
Trinidad

+
Ð
Ð
Ð

Clausen 1978
Clausen 1978
Clausen 1978
Clausen 1978

1959
?
1942
1959

Trinidad
Trinidad
Trinidad
?

Ð
Ð
Ð
Ð

Bennett et al. 1976
Gomy 1983
Bennett et al. 1976
Clausen 1978

GRENADA
Hololepta quadridentata
Plaesius javanus

HONDURAS
Plaesius javanus

JAMAICA

Plaesius javanus
Hololepta quadridentata
Hololepta minuta
Hololepta sp.

MAURITIUS
Plaesius javanus
Hololepta quadridentata

Cosmopolites sordidus

MARIANAS

4.5

Dactylosternum abdominale

97

98

Table 4.5.2 (contÕd) Introductions for the biological control of Cosmopolites sordidus
Country and species
MEXICO

Liberated

From

Result

Reference

Plaesius javanus

1955

?

+

Barrera & Jiminez 1994;
Greathead 1971

1949

Fiji

+

Dumbleton 1957

1948
1953

Malaysia
?

Ð
Ð

Dumbleton 1957
Dumbleton 1957

1936

?

Ð

Greathead 1971

1957

Fiji

+

Dale and Herring 1959

1952
1952

Trinidad
Trinidad

Ð
Ð

Greathead 1971
Greathead 1971

1950Ð1954
1950Ð1954

Trinidad
Trinidad

Ð
Ð

Cock 1985
Cock 1985

1950Ð1954
1942
1981

Trinidad
Trinidad
Trinidad

Ð
+
Ð

Cock 1985
Bennett et al. 1976
Cock 1985

NEW CALEDONIA
PALAU IS
Dactylosternum hydrophiloides
Hololepta sp.

PUERTO RICO
Plaesius javanus

SAMOA
Plaesius javanus

SEYCHELLES
Plaesius javanus
Hololepta quadridentata

ST LUCIA
Hololepta quadridentata
Plaesius javanus

ST VINCENT
Dactylosternum subdepressum
Hololepta quadridentata
Plaesius javanus

Biological Control of Insect Pests: Southeast Asian Prospects

Plaesius javanus

Table 4.5.2 (contÕd) Introductions for the biological control of Cosmopolites sordidus
Country and species
TAIWAN

Liberated

From

Result

Reference

Plaesius javanus

1938

?

Ð

Greathead 1971

1948

?

Ð

Greathead 1971

1952

Fiji

Ð
+

Dumbleton 1957
O. Fakalata pers. comm.

1942

Jamaica

+
Ð

Bennett et al. 1976
Sirjusingh et al. 1992

1934Ð35

Java

Ð

Greathead 1971

?

?

?

Anon. 1979a

1947

Fiji

?

Cohic 1959

TANZANIA
Plaesius javanus

TONGA
Plaesius javanus

TRINIDAD
Plaesius javanus

UGANDA
4.5

Plaesius javanus

VANUATU
WALLIS IS
Plaesius javanus

Cosmopolites sordidus

Plaesius javanus

99

100

Biological Control of Insect Pests: Southeast Asian Prospects

The predatory hydrophilid beetle Dactylosternum hydrophiloides from
Malaysia was liberated in 1939 and has become established but has not had a
major effect on weevil abundance (Wilson 1960).
Braithwaite (1958) reports an unusual native predator of C. sordidus, a
blue planarian worm Kontikia (= Geoplana) caerulea, which lives in moist
sheltered situations. It sucks out the body fluids of its prey, leaving the
cuticle intact.
CAMEROON, MAURITIUS, SEYCHELLES, UGANDA
Both P. javanus and Hololepta quadridentata were supplied from Trinidad
to Cameroon (1952), Mauritius (1959) and the Seychelles (1950Ð54) and
P. javanus from Java to Uganda in 1934Ð35. Neither species became
established (Greathead 1971).
COOK IS
Although only Plaesius javanus is recorded as having been introduced from
Fiji into the Cook Is during the period 1937 to 1940, voucher specimens
(DSIR, NZ) show that Plaesius laevigatus was also present in the material
liberated and both species still occur in the Cook Is, although the latter does
not appear in voucher specimens in Fiji. Unfortunately the banana weevil
borer is still an important problem (Walker and Deitz 1979; Waterhouse
1995, 1997).
CUBA
In Cuba the ant Tetramorium bicarinatum (= T. guineense) was found to be
capable of destroying up to 65% of C. sordidus in heavily infested
plantations. With lower populations, 73.8% and 83.5% control was obtained
in successive years. For colonisation of a plantation in 3 to 4 months, ants
should be released over 25% to 30% of the area (Roche and Abreu 1983).
The ant is a more effective predator during the dry than the wet season
(Lopez and Ramos 1986). In countries where this widespread ant is already
present (e.g. the Americas, Africa, Papua New Guinea, Australia, the
oceanic Pacific) it might well be considered for manipulating C. sordidus
abundance, but very careful consideration should be given to any proposal to
introduce such an agressive broad-spectrum predator into a new country.
INDIA
The predatory beetle Dactylosternum hydrophiloides was introduced from
Malaysia in 1948, but there is no record of the outcome (Whilshaw 1949).
JAMAICA
Although an initial release in 1918Ð19 of Plaesius javanus from Java was
unsuccessful, this predator became established as a result of a further release
of Fijian material in 1937Ð38 (Bennett et al. 1976). More recently Sirjusingh
et al. (1992) recorded that it was no longer present.

4.5

Cosmopolites sordidus

101

MYANMAR
There do not appear to be any records in Myanmar of natural enemies of
C. sordidus which is very uncommon and apparently confined to aromatic
and sweet-flavoured banana varieties. Control is achieved by cutting the
pseudostems every three years, a practice readily accepted because the stems
are used in Mohinga, a popular fish soup (H. Morris pers. comm. 1994).
PAPUA NEW GUINEA
Bananas are grown widely and are the staple food in some areas but
C. sordidus is not a serious pest. The ant Tetramorium bicarinatum occurs
there but there is no information on any possible interaction with C. sordidus
(J.W. Ismay pers. comm. 1985).
TRINIDAD
P. javanus was established in Trinidad in 1942 and, from there, together with
a native histerid Hololepta quadridentata, it was sent to other islands in the
West Indies. Evidence of establishment was not available to Simmonds
(1958) but, in 1972, H. quadridentata was recovered in St Vincent (Bennett
et al. 1976).
OTHER COUNTRIES
Although details are not available, P. javanus has been widely distributed
and is reported to be established in French Polynesia, Marianas, New
Caledonia (where chemical control is still required) (Delobel 1977; Clausen
1978; M. Kauma pers. comm. 1985) and Tonga (O. Fakalata pers. comm.
1985). It is also widespread on Upolu Is, Samoa (T.V. Bourke pers. comm.
1986).
In addition to the records in table 4.5.2, Sirjusingh et al. (1992) list a
number of predators for Central or South America (Table 4.5.3). However, it
is seldom clear which of these may be introductions (intentional or
otherwise) from elsewhere and which are native to the region, as some
almost certainly are. Their biological control potential has not been assessed.

102

Table 4.5.3

Biological Control of Insect Pests: Southeast Asian Prospects

Additional natural enemies of C. sordidus in Central and
South America

Insect
DERMAPTERA
LABIIDAE
Carcinophora (= Psalis) americana
Euborellia annulipes

Country

?Native

Brazil
Brazil

probably
?

Brazil

probably not

Brazil

probably not

Brazil

probably not

Brazil

probably not

Florida
Florida

probably
probably

St Vincent
Brazil
Brazil

possibly
probably
probably not

Trinidad
Trinidad
Trinidad
Trinidad
Brazil

probably not
probably not
probably not
probably
probably not

Brazil

(not established)

Brazil
Brazil
Brazil

(not established)
probably not
(not established)

Brazil

(not established)

HEMIPTERA
CYDNIDAE
Geotomus pygmaeus
MIRIDAE
Fulvius nigricornis
NABIDAE
Phorticus pygmaeus
REDUVIIDAE
Physoderes curculionis

COLEOPTERA
CARABIDAE
Galerita bicolor
Scarites spp.
HISTERIDAE
Hololepta spp.
Lioderma sp.
Platysoma abrupta
HYDROPHILIDAE
Dactylosternum abdominale
D. hydrophiloides
D. intermedium
D. profundus
Omicrogiton insularis
SILVANIDAE
Cathartus sp.
STAPHYLINIDAE
Belonuchus ferrugatus
B. quadratus
Priochirus (= Leptochirus) unicolor

DIPTERA
RHAGIONIDAE
Chrysopilus sp.

4.5

Cosmopolites sordidus

103

Biology of main natural enemies
Dactylosternum abdominale Col.: Hydrophilidae
This is the most effective predator in Kenya. Its larvae are polyphagous
predators and consume the contents of C. sordidus larvae and at high
predator density may become cannibalistic. They also feed on the microfauna and micro-flora of decomposing plant tissues. On the other hand, the
adults cause significant mortality of C. sordidus eggs; although many are
laid in inaccessible positions inside the pseudostem and the polyphagous
adults do not specifically search for eggs. Adults cannot penetrate the
narrow tunnels of young larvae, so can only capture newly hatched larvae:
later instar larvae are not attacked (Koppenhšfer and Schmutterer 1993;
Koppenhšfer et al. 1992, 1995). Development from egg to adult takes 17 to
33 days, life span is 95 days and females lay an average of 1.7 egg cases per
week, each case containing 4 eggs. The preoviposition period is 16.6 days
(Koppenhšfer et al. 1995).

Geotomus pygmaeus Hem.: Cydnidae
This predator is recorded from India, Ceylon, Myanmar, Indonesia,
Vietnam, China, Japan, New Caledonia, Fiji, Samoa, French Polynesia and
Hawaii. Its extensive distribution is probably due to its ready transportation
in the soil attached to the roots of cultivated plants. Although reported to
attack C. sordidus eggs in Malaysia, China (1935) suggests that this species
normally is unlikely to be a predator.

Plaesius javanus Col.: Histeridae
The predatory larvae and adults of this Indonesian beetle attack larvae and
pupae of Cosmopolites sordidus and many other soil and litter-inhabiting
insects. Eggs are laid singly in old banana stumps, at the base of the stem and
on the rhizome below the soil surface. The eggs hatch in 8 to 9 days,
producing active, voracious larvae which feed for 5 to 6 months, older larvae
being capable of consuming up to 30 or more C. sordidus larvae per day. A
prepupal period of 10 to 15 days is passed in a pupation cell constructed in
the soil, followed by a pupal stage of about 14 days. The adult remains in the
cell for 7 to 10 days before emerging and is then capable of consuming 7 or 8
weevil larvae per day (Clausen 1978; Jepson 1914; Weddell 1932).

Thyreocephalus interocularis Col.: Staphylinidae
This is the second most effective predator on C. sordidus larvae in Kenya.
Both adults and larvae are polyphagous. In the absence of other hosts adults
may prey on their own larvae and larvae are also occasionally cannibalistic
(Koppenhšfer and Schmutterer 1993). After a pre-oviposition period of 32
days, females lay an average of 31 eggs in decomposing banana

104

Biological Control of Insect Pests: Southeast Asian Prospects

pseudostems and in moist soil below banana mulch. Pupation occurs in the
soil. Total development time averages 46 days and adults live an average of
142 days (Koppenhšfer 1994).

Comments
Although weevils, as a group, seem to be poor candidates for biological
control, the establishment of Plaesius javanus and P. laevigatus in Fiji
appears to have reduced the pest status of Cosmopolites sordidus there.
Introductions of P. javanus (Table 4.5.2) have resulted in successful
establishment (but often not at the first attempt) in Cook Is, French
Polynesia, Jamaica, Marianas, Mauritius, New Caledonia, Samoa and
Trinidad, but no information is available on the effects it has produced.
Introductions have been unsuccessful in Australia, Cameroon, Dominica,
Honduras, Mauritius, Mexico, Puerto Rico, Seychelles, St Lucia, St Vincent,
Taiwan, Tanzania, Tonga and Uganda (Bartlett 1937; Miwa 1938; Clausen
1978). Based on his observation and that of others, Koppenhšfer (1993a,b,
Koppenhšfer and Schmutterer 1993) considered that the biology of
P. javanus does not enable it to have any greater effect and that studies are
necessary of the potential impact of proposed predator species before
release. Two other predators have been established, one in Australia and one
in Jamaica and St Vincent, but seemingly without much effect.
If the beneficial effects of P. javanus (and P. laevigatus) in Fiji can be
confirmed, it may be worth renewing efforts to establish them in other
countries where C. sordidus is a major pest. Otherwise, resources available
for biological control might be better deployed searching for, and
evaluating, other natural enemies.
It is possible that entomopathogenic nematodes (CSIRO 1993;
Treverrow and Bedding 1993a) or fungi may hold some promise as
biological pesticides. Nematodes generally have far less capability for selfperpetuation and dispersal in the environment than imported arthropod
enemies, but they can be highly effective. However, in many tropical
countries where bananas are a major staple food the distribution and
application of mass-produced biological control agents, such as nematodes
or fungi, is often impracticable because of storage and transport problems
and lack of suitable equipment for application. In addition, like insecticides,
they may be too costly for subsistence farmers who constitute the majority of
banana producers. Even if it only leads to a partial (but still significant)
reduction in pest status, classical biological control is, under these
circumstances, a particularly appropriate approach to reduce losses.

105

4.6

Deanolis sublimbalis

China

++

India

+
Taiwan

Myanmar
20°

Laos

20°

++

Thailand

Philippines

+

Cambodia
Vietnam
P
Brunei
Malaysia




Singapore

+
Papua
New Guinea

P
Indonesia

++

20°

Australia

20°

The red banded mango caterpillar, Deanolis sublimbalis tunnels in the flesh and seed of the
fruit of mango, Mangifera indica, and also attacks the fruit of M. odorata, M. minor and
Bouea burmanica. It is reported from India eastwards to Southeast Asia, southern China
and Papua New Guinea. In this vast region there are scattered reports of damage ranging
up to 50 per cent of fruit, but many areas within it from which there are no reports of damage
or even of its presence.
The only records of natural enemies are of two trichogrammatid egg parasitoids and a
vespid larval predator, all in the Philippines. Further searches would be necessary before
the potential of classical biological control could be evaluated, especially for infestation in
new areas into which it has spread in recent years.

106

Biological Control of Insect Pests: Southeast Asian Prospects

Deanolis sublimbalis Snellen
Lepidoptera: Pyralidae: Odontinae
red banded mango caterpillar, red banded borer

Synonyms
Long known as Noorda albizonalis Hampson 1903 or Autocharis
albizonalis (Hampson), this species should be referred to as Deanolis
sublimbalis Snellen, because of the priority of its description (Snellen 1899)
(M. Shaffer pers. comm. 1997) from specimens collected in Celebes (now
Sulawesi). He also referred to two females from Batavia (now Jakarta).
HampsonÕs type specimen (Hampson 1903), labelled Darjiling, is in the
British Museum (Natural History) (BMNH); and the distribution of his
species was given as Sikkim; Celebes, Palos B., Dongola (Doherty).
Dongola is currently spelt Donggala and is at the southern headland of Palos
bay at the head of which is Palu. DohertyÕs obituary (Hartent 1901) reveals
that he collected there in August and September 1896.

Rating
Southeast Asia
3

++
+
P

Phil
Thai
Brun, Indo

China
2

++

Yunnan Province

Pacific
2

++

PNG

Origin
The origin of mango (Mangifera indica) is believed to be in the IndiaMyanmar region, from which it might be inferred that D. sublimbalis also
evolved within this region, unless it has transferred to M. indica from a
related plant.

Distribution
India, Myanmar, Thailand, China (Yunnan Province: Li et al. 1997), Brunei,
Philippines, Indonesia (Java, Sulawesi, Irian Jaya), Papua New Guinea,
Torres Strait (Dauan Is, Saibai Is: AQIS 1991; NAQS 1993) (Fenner 1987;
Singh 1987).
It is apparently not known in Pakistan (M.A. Poswal pers. comm. 1997),
Sri Lanka (J. Edirisinghe pers. comm. 1997), Nepal (Neupane 1995) or
Peninsular Malaysia (Yunus and Ho 1980; Tan Chai-Lin pers. comm. 1997)
and does not occur on the Australian mainland or in the oceanic Pacific. It is

4.6

Deonalis sublimbalis

107

widely distributed throughout Papua New Guinea coastal mainland and
islands (F. Dori pers. comm. 1997).
Specimens in the BMNH carry the following labels
India:
Darjiling (now Darjeeling)
Calcutta 22 March, 1945
Orissa March, 1952
Myanmar:
Rangoon March, 1923
Thailand and Philippines:
no dates
Brunei:
12 April, 1973, 5 September 1992
Indonesia:
Java August, 1922 (Koepoedan) Sulawesi
(Minahassa, Tomohon).
Irian Jaya July, 1936 (Cyclops Mts,
Sabron 2000ft)
Papua New Guinea:
Kokoda August, 1933;
and in the Australian National Insect Collection the following labels:
Papua New Guinea:
Finisterre Range 23 JuneÐ21 July, 1958
(Gabumi, 2000ft)
Telefomin 2 May and 18 June, 1959
(Feramin 4700ft) 2 MayÐ18 June
Port Moresby 5 MarchÐ12 May, 1963
(Mt Lawes 1300ft)

Biology
Referring presumably to the major (summer) crop of mangos, Fenner (1987)
and Golez (1991a) comment that the eggs are oval, waxy white and
generally laid in masses near the apex of the developing fruit. However
F. Dori (pers. comm. 1997) reports that, in the winter (July) crop near Port
Moresby (PNG), eggs were white to crimson. They were laid in groups of 1
to 4 near or on the peduncle at the base of the fruit and sometimes covered by
the sepals or deposited in small crevices in the fruit. On hatching, larvae
travel to the apex to enter the fruit. Oviposition occurs as early as 45 to 55
days after flower induction and continues up to fruit maturity. After an egg
incubation period of 3 to 4 days, larvae hatch and pass through 5 instars in
the next 14 to 20 days. The larva has a brown or black head and white body
with red segmental bands. It feeds first in the pulp of the fruit (1st and 2nd
instars) and later in the seeds. The tunnels formed gradually broaden as the
larvae grow to about 2 cm in length. Fruit in all stages of development from
marble size upwards are attacked. As many as 11 larvae may be found in a
fruit, although there is commonly only one. A pre-pupal stage lasts about 2
to 3 days and pupation occurs in a silk-lined earthern cocoon. In wooden

108

Biological Control of Insect Pests: Southeast Asian Prospects

cages in Papua New Guinea, larvae pupated in strongly spun cocoons
covered with particles of chewed wood, suggesting that pupation on bark
may occur in the field. In India, Sengupta and Behura (1955, 1957) record
pupation generally inside the fruit, the moth emerging through an exit hole.
The pupal period lasts from 9 to 14 days, so that the total period from egg to
adult takes from 28 to 41 days. Adult longevity is 8 to 9 days. Adult males
can be distinguished from females by having expanded dark brown, hairy,
mesothoracic tibiae (Leefmans and Van der Vecht 1930; Vožte 1936;
Kalshoven 1981; Fenner 1987, 1997; Golez 1991a).
Adults are generally nocturnal and, during the day, spend most of their
time resting under leaves on the tree. They are seldom attracted to light.
Females prefer to oviposit on fruit protected from direct light. Newly
hatched larvae stay together and tunnel into the fruit near where the eggs
were laid. If later instar larvae are crowded, some may leave by suspending
themselves on silken threads, which also facilitate transfer to other fruits. A
shorter developmental period was observed for both males and females
reared on the pulp than on the seed of carabao mangoes, although those
reared on the seeds were larger and lived longer, females producing more
eggs. Development differed slightly on different mango varieties (Golez
1991a).
In cages in Papua New Guinea only a small proportion of pupae yielded
adults in the several months after pupation, suggesting a pupal diapause
which may synchronise the life cycle with the seasonal fruiting of its host
(Fenner 1987, 1997).

Host plants
The commonest host, wherever D. sublimbalis occurs, is Mangifera indica,
but there are records also from M. odorata in Papua New Guinea and
Indonesia from M. minor in Papua New Guinea (F. Dori pers. comm. 1997).
and from Bouea burmanica in Thailand (Beller and Bhenchitr 1936). All
four belong to the family Anacardiaceae (Sengupta and Behura 1955;
Kalshoven 1981; M. Schaffer pers. comm. 1997). Larvae are unable to
develop on parts of the mango tree other than the fruit, or in the fruit of
avocado, chico, guava, jackfruit, papaya, santol, sineguelas or star apple
(Golez 1991a). However, as the genus Mangifera contains many species it is
quite possible that further wild hosts will be found (Fenner 1997). Indeed the
label data, quoted earlier, on specimens collected well outside the major
fruiting season of M. indica suggests that this may well be so. The genus
Mangifera contains about 62 species of tall evergreen trees which are native
to the area stretching from India to Papua New Guinea, with the greatest

4.6

Deonalis sublimbalis

109

number in the Malay Peninsula. Fifteen species bear edible fruit, but only
M. indica is widely planted of the 6 species sometimes cultivated. M. indica
probably originated in the Indo-Myanmar region and grows wild in the
forests of India, particularly in hilly areas in the northeast. It has been grown
throughout the Indian sub-continent for at least 4000 years. It was probably
taken to Malaysia and eastwards further into Southeast Asia between 300
and 400 AD and there are now many commercial varieties (Purseglove
1968).

Damage
Mango fruit in all stages of development are attacked, often leading to
premature drop. First and second instar larvae feed on the tissues beneath the
skin, making tunnels towards the seed. Larger larvae destroy the seed. Soon
after boring starts, secondary infestations of bacteria, fungi, fruit flies (e.g.
Bactrocera ferrugineus, B. frauenfeldi), and other pests occur. Liquid
exudes from the skin of attacked fruit at the opening of the entry tunnel and
trickles down to the drip point where it accumulates. It rapidly darkens to
form a characteristic black spot, often about 1cm in diameter at the tip of the
fruit (Fenner 1987). Another common sign of borer damage is the bursting of
the apex and longitudinal cracking of the fruit. In Guimaras Province
(Philippines), up to 12.5% fruit infestation was recorded by Golez (1991a),
with up to 14.5 larvae occurring per kg fruit. In years of serious infestation,
yield could be reduced by as much as 40 to 50 per cent (Tipon 1979). In
Papua New Guinea, fruit infestation levels of greater than 20% are
encountered in the Port Moresby area (F. Dori pers. comm. 1997; T.L.
Fenner pers. comm. 1997). In India the seeds are used as human food in
times of famine and a flour is made from them (Purseglove 1968).
However, for an insect that can be significantly damaging to mango fruit,
it is remarkable that there are so very few references to it in the literature. It
is, perhaps, instructive to list those that are directly relevant, so as to
contribute to determining (i) whether it has, for many years, frequently been
overlooked as a pest, (ii) whether it has spread to new areas in recent times,
(iii) whether it has only become a pest of edible mangoes in recent times, (iv)
whether suppression by natural enemies is no longer as effective as it once
was and/or (v) whether there are other reasons.
D. sublimbalis must have been present in northern India before it was
described in 1903 (Hampson 1903), although it was not mentioned in the
books by Maxwell-Lefroy and Howlett (1909), Fletcher (1914) or Ayyar
(1963) all dealing with insects of agricultural importance in India. It was,
however, reported a little later by Wadhi and Batra (1964) who referred to

110

Biological Control of Insect Pests: Southeast Asian Prospects

papers by Sengupta and Behura (1955, 1957) and Sengupta and Misra
(1956). It was also reported, briefly, by Nair (1975) and, in more detail, by
Butani (1979). Strangely, the above Sengupta and Behura (1955) reference
lists D. albizonalis among new records of crop pests in Orissa and then only
of grafted mangoes in Puri District, implying that it was not known much
earlier there as a damaging species. Furthermore, only recently
(Zaheruddeen and Sujatha 1993) was D. sublimbalis recorded as having
caused serious losses to mango fruits from marble size to maturity in
Godavari Districts of Andhra Pradesh.
Although a specimen was collected in Rangoon in 1923 (BMNH),
D. sublimbalis was not listed by Ghosh (1940) in his major work ÔInsect
Pests of BurmaÕ or by Yunus and Ho (1980) in Malaysia when dealing with
economic pests from 1920 to 1978. This striking absence of records from
peninsular Malaysia continues to this day (Tan Chai-lin pers. comm. 1997).
Nevertheless, D. sublimbalis has been well known in Thailand since 1936
(Beller and Bhenchitr 1936; Cantelo and Pholboon 1965; Wongsiri 1991;
Kuroko and Lewvanich 1993).
In the Philippines it was not recorded by Cendana et al. (1984) in ÔInsect
Pests of Fruit Plants in the PhilippinesÕ, so it was evidently not generally
regarded as a pest at that time, although a paper recording 40 to 50% damage
in bad years had been delivered 5 years earlier (Tipon 1979). A
comprehensive account of up to 12.5% infestation of fruit in Guimaras
Province was published in 1991 by Golez (1991a,b).
In contrast, in Indonesia it was present prior to 1899 (Snellen 1899) and
has been well known as a mango pest since 1930 (Leefmans and van der
Vecht 1930). Its damaging presence there is also documented by Vote
(1936) and Kalshoven (1981).
D. sublimbalis has been known in Irian Jaya since 1936 (BMNH
specimen) and was common in mangoes in Jayapura in the early nineties
(T.L. Fenner pers. comm. 1997). It was collected in Papua New Guinea
(Kokoda) in 1933 (BMNH specimen) and was recorded again in 1958, 1959
and 1963 (ANIC specimens) and is common nowadays in Port Moresby. It
was first recorded on Australian islands in Torres Strait (Saibai I) in 1990
and again in October 1996 (at a level of about 1% infestation on Dauan I)
(Australian Quarantine Inspection Service).

4.6

Deonalis sublimbalis

111

Natural enemies
Leefmans and van der Vecht (1930) commented that no parasites had been
bred in their studies on D. albizonalis in Java.
In Luzon (Philippines) the egg parasitoids Trichogramma chilonis and
T. chilotraeae (Table 4.6.1) were recorded by Golez (1991a) who reported,
however, that no parasitoids were encountered at that time in the three
municipalities of Guimaras, all of which had dry, dusty and windy
conditions.
Golez (1991a) reported that predation in Guimaras occurs as larvae leave
the fruit, either to migrate to another fruit or to pupate in the soil. The most
important predator was the vespid Rhychium attrisium which appeared to be
the main cause of the high larval disappearance that occurs. R. attrisium is
abundant in summer, especially during warm sunny days.
Larvae were attacked by a fungus in the laboratory in Indonesia
(Leefmans and van der Vecht 1930). The wasp Evania appendigaster is
reported as a larval/pupal parasite (Golez 1991b), but Fenner (1997) points
out that this record needs confirmation since the Evaniidae are reportedly all
parasites of cockroach eggs.
A tachinid, Carcelia (Senometopia) sp., was reared from mango fruit
possibly infested with D. sublimbalis near Nodup in September 1982
(J. Ismay pers. comm. 1997) and also from a D. sublimbalis larva near
Rabaul (both Papua New Guinea) in 1984 (F. Dori pers. comm. 1997).

Table 4.6.1

Natural enemies of Deanolis sublimbalis

Species
DIPTERA

Location

Reference

Rabaul (PNG)

F. Dori pers. comm. 1997

Philippines
Philippines

Golez 1991a
Golez 1991a

TACHINIDAE
Carcelia sp.

HYMENOPTERA
TRICHOGRAMMATIDAE
Trichogramma chilonis
Trichogramma chilotraeae
EVANIIDAE
Evania appendigaster
VESPIDAE
Rhychium attrisium

Golez 1991b
Philippines

Golez 1991a

112

Biological Control of Insect Pests: Southeast Asian Prospects

Comment
It is tempting to postulate that the damage that is actually due to the red
banded mango caterpillar is commonly attributed to other causes. Perhaps
this is due, in part, to the fact that larvae have often left the fruit before the
cause of damage is investigated although, with a larval duration of 2 to 3
weeks, this would be surprising, particularly when there is a characteristic
dark spot for much of this time at the drip point of the mango fruit.
The absence of records of its presence over vast areas within its
distribution range suggests that its abundance must be very low (perhaps due
to inhospitable host varieties or effective biological control) or, perhaps, that
it does not occur there.
The only record of effective chemical control is of 4 applications of
cyfluthrin or deltamethrin at 60, 75, 90 and 105 days after fruit induction
(Golez 1991a).
Further research for natural enemies attacking eggs, larvae and pupae
within its long established range would be necessary to determine whether
any are likely to be promising for biological control.
If, as is very probable, D. sublimbalis produces a sex pheromone, its
availability as a lure would be of great value as a means of monitoring the
presence and distribution of the red banded mango caterpillar in mango and
other hosts. Its identification, synthesis and availability should have high
priority.

113

4.7

Diaphorina citri

China

++

India

Taiwan

Myanmar
P
Laos
20°

+++

20°

++

Thailand
P
Cambodia

Philippines

Vietnam

++

+

Brunei

Malaysia


+



Singapore

+
++

Indonesia

20°

Australia

Papua
New Guinea

20°

The citrus psyllid Diaphorina citri is native to the Indo-Malaysian region, but has spread
outside it to RŽunion, Mauritius, Saudi Arabia, Honduras, and Brazil. The sap it removes
from new flushes of citrus growth is of minor consequence, but it is the vector of a
devastating bacterial disease, citrus greening.
Its major controlling factors are high rainfall (washing off eggs and young nymphs) and
two parasitoids, Tamarixia radiata and Diaphorencyrtus aligarhensis. Where these
parasitoids are native they are very heavily attacked by hyperparasitoids which diminish
their effectiveness. Freed of these hyperparasitoids T. radiata has been established in 3
countries where it was not present: RŽunion, Madagascar and Taiwan, resulting in
excellent biological control. Although T. radiata appears to be widespread in Southeast
Asia, observations might well disclose regions where it is not present and could be
introduced with advantage. The prospects for successful biological control of D. citri are
good when it invades regions where hyperparasitoids of T. radiata are absent or deficient.

114

Biological Control of Insect Pests: Southeast Asian Prospects

Diaphorina citri Kuwayama
Hemiptera, Psyllidae
citrus psyllid, Asian citrus psyllid

Rating
Southeast Asia
8

++
+
P

Viet, Indo, Phil
Msia, Sing
Myan, Thai

China

Southern and Western Pacific

3+++

absent

These Southeast Asian ratings arose from an earlier survey of country
opinions (Waterhouse 1993b) and may not reflect current assessments.

Origin
The Indo-Malaysian region. D. citri was described from Punjab, India
(Waterston 1922). There is evidence of recent spread into the southeastern
and eastern portions of Southeast Asia.

Distribution
D. citri is widespread from Afganistan eastwards through Pakistan, India,
Nepal and Bhutan to Southeast Asia, southern China (up to about 30¡N, Xie
et al. 1988), Taiwan (Catling 1970; Tsai et al. 1984; Aubert 1990) and the
Ryuku Is (Japan) (Miyakawa and Tsuno 1989). It has recently become
established in Ende (Flores) and Timor and in Irian Jaya (Aubert 1989b,
1990). D. citri was collected in June 1993 in the Jayapura area of Irian Jaya
and citrus there showed symptoms of greening (Northern Australia
Quarantine Strategy 1993). It has been introduced to RŽunion, Mauritius,
Comoro Is (Hollis 1987), Saudi Arabia (Wooler et al. 1974), Yemen (BovŽ
1986), Brazil (Silva et al. 1968; Bergmann et al. 1994) and Honduras
(Burckhardt and Martinez 1989). In 1990 there were still limited areas free
of D. citri in east Mindoro (Philippines) and Palau and Tambun (Malaysia).
It is not yet recorded from Papua New Guinea and does not occur in
Australia, the Oceanic Pacific or North America.
In RŽunion it has not colonised citrus plantings above 800 m, where the
lowest temperature is 7¡C, whereas in Malaysia the height limit is 1200 m
with a minimum temperature of 14¡C.

4.7

Diaphorina citri

115

Biology
D. citri survives a wide range of temperature extremes from 45¡C in Saudi
Arabia to Ð7¡ to Ð8¡C in China, thereby tolerating cold that will kill citrus
(Xie et al. 1989a). Far more than temperature, high humidity and rainfall are
important limiting factors, rain by washing off eggs and early instar nymphs
and humidity by favouring fungal attack. These two factors are mainly
responsible for the low D. citri populations on the windward (rainy) side of
Mindoro (Philippines) and RŽunion (Aubert 1989a).
There have been several studies on the life cycle of D. citri, which
conform generally with the results in Table 4.7.1, leading to up to 11
generations a year in Fujian Province, China (Xu et al. 1988b, 1994). D. citri
has a short life cycle and high fecundity and is commonest in hot coastal
areas. Mating commences soon after the insects become adult and, after a
pre-oviposition period of about 12 days, eggs are laid singly inside halffolded leaves of buds, in leaf axils and other places on the young tender
shoots. Average adult lifespan is 30 to 40 days, although overwintering
adults had a lifespan of 260 days (Xu et al. 1994).

Table 4.7.1

Spring
Summer
Autumn
Winter

Bionomics of D. citri (average in days) in Fujian Province,
China (Xu et al. 1988b)
Adult life-span
Max
Min
96
28.1
46
19.7
59
31.6
131Ð165

Eggs per
female
17.7
43.8
22.6

Incubation
10
2
4

Nymphal
EggÐadult
development
31.8
42
10.3
13
16.8
21

The abundance of both eggs and nymphs is correlated with the availability of
new growth flushes and breeding is largely suspended when trees become
dormant. On its favoured host plant Murraya paniculata in Fujian,
populations may average 51 adults per young shoot and a 4-year-old plant
produces 900Ð1000 shoots. On mandarin (Citrus reticulata) the average
colony size is 20 per shoot, with 600 to 650 shoots, and peak abundance
occurs about 6 weeks later than on M. paniculata (Aubert 1990). D. citri
nymphs develop well under cool, humid spring conditions, but are seriously
affected by fungal infections under hot, humid conditions. On
M. paniculata, adult numbers were highest on leaf midveins (43%),
followed by petioles (30.7%), leaf blades (23.7%) and stems (2.6%) (Tsai et
al. 1984).

116

Biological Control of Insect Pests: Southeast Asian Prospects

D. citri nymphs normally lead a sedentary existence clustered in groups,
but will move away when disturbed. Adults are 2.5 mm long and jump when
disturbed, whereupon they may fly up to 5 m before settling again. Seasonal
migratory flights occur when adults fly up to about 7 m above ground level,
entering mild winds which may carry them up to 4 km distant (Aubert 1990).
Flying adults are attracted to yellow traps, which have been used for
sampling (Aubert and Xie 1990). Adult D. citri have yellowish-brown
bodies, greyish-brown legs and transparent wings. They have white spots or
are light brown with a broad, beige, longitudinal, central band.

Host plants
D. citri feeds and breeds on the entire group of horticultural Citrus, with
additional hosts in eight different genera belonging to the Aurantoidea
(Aubert 1990). D. citri thus has a wider host range than the greening
organism it transmits to citrus (see Damage). An indication of the relative
suitability of its various host plants is shown in Table 4.7.2, although there
may be local modifications of the groupings. This is probably due to
different D. citri biotypes. For example, unlike RŽunion populations,
Malaysian populations breed well on Bergera koenigii and, in the
Philippines, adults are more attracted by Clausena anisumolens than by
Murraya paniculata (Aubert 1990). Overall, jasmin orange, Murraya
paniculata, is the preferred host and this plant is widely grown in Southern
and Southeast Asia as an ornamental shrub and hedge plant.

Damage
Although sap removal by large populations of D. citri can cause young
foliage on flushes of growth to wilt, by far the most damaging effect of
feeding is due to the transmission of a gram-negative bacterium which is the
cause of citrus greening, known as huanglungbin in China (Xu et al. 1988a).
Citrus greening is known to affect 3 genera of the subtribe Citrinae, namely
Citrus, Poncirus and Fortunella (Aubert 1990). It has also been
experimentally transferred from Citrus to Madagascar periwinkle
(Catharanthus roseus (Ke 1987). Once infected with the bacterium, D. citri
remains infective for its lifetime, but does not pass on the infection
transovarially. Amongst citrus, pummelo and lemon are less affected by
greening than most other species. D. citri is the only known vector of citrus
greening in Asia, although several other psyllids attacking citrus have been
described: D. auberti (Comoro Is: Hollis 1987), Psylla citricola,
P. citrisuga and Trioza citroimpura (China: Yang and Li 1984) and Psylla
murrayii (Malaysia: Osman and Lim 1990).

Table 4.7.2

Diaphorina citri host plants (after Aubert 1990)

Preferred host plant
Good host plants
Common host plants

Egg laying

Nymphal
development

+++
+++

+++
+++

+++
+++

++

++

++

+
+
+
+
+
+
+

+
+
+
+
+
Ð
Ð

+
+
+
Ð
+
Ð
Ð

4.7

Occasional host plants

Diaphorina citri

Murraya paniculata (jasmin orange)
Citrus aurantifolia (lime)
Bergera (Murraya) koenigii (curry bush)
Citrus limon (lemon)
Citrus sinensis (sweet orange)
Citrus medica (citron)
Citrus reticulata (mandarin)
Microcitrus australisiaca*
Citrus maxima var. racemosa (pummelo)
Citrus hystrix (Mauritius papeda)
Citrus madurensis
Clausena excavata
Clausena lansium
Citrus maxima (pummelo)
Triphasia trifoliata*
Fortunella sp.* (kumquat)
Poncirus trifoliata*
Clausena anisumolens (anise)
Merrillia caloxylon*
Toddalia asiatica*

Leaf sucking

117

Occasional host plants

Citrus species hosts are, according to the classification of Jones (1990):
+++ very common;
++ usual
+ occasional;
Ð complete life cycle not observed
*observations on caged insects

Leaf sucking

Egg laying

Nymphal
development

+
+
+
+
+

Ð
unknown
unknown
unknown
unknown

Ð
unknown
unknown
unknown
unknown

Biological Control of Insect Pests: Southeast Asian Prospects

Vepris lanceolata*
Swinglea glutinesa*
Atalantia sp.
Clausena indica*
Murraya exotica*

118

Table 4.7.2 (contÕd) Diaphorina citri host plants (after Aubert 1990)

4.7

Diaphorina citri

119

In Africa, RŽunion, Madagascar and Saudi Arabia another psyllid Trioza
erytreae transmits a slightly different citrus greening organism (see later
under RŽunion).
Citrus greening is believed to have originated in northeastern
Guangdong Province (Lin and Lin 1990). Amongst other symptoms, the
leaves of new green shoots first turn yellow at their base, then often become
mottled yellow and drop. The branches remain small, upright and stiff.
Diseased trees flower abundantly in the off-season and flowers drop readily
or result in small, irregular fruit whose base turns red before the remainder
changes from green (Ke 1987). Citrus greening is widespread throughout
South and Southeast Asia, where it is almost always the most serious disease
of citrus. It is spread to new areas by infected nursery plants or infected
budwood and within orchards by D. citri (Capoor et al. 1967; Whittle 1992).
However, D. citri has been intercepted by quarantine in France on citrus
imported from Honduras (Burckhardt and Martinez 1989). The tonnage of
citrus produced worldwide is second as a fruit crop only to that of grapes
(Aubert 1987b). An extremely serious citrus disease which already affects
nearly 50 countries in Asia and Africa must, therefore, be regarded as of
major importance. It is reported that a total of over a million trees are
destroyed each year in China, Thailand, Malaysia, Indonesia and Philippines
alone (Aubert 1987a). In Indonesia citrus greening has caused the loss of
many millions of trees. Small farmers are frequently reluctant to remove
declining trees before they almost cease bearing. This tends to increase
D. citri populations, which breed on young flush since a symptom of
greening is unseasonal flushing (Whittle 1992). The recent history of
production in northern Vietnam, where citrus is grown mainly in larger
orchards or state farms, is typically cyclical, with the gradual destruction of
trees by greening and then wholesale removal and replanting. A new cycle of
planting commenced in the late 1980s, but greening is already to be seen in
many young orchards, although populations of D. citri are still low (Whittle
1992). Only by keeping populations at very low levels by biological control
and/or insecticides will the rate of spread of greening be diminished.
Insecticides are said to be highly cost effective if used only during a
restricted flushing period, but if needed frequently they are very costly and
environmentally undesirable. Recent developments with carefully specified,
highly refined petroleum oils has given high levels of control of D. citri
(A. Beattie pers. comm. 1995), with presumably little direct effect on its
parasitoids. Whittle (1992) reported that he was unable to find D. citri in the
vicinity of Ho Chi Minh City (southern Vietnam), a very unusual situation
for an area with a fairly long history of citrus cultivation.

120

Biological Control of Insect Pests: Southeast Asian Prospects

The Asian citrus greening bacterium can withstand high temperatures
and occurs in China, Southeast Asia, India and Saudi Arabia. On the other
hand, Southern African greening, which is transmitted by the psyllid Trioza
erytreae, is heat-sensitive and symptoms do not develop in climates where
temperatures above 30¡C are recorded for several hours a day. In addition to
Southern Africa, this greening occurs also in North Yemen (Garnier et al.
1988).

Natural enemies
Identified natural enemies are listed in Table 4.7.3. There are also reports of
a number of unidentified predators (coccinellids, chrysopids, mantids,
spiders). It is noteworthy that only 2 primary parasitoidsÑboth attacking
D. citri nymphsÑhave so far been recorded, the widespread endoparasitic
encyrtid Diaphorencyrtus aligarhensis and the more restricted ectoparasitic
eulophid Tamarixia radiata, which has been introduced to several countries
for biological control. Both feed on the haemolymph of some hosts, resulting
in their death, as well as using other hosts for oviposition.
Where they occur naturally, both D. aligarhensis and T. radiata are
heavily attacked by a wide range of hyperparasitoids (Table 4.7.4). Of these,
Tetrastichus sp. is the most important for T. radiata, causing an average of
21.8% parasitisation in 1988 (rising to a maximum of 87.9%) and 28.7% in
1989 in Fujian Province, China. Chartocerus walkeri (9.3% in 1988 and
13.2% in 1989) is the most important for D. aligarhensis (Table 4.7.5).
A valuable illustrated guide to the hyperparasitoids associated with
D. citri is provided by Qing and Aubert (1990).

Table 4.7.3

Natural enemies of Diaphorina citri (* indicates introduced to this country)

Species
HYMENOPTERA
ENCYRTIDAE
Diaphorencyrtus aligarhensis
(= Aphidencyrtus diaphorinae
= Diaphorencyrtus diaphorinae
= Psyllaephagus diaphorinae
= Aphidencyrtus aligarhensis)

Reference

India
Vietnam

Shafee et al. 1975; Hayat 1981
Myartseva & Tryapitzyn 1978;
van Lam 1996
Prinsloo 1985
Lin & Tao 1979
Aubert 1984b
Aubert & Quilici 1984, Quilici 1989
Prinsloo 1985; Gavarra & Mercado 1989;
Gavarra et al. 1990
Tang 1989
Nurhadi 1989; Nurhadi & Crih 1987
Lim et al. 1990

Taiwan
Comores Is
RŽunion
Philippines
China
Indonesia
Malaysia
India
RŽunion*
Saudi Arabia
Mauritius*
Nepal
Taiwan*
China
Indonesia
Malaysia
Thailand
Vietnam

121

Waterston 1922; Husain & Nath 1924; Quilici 1989,
Etienne and Aubert 1980
Aubert 1984a
Aubert 1984c
Lama et al. 1988; Otake 1990
Chiu et al. 1988
Liu 1989; Tang 1989; Qing & Aubert 1990
Nurhadi & Crih 1987; Nurhadi 1989
Lim et al. 1990
Qing & Aubert 1990
Myartseva & Trijapitzyin 1978;
van Lam 1996

Diaphorina citri

EULOPHIDAE
Tamarixia radiata
(= Tetrastichus radiatus)

4.7

Region

Species
COLEOPTERA
COCCINELLIDAE
Cheilomenes sexmaculata

Region

Reference

China

Xia et al. 1987

China

Liu 1989

India

Sanda 1991

China
China
China
China

Chen et al. 1990
Xie et al. 1988
Xie et al. 1988
Xie et al. 1988

122

Table 4.7.3 (contÕd) Natural enemies of Diaphorina citri (* indicates introduced to this country)

NEUROPTERA

ARACHNIDA
SALTICIDAE
Marpissa tigrina

FUNGI
Beauveria bassiana
Cephalosporium (= Verticillium) lecanii
Fusarium lateritium
Paecilomyces sp.

Biological Control of Insect Pests: Southeast Asian Prospects

CHRYSOPIDAE
Chrysopa boninensis

Table 4.7.4

Hyperparasitoids of Diaphorina citri (mostly after Tang 1989)

Hyperparasitoid
EULOPHIDAE
Tetrastichus sp.

ENCYRTIDAE
Syrphophagus taiwanus
Ageniaspis sp.
Cheiloneurus sp.
?Psyllaephagus sp.

Reference

T.r. & D.a.
D.a.

China
Taiwan
Philippines

Tang 1989
Hayat & Lin 1988; Chien et al. 1989
Balthazar 1966, unpublished

T.r. & D.a.
T.r. & D.a.
D.a.
D.a.
?
T.r. & D.a.

Taiwan
China
Taiwan
Taiwan
Philippines
China
Philippines

D.a.

China

Hayat & Lin 1988; Chien et al. 1989
Tang 1989
Hayat & Lin 1988; Chien et al. 1989
Hayat & Lin 1988; Chien et al. 1989,
Baltazar 1966, unpublished
Tang 1989
Balthazar 1966, unpublished
Tang 1989
Tang 1989

T.r. & D.a.
T.r. & D.a.
D.a.

Taiwan
China

Hayat & Lin 1988; Chien et al. 1989
Tang 1989
Gavarra et al. 1990

T.r. & D.a.

Taiwan

Hayat & Lin 1988; Chien et al. 1989

D.a.
D.a.

Taiwan
Taiwan

Hayat & Lin 1988; Chien et al. 1989
Hayat & Lin 1988; Chien et al. 1989

Diaphorina citri

Signiphora sp.
PTEROMALIDAE
Pachyneuron concolor
APHELINIDAE
Coccophagus ceroplastae
Coccophagus sp.

Region

4.7

Several unidentified
SIGNIPHORIDAE
Chartocerus walkeri

Attacks

123

124

Table 4.7.4 (contÕd) Hyperparasitoids of Diaphorina citri (mostly after Tang 1989)
Attacks

Region

Reference

T.r. & D.a.
D.a.
T.r. & D.a.

Unidentified sp.

T.r. & D.a.

Taiwan
Philippines
Taiwan
China
Taiwan

Hayat & Lin 1988; Chien et al. 1989
Balthazar 1966, unpublished
Hayat & Lin 1988; Chien et al. 1989
Tang 1989
Chien et al. 1989

T.r. = Tamarixia radiata

D.a. = Diaphorencyrtus aligarhensis

Biological Control of Insect Pests: Southeast Asian Prospects

Hyperparasitoid
APHELINIDAE (contÕd)
Marietta leopardina
(= Marietta javensis)
Encarsia spp.

Table 4.7.5

Hyperparsitoids of Tamarixia radiata and Diaphorencyrtus aligarhensis in Fujian and Taiwan (after Qing
1990)
Percentage of hyperparasitisation

Hyperparasitoid

Fujian

Taiwan

Fujian

21.82

28.65

0.01

2.90

D. aligarhensis
Fujian
3.68

0.45
0.08

1.09

0.04

0.10

Taiwan

18.50

0.03

9.26

13.16

13.50

0.05

1.09
10.35

4.21
6.58

6.80
0.01

0.26

0.11
0.08
0.22

0.10
0.20

0.80
0.91
0.91

Diaphorina citri

3.45
0.91
0.18
0.18

4.7

EULOPHIDAE
Tetrastichus sp.
PTEROMALIDAE
Pachyneuron concolor
SIGNIPHORIDAE
Chartocerus walkeri
ENCYRTIDAE
Syrphophagus taiwanus
?Psyllaephagus sp.
Cheiloneurus sp.
Ageniaspis sp.
unidentified sp.A
Sp.B
Sp.C
Sp.D
APHELINIDAE
Encarsia sp. near transvena
(= E. shafeei)
Encarsia sp. A
Encarsia sp. B

T. radiata
Fujian

1.05

125

126

Table 4.7.5 (contÕd) Hyperparsitoids of Tamarixia radiata and Diaphorencyrtus aligarhensis in Fujian and Taiwan (after Qing
1990)
Percentage of hyperparasitisation

Hyperparasitoid

Fujian

T. radiata
Fujian

Totals

Taiwan

Fujian

0.25

2.50
0.01
0.10
0.01

0.05
22.24

30.14

0.90

Taiwan

30.14

28.94

39.72

Biological Control of Insect Pests: Southeast Asian Prospects

APHELINIDAE (contÕd)
Marietta leopardina
Coccophagus ceroplastae
Coccophagus sp.
Unidentified sp.

D. aligarhensis
Fujian

4.7

Diaphorina citri

127

It is noteworthy that T. radiata, which has fairly recently (1984Ð1988)
been introduced into Taiwan, was hyperparasitised to the extent only of
0.95% in 1989, whereas 42.2% of the native D. aligarhensis was attacked
(Qing 1990).
The levels of hyperparasitisation of both primary parasitoids seriously
affects their capacity to develop high populations and hence to produce
maximum reduction of host populations. Nevertheless, each primary
parasitoid killed is also a D. citri killed, so the overall mortality of D. citri is
the sum of the mortalities produced by both primary parasitoids and their
hyperparasitoids. It is abundantly clear that all hyperparasitoids must be
rigorously excluded when transferring primary parasitoids from one region
to another.

Attempts at biological control
The parasitoid Tamarixia radiata, obtained originally from India, has been
used in successful biological control projects in RŽunion, Mauritius and
Taiwan and in an attempt in the Philippines (Table 4.7.6). These projects and
comments on the situation in several other countries follow.

Table 4.7.6
Species

Introductions for the biological control of Diaphorina citri
From

EULOPHIDAE
Tamarixia radiata India

To

Year

RŽunion

1978

+

after 1978
1983Ð86

+
+

RŽunion Mauritius
RŽunion Taiwan

RŽunion Philippines 1989

Result Reference

+
?

Aubert & Quilici 1984;
Quilici 1989
Quilici 1989
Chiu et al. 1988;
Chien et al. 1988
Gavarra et al. 1990
Mercado et al. 1991

CHINA
In Guangdong, predators (lacewings, ladybird beetles, thrips, spiders)
caused about 80% mortality of D. citri. Duration of daylight (short days
reducing oviposition), quality of the flushes, and pesticide usage were other
important factors influencing D. citri populations (Chen 1988). It appears
that some Chinese farmers may spray citrus up to 50 times a year.
In Fujian there are 8 generations a year of D. citri on jasmin orange,
Murraya paniculata and populations reach their peak in summer and early
autumn during hot, dry weather when fresh shoots appear regularly.
Populations are lowest in cold, wet weather with average temperatures of

128

Biological Control of Insect Pests: Southeast Asian Prospects

9.1¡ to 12.2¡C. Rainfall affects populations since eggs are laid on very young
twigs and are easily washed off. A Tamarixia sp. was recorded in September
1987 and caused 83.3% parasitisation of nymphs in late autumn. In spring
1988 its population was low, but D. citri mainly overwinters as the adult and
Tamarixia only attacks nymphs. Predators included coccinellids (especially
Cheilomenes sexmaculata and Harmonia axyridis), lacewings, spiders and
praying mantids (Xia et al. 1987; Ke 1991).
In Guangdong a maximum of 75% mortality of D. citri was recorded as
being due to the hyperparasitoid Tetrastichus sp. (Liu 1989).
Beauveria bassiana (Chen et al. 1990a), Cephalosporium (Verticillium)
lecanii and two other fungi (Fusarium lateritium and Paecilomyces sp.)
were found attacking D. citri. Suspensions of C. lecanii sprayed on to
D. citri displayed a very high pathogenicity (Xie et al. 1988, 1989b).
INDONESIA
Citrus greening is also known as citrus vein phloem degeneration. In East
Java, both T. radiata (the commoner) and D. aligarhensis (the more
widespread) were found in 1987 attacking D. citri on Murraya paniculata
(Nurhadi and Crih 1987). D. citri is known to occur in Irian Jaya and may
have been introduced in recent times, but it is not known if it is parasitised
there.
MALAYSIA
Both Tamarixia radiata and Diaphorencyrtus aligarhensis are present with
parasitisation rates ranging up to 28% in 4th and 5th instar nymphs (Osman
and Quilici 1991) or up to 36% parasitisation (Lim et al. 1990). T. radiata is
also present in Sarawak (S. Leong, pers. comm. 1995).
NEPAL AND BHUTAN
Both T. radiata and D. aligarhensis are present in some parts of both
counties and may cause parasitisation of D. citri in excess of 90% (Lama and
Amtya 1991; Lama et al. 1987).
PHILIPPINES
Citrus greening, also known as citrus leaf mottle, was already causing
serious damage in the early 1960s. However, as late as 1988, the windward
side of Mindoro island with an average rainfall of 3000 mm was virtually
free of D. citri and citrus greening, presumably due to the adverse effects of
high rainfall (Aubert 1989a). D. aligarhensis was reared from D. citri
(25.7% parasitisation) and also 4 hyperparasitoids (Marietta sp. and 3
unidentified species), resulting in an overall mortality of D. citri of 48.3%. A
Beauveria sp. attacked many psyllids and in turn was parasitised by another
ascomycete, probably a Melanospora sp. (Gavarra and Mercado 1989).
Later (Mercado et al. 1991), up to 62.2% parasitisation by D. aligarhensis

4.7

Diaphorina citri

129

was reported in Mindoro. In another study, Gavarra et al. (1990) recorded
that, in addition to the primary parasitoid D. aligarhensis (17.6 to 36.1%
parasitisation), 5 hyperparasitoids were reared from D. citri: Marietta
leopardina (= M. javensis), Tetrastichus sp., Psyllaephagus sp., Chiloneurus sp. and Signiphora sp.
Because it was apparently absent from the Philippines (Baltazar 1966),
Tamarixia radiata was introduced from RŽunion in 1988, but attempts to
rear it failed. A second consignment late that year was soon followed by the
discovery of it nearby in the field in April 1989, with recoveries continuing
in 1990 (Gavarra et al. 1990). However, Mercado et al. (1991) expressed
some doubts that it had become established. It is thus not clear whether
T. radiata ever occurred naturally in the Philippines.
RƒUNION
The rainy, windward, east side of RŽunion has much lower D. citri
populations and citrus trees there are much less exposed to transmission of
greening (Aubert 1989a). Quilici (1989) has provided a valuable overview
of the biological control of citrus psyllids in RŽunion. In the early 1970s,
RŽunion and Mauritius were the only places known where Diaphorina citri
and Trioza erytreae, the two psyllid vectors of citrus greening disease,
occurred (Aubert 1987c). (Both are now known also from Saudi Arabia and
Yemen: BovŽ 1986). Both psyllids were abundant in RŽunion and Mauritius
and citrus greening was seriously affecting citrus production in both islands.
The Asian citrus psyllid D. citri was most abundant below 500 m in the
hotter and drier leeward side of RŽunion, where the average rainfall is below
1000 m. On the other hand, the drought-sensitive African psyllid T. erytreae
was particularly abundant in the cooler, moister regions above 600 m. The
only nymphal parasitoid of both species was the relatively ineffective
D. aligarhensis. Several predators exerted little control.
Tamarixia dryi was introduced in 1974 from South Africa and, after
elimination of hyperparasitoids, was mass produced and released in
neglected, unsprayed citrus orchards colonised by D. citri. Populations of
Trioza erytreae diminished progressively from 1979 to 1982, since when
T. erytreae has not been recorded, although Tamarixia dryi is still abundant
on another psyllid, Trioza litseae (= T. eastopi).
In 1978 Tamarixia radiata was introduced from India and released on
the leeward (west) side of RŽunion. From 1982 onwards D. citri has virtually
disappeared from commercial citrus orchards, although on Murraya
paniculata hedges there persist low populations of D. citri which are
parasitised by T. radiata and occasionally, especially at higher altitudes, by
D. aligarhensis.

130

Biological Control of Insect Pests: Southeast Asian Prospects

The excellent success of these two biological control projects is ascribed
to 3 factors:
(i) the absence of hyperparasitoids of the primary parasitoids of Tamarixia
dryi and T. radiata.
(ii) the presence of an alternative host for Tamarixia dryi, which enabled it
to maintain itself as Trioza erytreae populations diminished.
(iii) the maintenance on Murraya paniculata hedges of low populations of
D. citri, heavily parasitised by both T. radiata and D. aligarhensis
(Aubert 1987c; Etienne and Aubert 1980; Quilici 1989).
SAUDI ARABIA AND YEMEN
In Saudi Arabia, both D. citri and Trioza erytreae are present; the former is
the main vector of citrus greening. Both vectors are also present in Yemen
where citrus greening at high elevations is probably the African form
transmitted by T. erytreae (BovŽ 1986). In Saudi Arabia lime and lemon
trees are favoured hosts of D. citri (Wooler et al. 1974).
TAIWAN
The nymphal ectoparasitoid Tamarixia radiata was introduced from
RŽunion and, after mass rearing, released widely in citrus orchards and on
Murraya paniculata hedges from 1984 to 1988. It became established,
attaining parasitisation rates of up to 100%. Hyperparasitisation was
initially, in 1988, below 1% (Chien 1989; Chien et al. 1988; Su and Chen
1991), but by 1991 had risen gradually to 5.6% (Chien et al. 1991a). This is
in contrast with levels of 72% by some 10 species attacking the native
Diaphorencyrtus aligarhensis. High levels of attack on D. aligarhensis is
one reason why this species is far less effective against the citrus psyllid than
the introduced T. radiata (Chien et al. 1988). T. radiata was capable of
maintaining D. citri at low densities in relatively stable habitats where
Murraya paniculata was occasionally present, whereas D. aligarhensis has
adapted to unstable habitats. However, it only provides partial control due to
25.5 to 51.1% hyperparasitisation throughout the island. In the Taichung
area, T. radiata was more abundant than D. aligarhensis, but the peak
abundance of the two did not overlap and the total parasitisation varied from
80 to 100% from February to April and 32 to 80% for the remainder of the
year. Application of methomyl gave good control of D. citri, but it reduced
parasitisation to a level of 0 to 4%. In an untreated citrus orchard with only
0.1 to 0.4 D. citri adults per 10 cm length branch, the parasitoids caused 15.5
to 46.7% parasitisation (Chien et al. 1991a). Citrus greening in Taiwan is
known as likubin or leaf mottle disease.

4.7

Diaphorina citri

131

VIETNAM
Tamarixia radiata was found parasitising 3 to 10% of 4th and 5th instar
nymphs of D. citri and Diaphorencyrtus aligarhensis was also present
(Myartzeva and Trijapitzyin 1978; Trung 1991; van Lam 1996).

Major natural enemies
HYMENOPTERA

Diaphorencyrtus aligarhensis Hym.: Encyrtidae
This primary endoparasitoid was described by Shafee et al. (1975), from
India as Aphidencyrtus aligarhensis. Its hosts include Diaphorina citri,
D. auberti, D. cardiae and Psylla sp. (Qing and Aubert 1990).
The D. citri mummy parasitised by D. aligarhensis is brownish and
hemi-spherical and encloses the parasitoid pupa. The parasitoid emerges
from the side of the abdomen. Development from egg to adult takes 18 to 23
days at 25 ± 1¡C and 80 to 85% relative humidity (Tang and Huang 1991).
No males occur and unmated females produce females. On average, 4.5 eggs
are laid per day with an average production of 144 per female. Third and 4th
instar D. citri nymphs are preferred over 2nd instar, and 1st and 5th instars
are not parasitised. Usually only one egg is inserted into each host, but the
haemolymph of many young nymphs is consumed leading to their death
(Tang and Huang 1991).

Tamarixia radiata Hym.: Eulophidae
This ectoparasitoid was described from India (Waterston 1922) where it is
an important species (Husain and Nath 1924). It has been recorded in China
(in 1982: Tang 1989), Indonesia (Nurhadi 1989), Malaysia (Lim et al. 1990),
Nepal (Lama et al. 1988), Saudi Arabia (Aubert 1984a), Thailand (Qing and
Aubert 1990) and Vietnam (Myartzeva and Trijapitzyin 1978). T. radiata
has been introduced to, and established in, RŽunion (Aubert and Quilici
1984), Mauritius (Quilici 1989) and Taiwan (Chiu et al. 1988).
T. radiata was found to be the dominant parasitoid of D. citri on Murraya
paniculata in Fujian, comprising 62.6% of all parasitoids and
hyperparasitoids emerging. The second in abundance was the
hyperparasitoid Tetrastichus sp., most of which were bred from T. radiata,
an average of 21.8% hyperparasitisation, rising to a maximum of 87.9%,
whereas the other primary parasitoid D. aligarhensis was hyperparasitised to
an average of 34.1% (Tang 1989).
The T. radiata female oviposits ventrally between the thorax and
abdomen of the nymph, preferably of the 5th instar, and its fully grown larva
spins silk to attach itself and its host to the plant substrate. The D. citri
mummy parasitised by T. radiata has a dark brown, flattened body and the

132

Biological Control of Insect Pests: Southeast Asian Prospects

parasitoid pupa remains external to, and on the ventral surface of, the host.
The adult wasp emerges via a hole cut through the thorax of the host (Qing
1990; Tang and Huang 1991). Under favourable conditions, parasitisation
can exceed 90%, as in India (Husain and Nath 1927) and also in RŽunion,
Nepal and Taiwan (Quilici and Fauvergue 1990).
Male T. radiata are capable of multiple matings, but females usually
mate only once. The egg to adult period was 11.4 days (egg 1.9, larva 4.0,
prepupa 0.6, pupa 4.9 days), females lived 23.6 days and males lived 14.8
days (Chien et al. 1991a,b; Chu and Chien 1991). Fauvergue and Quilici
(1991) report reduction of the duration of immature stages with increasing
temperature from 17 days at 20¡C to 8 days at 30¡C. Adult females lived 37
days at 20¡C and 8 days at 35¡C. Females kill some 80% of D. citri hosts by
parasitisation and 20% by host feeding. When 40 psyllids were presented per
day a female killed 513 psyllids in a lifetime. At an optimum temperature of
25¡C, 24, 5th instar nymphs were killed per day (Chien et al. 1993). Adult
parasitoids can be cold stored at 8¡C for between 46 and 60 days (Chien et al.
1993). Oosorption occurred when hosts were unavailable. This extended the
reproductive period, but diminished the total number of eggs laid (Chien et
al. 1994b). Feeding by females on the honeydew produced by the host and on
host haemolymph provides nutrients for egg production. The parasitoid fed
on the exudate of 28% of host eggs parasitised (Chien et al. 1994a). The
optimal host density over the entire T. radiata lifetime was found to be 2 to 8
per day, of which 90 to 94% were utilised. For the peak oviposition period,
optimal density was 2 to 20, of which 87 to 90% were utilised (Chien et al.
1995).
The sex ratio of T. radiata is 1:3 in favour of females. Unmated females
give rise only to male offspring. Oviposition occurs on 3rd, 4th and 5th instar
nymphs and there is discrimination against ovipositing in nymphs
containing older D. aligarhensis larvae. The average number of offspring is
reported as 134 with 6.5 eggs laid per day (Tang and Huang 1991).
Observations in China indicate that T. radiata is more affected by low
temperatures than D. citri. Thus T. radiata breeds more effectively in
Xiamen, where the lowest winter temperature is 3.9¡C, than in Fuzhou,
where overwintering is jeopardised by lowest minimum temperatures of
Ð2.5¡C (Aubert 1990).

4.7

Diaphorina citri

133

Tetrastichus sp. Hym.: Eulophidae
This undescribed species is an important hyperparasitoid of Tamarixia
radiata in China. Average hyperparasitisation amounted to nearly 25%, with
a maximum of 87.9%. The genus Tetrastichus contains more than 150
species attacking a wide variety of hosts.
ARACHNIDA

Marpissa tigrina: Salticidae
The number of D. citri consumed daily by an individual spider increased
with an increase in available prey up to 40. Further increases in prey
numbers reduced predation. The results suggest that M. tigrina is a highly
efficient predator of D. citri (Sanda 1991).

Comments
Diaphorina citri and its two primary parasitoids, Diaphorencyrtus
aligarhensis and Tamarixia radiata, are (especially the first two species)
very widespread in Southeast Asia. In these countries the prospects for
biological control are unpromising, although the careful timing of least
harmful, but still effective, insecticides (or, preferably, special petroleum
oils) would favour a build up of the parasitoids. The role played by hedges
and other plantings of the common, favoured host, jasmin orange, Murraya
paniculata in encouraging either D. citri or its parasitoids is worthy of
careful investigation, for this may differ widely according to the insecticidal
treatments in the nearby citrus plantings. Overhead irrigation to reduce
numbers of eggs and young nymphs during periods of growth flushes is
probably uneconomical in most situations, but is possibly a factor to
consider in a pest management approach.
Although D. aligarhensis appears to be a less effective parasitoid than
T. radiata, it still may contribute useful suppression of D. citri where it can
be introduced without encountering hyperparasitoids.
In contrast to much of Southeast Asia, the prospects for successful
biological control of D. citri appear to be promising for countries that have
been recently invaded, particularly if there are few or no hyperparasitoids
already present that are capable of attacking T. radiata and/or
D. aligarhensis. In this context it may be valuable to explore the situation in
Irian Jaya and Timor where D. citri has been recorded only recently.
Successful biological control there may slow the spread of D. citri into
Papua New Guinea, Australia and the oceanic Pacific. Brazil has a range of
native psyllids that are attacked by Tamarixia spp. so it is possible that there
are already hyperparasitoids present that would attack T. radiata were it to
be introduced.

134

Biological Control of Insect Pests: Southeast Asian Prospects

Since Tamarixia leucaenae attacks both Heteropsylla cubana and
H. spinulosa, it would be valuble to know whether Tamarixia radiata will
also attack Heteropsylla spinulosa. This is the psyllid that has been
successfully introduced to Papua New Guinea, Australia and some oceanic
Pacific countries for the biological control of creeping, sensitive plant,
Mimosa invisa. If it does attack H. spinulosa, there would clearly be a
conflict of interest between biological control of D. citri and of M. invisa,
were Heteropsylla spinulosa to be considered for the latter. However, at
least some species of Tamarixia are satisfactorily host restricted and it is
quite possible that T. radiata is one of them.

135

4.8

Dysdercus cingulatus

China

+

India

Taiwan

Myanmar
20°

+

Laos

20°

+

++

Thailand

Philippines

+

Cambodia
P
Vietnam

++

+

P
Brunei

Malaysia


+



Singapore

Papua
New Guinea
P

++
Indonesia

20°

Australia

20°

Dysdercus cingulatus is native to the Southeast Asian region.
No parasitoids of the cotton stainer are known and surprisingly few predators are
reported. No effective parasitoids of the many Dysdercus species that occur in other parts
of the world are known. On present knowledge, therefore, the prospects for classical
biological control of this bug would appear to be very remote.

136

Biological Control of Insect Pests: Southeast Asian Prospects

Dysdercus cingulatus (Fabricius)
Hemiptera, Pyrrhocoridae
cotton stainer, red cotton bug, red seed bug

Rating
Southeast Asia
11

++
+
P

Viet, Indo, Phil
Myan, Thai, Laos,
Msia, Sing
Brun

China

Southern and Western Pacific

+
P

PNG, Sol Is, Van, Marianas,
Carolines, N Cal.

Origin
Southeast Asia.

Distribution
Waterhouse (1993a) was in error in accepting Kalshoven (1981), who listed
the distribution of D. cingulatus as Ôwidespread from the Mediterranean to
AustraliaÕ. In fact, it occurs from north eastern India through Bangladesh to
all Southeast Asian countries, southern China, southern Japan, Irian Jaya,
Papua New Guinea, eastern Australia, Saipan, Palau, Pohnpei, Yap,
Solomon Is., Vanuatu and New Caledonia (CIE 1985). There are some 50
species of Dysdercus, some of which appear to be native to the African,
Ethiopian, Southern Asian and American regions respectively (Freeman
1947). D. cingulatus is not recorded from Africa, Europe, Western Asia or
the Americas.

Biology
Eggs are usually laid singly in batches of about 100 (range 25 to 112) in
small depressions in the soil under the host plant. They are camouflaged with
soil particles or other debris. Some 80% of the eggs hatch in about 6 days if
there is the essential high humidity. The optimum hatch occurs at 30¡C and
80% RH. There are 5 nymphal instars which take 25 to 27 days to complete
and the oviposition to adult period is thus 31 to 33 days. The first instar
nymphs do not feed. Later instars suck sap with a preference for pods and
seeds. All stages are gregarious. The male:female ratio is 3:2 and mating
takes place readily and repeatedly, pairs often remaining in copula for 2 to 4
days, during which they move and feed (Srivastava and Bahadur 1958;
Thomas 1966; Ahmad and Aziz 1982, 1983, Farine and Lobreau 1984,
Siddiqi 1985, 1987; Khoo et al. 1991).

4.8

Dysdercus cingulatus

137

D. cingulatus is one of the commonest insects in cultivated land in
Indonesia. Adults range from 11 to 17 mm in length and are orange and black
in colour, with a characteristic white band on the pronotum and single large
black spots on each orange forewing.
Both adults and nymphs produce a complex mixture of compounds as a
defensive secretion (Farine et al. 1992, 1993) and females produce a sex
pheromone from glands in the thorax (Siddiqi 1988; Siddiqi and Khan
1982).

Host plants
The principal host plants of D. cingulatus are in the families Malvaceae and
Bombacaceae and include cotton, kapok, okra and rosella. It was the most
important pest of cotton in the coastal districts of Malaysia in the early days
and also fed on the seeds of kapok, rosella, hibiscus, hemp, okra and other
malvaceous plants (Jack and Sands 1922; Dresner 1955). In a host
preference test in Malaysia, the following order was recorded kapok > okra >
urena > maize > sorghum (Chong 1975). It has also been recorded on wheat
(Srivastava and Gupta 1971), pearl millet, Pennisetum glaucum
(= P. americanum) (Ahmad 1979) and a range of weeds.

Damage
Like other species of Dysdercus throughout the world D. cingulatus is most
important as a pest of cotton. The sap removed and the fungus introduced
into the punctures caused when feeding on the developing cotton bolls
causes staining of the lint, giving rise to one of its common names.

Natural enemies
Very little has been published on the natural enemies of D. cingulatus and no
parasitoids are known. In view of the large number of parasitoids of Nezara
viridula eggs (Table 4.12.1), it seems strange that none are recorded from
eggs of the cotton stainer. There appear to be no statements in the literature
that they have been looked for unsuccessfully.
The few records retrieved of natural enemies of D. cingulatus are shown
in Table 4.8.1. The pyrrhocorid predator Antilochus coquebertii has been
reported attacking the cotton stainer in India and Malaysia (Yunus & Ho
1980; Zaidi 1985). It is believed to inject saliva containing proteolytic
enzymes into eggs, nymphs or adults before sucking out the liquified
contents. In the Philippines an ectoparasitic mite, Hemipterotarseius sp. was
found on the pronotum of adult bugs, two species of spiders were observed
attacking bugs and a nematode was found in the abdomen of a female. No

138

Biological Control of Insect Pests: Southeast Asian Prospects

egg parasitoids were found (Encarnacion 1970). Singh and Bardhan (1974)
showed that D. cingulatus was moderately susceptible to the DD 136 strain
of the nematode Steinernema carcocapsae.
A superficial review of the literature on the natural enemies of other
species of Dysdercus revealed two tachinid parasitoids, one of each in South
America and Africa and three asassin bug predators in Africa but no egg
parasitoids (Table 4.8.2).

Comment
Too little is known about the natural enemies of D. cingulatus to indicate
whether there are any prospects for classical biological control or for
manipulating them where they already occur. Since D. cingulatus now
appears to have evolved in the Southeast Asian region and since effective
natural enemies of related species elsewhere are not known, the prospects
for its classical biological control would appear to be remote.

Table 4.8.1

Natural enemies of Dysdercus cingulatus

Enemy

Country

Reference

India
Malaysia

Zaidi 1985
Thomas 1966; Yunus & Ho 1980

Philippines

Encarnacion 1970

Philippines
Philippines

Encarnacion 1970
Encarnacion 1970

Philippines

Encarnacion 1970

India

Kshemkalyani et al. 1989

INSECTA

HEMIPTERA
PYRRHOCORIDAE
Antilochus coquebertii
ACARINA
Hemipterotarseius sp.
ARACHNIDA
Spider 1
Spider 2
NEMATODA
Species 1
FUNGI
Aspergillus flavus

4.8

Table 4.8.2

Dysdercus cingulatus

Natural enemies of Dysdercus spp.

Enemy
HEMIPTERA
REDUVIIDAE
Phonoctonus nigrofasciatus
Phonoctonus subimpictus
Phonoctonus sp.

Country

Reference

Zimbabwe
Ivory Coast
Mozambique

Sweeney 1960
Galichet 1956
Barbosa 1950

Argentina
Ivory Coast

Blanchard 1966
Galichet 1956

DIPTERA
TACHINIDAE
Acaulona brasiliana
Bogosia helva

139

141

4.9

Dysmicoccus brevipes

China

+

India

Taiwan

+

Myanmar
20°

Laos

20°

++

Thailand
P
Cambodia

Philippines

+

Vietnam

+++

++

P
Brunei

Malaysia




Singapore

Papua
New Guinea

++
Indonesia

+

20°

Australia

20°

The pineapple mealybug, Dysmicoccus brevipes, is of Central or South American
origin. It occurs in both parthenogenetic and bisexual forms, the females of which are
morphologically indistinguishable, although they may possibly prove to be distinct species.
The closely-related, bisexual, D. neobrevipes also occurs on pineapple.
Attempts have been made by several countries to establish natural enemies for
biological control, but none has had any great success without the control of attendant
ants. When ants were controlled the mealybug was no longer a problem. Ant control is less
likely to be an answer to the problem in the absence of suitable natural enemies. It is
desirable, therefore, to establish appropriate natural enemies in anticipation of effective
ant control, an aspect which is now being actively investigated in Hawaii.

142

Biological Control of Insect Pests: Southeast Asian Prospects

Dysmicoccus brevipes (Cockerell)
Hemiptera, Pseudococcidae
pineapple mealybug

Rating
Southeast Asia
10

+++
++
+
P

Viet
Msia, Indo, Phil
Camb
Brun, Thai

China

Southern and Western Pacific
17

+

+++
++
+
P

Cook Is, Guam
FSM, Niue, Van
Kiri, N Cal, PNG, Sam,
Sol Is
Fiji, Fr P, A Sam.
Tok, Tong, Tuv

Origin
Carter (1935) considered D. brevipes to be native to South America,
although Ferris (1950) believed it to be of North American origin. The
pineapple plant (Ananas comosus) is thought to be native to South America
and has been known in Central America since pre-Columbian times.
Although the pineapple mealybug is widely polyphagous, if it evolved in
association with pineapple plants, it would appear to be logical to assign its
origin to Central and/or South America.

Distribution
D. brevipes is one of the most widespread mealybugs, occurring throughout
the tropics and in many temperate areas, especially those where pineapples
are grown (Williams and Watson 1988). These include tropical Africa,
Mauritius, tropical Asia, Southeast Asia, Taiwan, Australia, Pacific islands
(including Hawaii), southern USA (Florida, Louisiana) West Indies and
Central and South America (Bartlett in Clausen 1978).

Taxonomy
Dysmicoccus brevipes was earlier known as Pseudococcus brevipes, but its
genus was changed by Ferris (1950). Before 1959 it was confused with a
similar mealybug (often on the same host plants), which was described by
Beardsley (1959) as Dysmicoccus neobrevipes. Both species occur in
Hawaii, where D. brevipes is parthenogenetic and the females are pink,
whereas D. neobrevipes is bisexual and females are grey in colour.
Parthenogenetic D. brevipes is known also from Jamaica and West Africa
(Beardsley 1965).

4.9

Dysmicoccus brevipes

143

In some countries (Ivory Coast, Madagascar, Dominican Republic,
Martinique, Malaysia) both sexes of D. brevipes occur (Beardsley 1965;
Lim 1973). D. neobrevipes is known from many countries in Central and
South America and probably also originated there (Williams and Watson
1988). It is known from Mexico, Jamaica, American Samoa and Samoa,
Cook Is, Kiribati and Guam. In Southeast Asia it occurs in Malaysia, the
Philippines and Thailand (where there have been recent serious outbreaks
(Beardsley 1965; Rohrback et al. 1988; Williams and Watson 1988).

Biology
D. brevipes females are broadly oval to rotund in shape, pinkish in colour,
and have a thick waxy covering with short conical waxy projections
(Kalshoven 1981). In Hawaii, D. brevipes is parthenogenetic and
ovoviviparous (i.e. it produces its young alive). About 250 crawlers are
produced per female over a 3 to 4 week period and take some 34 days to
mature. Females start producing young about 25 days after the third moult
(Ito 1938).
In peninsular Malaysia the bisexual form is widespread but the
parthenogenetic form was not found (Lim 1973). In the male, there are two
nymphal, one prepupal and one pupal instar of 10, 6, 3 and 4 days duration
respectively. Adult males live for 1 to 3 days, whereas adult females live 17
to 49 days. The female has 3 nymphal instars, lasting 10, 7 and 7 days
respectively. A female produces 19 to 137 offspring with a sex ratio of 1:1
(Lim 1973). The bisexual form in Malaysia has a 10 day shorter life cycle
than the parthenogenetic form in Hawaii and might have as many as 9
generations a year (Lim 1973). The bisexual form of D. brevipes is capable
of producing green spotting on pineapple leaves, whereas the
parthenogenetic form is not (Beardsley 1965).
In India, Ghose (1983) studied the parthenogenetic form of D. brevipes
at 30¡C and 60Ð66% R.H. The nymphs completed their development in 19
days and, after a pre-oviposition period of 16 days, produced an average of
240 young over a period of 40 days.
D. brevipes occurs mainly on the underground parts of the pineapple
stem (where the stem is covered by leaf bases) and on the roots. Leaves or
fruit are less heavily infested, except on weak plants. However the bisexual
form also infests the crown of the pineapple plant (Rohrbach et al. 1988).
By comparison, D. neobrevipes, which is always bisexual, is found only
on the aerial parts of the pineapple plant Ñ leaves, stems, aerial roots,
flowers and fruit clusters. Unlike D. brevipes, it does not infest grasses . In
Hawaii, only D. neobrevipes causes green spotting of pineapple leaves
(Beardsley 1959).

144

Biological Control of Insect Pests: Southeast Asian Prospects

The pineapple mealybug is generally attended by ants seeking
honeydew. They not only protect it against natural enemies but also assist in
dispersal by transporting it to new plants. Where appropriate natural enemies
are present, but attendant ants are not, the mealybug is no longer a problem
(Beardsley et al. 1982). The identity of the ants varies from place to place,
although 3 very widespread species are often involved, the bigheaded ant,
Pheidole megacephala, the Argentine ant, Iridomyrmex humilis, and the fire
ant Solenopsis geminata. The gradual invasion of new pineapple plantings
by ants is accompanied by progressive outbreaks of mealybugs, so ant
control is essential. It is interesting that mated queens of P. megacephala
must, following the nuptial flight, rejoin established colonies to survive.
Thus, invasion into new territory is accomplished by extension of existing
nests, a feature that is of importance in controlling the big-headed ant
(Beardsley et al. 1982).

Hosts
D. brevipes occurs widely on its preferred host, pineapple, wherever this is
grown in moist tropical or subtropical areas, but it can be found on almost
any kind of plant and is sometimes a pest of sugarcane and bananas. It also
occurs on areca palm, coffee, groundnut, oil palm, rice, sisal, soybean,
Pandanus palm and a range of grasses and weeds (Clausen 1978; Kalshoven
1981; Khoo et al. 1991).

Damage
In Hawaii, through their feeding, both D. brevipes and D. neobrevipes
produce symptoms of toxicosis on pineapple, including stunting, reddening
and wilting of young plants, due to what is now held to be a virus, and termed
pineapple mealybug wilt. D. neobrevipes, but not the parthenogenetic form
of D. brevipes, also produces a green spotting on the leaves. Where the
bisexual form of D. brevipes occurs elsewhere it is capable of producing
green spotting.
Unless collected by ants, honeydew produced by the mealybugs, leads to
the massive growth of sooty moulds which reduces photosynthesis, affects
sales of fruit and attracts Carpophilus spp. beetles, which contaminate
canned fruit. Large colonies of D. brevipes in leaf sheaths near the roots of
sugarcane result in poor growth and, when on groundnuts, cause the seed
pods to become discoloured.

4.9

Dysmicoccus brevipes

145

Natural enemies
A number of coccinellid predators are recorded attacking D. brevipes (Table
4.9.1) and it is possible that some of these have a sufficiently narrow host
range to be considered for introduction. However, it is more likely that the
dipterous and lepidopterous predators will be more specific. The encyrtid
parasitoids would appear to be even more promising and it seems that the full
range of species attacking D. brevipes in Central and South America has not
yet been identified.

Attempts at biological control
A number of natural enemies, mainly encyrtid parasitoids and coccinellid
and dipterous predators have been successfully introduced, in particular into
Hawaii, Puerto Rico and the Philippines (Table 4.9.2). Details are provided
in the country accounts that follow. It will become clear that a substantial
degree of control of D. brevipes can be achieved in the absence of ants,
which clearly protect the mealybugs against parasitoids and predators.
HAWAII
The pineapple mealybug has, for many years, constituted the most serious
insect problem of the pineapple industry (Carter 1932; Beardsley 1959) and
it is also a minor pest of sugarcane and bananas. An encyrtid wasp
Euryrophalus schwarzi (= E. pretiosa) was reared from D. brevipes
collected from sugarcane (Beardsley 1959).
In the early 1920s several natural enemies were introduced from Mexico
and Panama, but none became established (Rohrbach et al. 1988). Anagyrus
ananatis and Hambletonia pseudococcina from Central America and Brazil
were established in 1935Ð36 and were effective in Maui where the dominant
ant was the crazy ant Paratrechina longicornis. Parasitisation was high and
pineapple wilt quite severe (Carter 1945). Other introductions known to
have become established are an encyrtid parasitoid (Euryrhopalus
propinquus), a cecidomyiid predator (Vincentodiplosus pseudococci), and
two less effective coccinellid predators (Scymnus (= Nephus) bilucenarius
and Scymnus uncinatus) (Lai and Funasaki 1986).
Overall, although the biological control of the pineapple mealybug has
not been completely successful, a considerable reduction in abundance has
resulted from the combined action of the cecidomyiid predator
Vincentodiplosis and the encyrtid parasitoids Anagyrus ananatis and
Hambletonia pseudococcina. They are highly effective only where ants are
adequately controlled (Clausen 1978). Coccinellids are important for short
periods, particularly in the middle of large plantings, where the absence of
ants renders D. brevipes exposed to attack (Carter 1935, 1944).

Natural enemies of Dysmicoccus brevipes

146

Table 4.9.1

Country

References

Mauritius

Jepson 1939a

Hawaii

Carter 1935

Fiji
Fiji
Fiji

Lever 1940
Lever 1940
Lever 1940

Guatemala
Hawaii
Fiji, New Caledonia
Fiji, New Caledonia
Hawaii, New Caledonia
Malaysia
Guatemala
Mauritius
Fiji, New Caledonia
Malaysia
Taiwan

Carter 1935
Kalshoven 1981
Williams & Watson 1988
Williams & Watson 1988
Williams & Watson 1988
Yunus & Ho 1980
Carter 1935
Jepson 1939a
Cohic 1958
Yunus & Ho 1980
Takahashi 1939

HEMIPTERA
DIASPIDIDAE
Diaspis bromeliae

ORTHOPTERA
NEUROPTERA
CHRYSOPIDAE
Chrysopa irregularis
Chrysopa ramburi
Chrysopa sp.

COLEOPTERA
COCCINELLIDAE
Brachycantha sp.
Cryptolaemus montrouzieri
Cryptolaemus sp.
Rhizobius ventralis
Scymnus apiciflavus
Scymnus bilucenarius
Scymnus mauritiusi
Scymnus sp.
Sticholotis quatrosignata
Coccinellids
Other species in introductions listed in table 4.9.2

Biological Control of Insect Pests: Southeast Asian Prospects

Conocephalus saltator

Table 4.9.1 (contÕd) Natural enemies of Dysmicoccus brevipes
Country

References

Taiwan
Guatemala
Mauritius
Puerto Rico

Takahashi 1939
Carter 1935
Jepson 1939a
Plank & Smith 1940

Mauritius
Guatemala

Jepson 1939a
Carter 1935

Puerto Rico

Plank & Smith 1940

South Africa
Puerto Rico

BŸttiker 1957
Plank & Smith 1940

ENCYRTIDAE
Aenasius acuminatus
Aenasius theobromae
Anagyrus ananatis

Trinidad
Trinidad
Brazil

Anagyrus sp.
Encyrtid sp. 1
Euryrhopalus propinquus

Brazil
Brazil
Brazil, Guyana, Hawaii

Kerrich 1967
Kerrich 1953
Carter 1937;
Gabriel et al. 1982
Compere 1936
Compere 1936
Kerrich 1967

DIPTERA
CECIDOMYIIDAE
Schizobremia formosana
Cecidomyiid sp. 1
Cecidomyiid sp. 2
Cecidomyiid sp. 3
DROSOPHILIDAE
Gitonides perspicax
Pseudiastata nebulosa

LEPIDOPTERA

Dysmicoccus brevipes

HYMENOPTERA

4.9

PYRALIDAE
Species 1
TINEIDAE
Drosica abjectella
Species 1

147

148

Table 4.9.1 (contÕd) Natural enemies of Dysmicoccus brevipes
Country

References

Guatemala
Hawaii
Brazil, Colombia, Venezuela
California
Cuba
Trinidad
Brazil
Puerto Rico

Clausen 1978
Beardsley 1959
Carter 1937
Clausen 1978
Gahan 1946
Clausen 1978
Clausen 1978
Bartlett 1945

Guatemala
Guatemala

Carter 1935
Carter 1935

Malaysia

Yunus & Ho 1980

Hawaii

Carter 1944

HYMENOPTERA
ENCYRTIDAE (contÕd)
Euryrhopalus schwarzi (= E. pretiosa)

ARACHNIDA
spiders

Biological Control of Insect Pests: Southeast Asian Prospects

Hambletonia pseudococcina
Leptomastix dactylopii
Pseudaphycus angustifrons
Pseudaphycus dysmicocci
Pseusaphycus sp.
Thysanus niger
CHALCIDIDAE
Species 1
Species 2
UNIDENTIFIED FAMILY
7 species

Table 4.9.2

Introductions for the biological control of Dysmicoccus brevipes
Country

From

Year

Result

Reference

1935
1931
1934Ð35
1937Ð38

Ð
Ð
+
Ð

1946
1935

Ð
+

Lai & Funasaki 1986
Lai & Funasaki 1986
Carter 1937
Bartlett 1939, 1943
Clausen 1978
Lai & Funasaki 1986
Lai & Funasaki 1986

1935
1935Ð36
1935Ð36
1935Ð36
1936
1937Ð38

+
Ð
+
+
Ð
+

Clausen 1978
Carter 1937; Clausen 1978
Carter 1937; Clausen 1978
Carter 1937
Clausen 1978
Bartlett 1939

1944
1958
1946
1930

+
?
?
?
Ð

Annand 1945; Clausen 1956
Clausen 1978
Clausen 1978
Clausen 1978
Lai & Funasaki 1986

1931

Ð

Lai & Funasaki 1986

HYMENOPTERA
Colombia
Panama
Hawaii
Peurto Rico

Anagyrus kivuensis
Euryrhopalus propinquus

California
Hawaii

Euryrhopalus schwarzi
Hambletonia pseudococcina

Hawaii
Hawaii

Leptomastix dactylopii
Pseudaphycus dysmicocci
Pseudaphycus sp.
Zaplatycerus fullawayi
PLATYGASTERIDAE
Allotropa sp.

Florida
Hawaii
Hawaii
Hawaii
Mexico
Panama

British
Guiana
Guatemala
Brazil
Colombia
Venezuela
Hawaii
Brazil via
Hawaii
Puerto Rico
California
Trinidad
Brazil

Dysmicoccus brevipes

Jamaica
Puerto Rico

Brazil
Brazil
via Hawaii

4.9

ENCYRTIDAE
Aenasius colombiensis
Aenasius sp.
Anagyrus ananatis
(= Anagyrus coccidivorus)

149

Country

From

Panama
Mauritius

S. Africa

150

Table 4.9.2 (contÕd) Introductions for the biological control of Dysmicoccus brevipes
Year

Result

1931
1938Ð39

Ð
Ð

Reference

COLEOPTERA
COCCINELLIDAE
Cleothera sp.
Cryptolaemus montrouzieri

Scymnus 6 ´ spp.
Scymnus sp.

Hawaii
Taiwan

Cryptolaemus sp.
Diomus sp.
Hyperaspis albicollis
Hyperaspis c-nigrum
Hyperaspis silvestri
Hyperaspis 12 ´ spp.
Hyperaspis sp.
Scymnus (=Diomus) margipallens
Scymnus (=Nephus) bilucernarius

+

Hawaii

Hawaii
various
Hawaii
Hawaii

Mexico,
Panama
various
Saipan

1939
1931

?
Ð
Ð
Ð
Ð
+
?
Ð
+

1930
1924
1948
1922

+
Ð
Ð
+

Sakimura 1935
Lai & Funasaki 1986
Lai & Funasaki 1986
Lai & Funasaki 1986
Lai & Funasaki 1986
Clausen 1978
Clausen 1978
Clausen 1978
Clausen 1978
Lai & Funasaki 1986
Lai & Funasaki 1986
Lai & Funasaki 1986
Lai & Funasaki 1986
Lai & Funasaki 1986

?
?

Clausen 1978
Sakimura 1935

1939
1931
1924
1935
1931

Biological Control of Insect Pests: Southeast Asian Prospects

Scymnus pictus
Scymnus quadrivittatus
Scymnus uncinatus

Easter Is
(Chile)
Taiwan
Jamaica
Panama
Panama
Brazil
Philippines
Hawaii
Jamaica
Philippines
Hawaii
Mexico
Panama
California
Hawaii

Lai & Funasaki 1986
Jepson 1939b,
Moutia & Mamet 1946
Ripa et al. 1995

Table 4.9.2 (contÕd) Introductions for the biological control of Dysmicoccus brevipes
Country

From

Year

Result

Reference

Panama
Philippines
Hawaii
Hawaii

Hawaii
Guatemala
Mexico

1931
1931
1935
1930

Ð
+
+
+

Lai & Funasaki 1986
Clausen 1978
Clausen 1978
Clausen 1978

Hawaii

Guatemala

1924
1932
1931, 1951

Ð
Ð
Ð

Carter 1935
Carter 1935
Lai & Funasaki 1986

DIPTERA
CECIDOMYIIDAE
Cecidomyiid sp.
Cleodiplosis koebelei
Dicrodiplosis guatemalensis
Vincentodiplosis (= Lobodiplosis) pseudococci
DROSOPHILIDAE
Pseudiastata nebulosa
Pseudiastata pseudococcivora

Panama

4.9
Dysmicoccus brevipes
151

152

Biological Control of Insect Pests: Southeast Asian Prospects

BRAZIL
Bisexual D. brevipes is present wherever pineapples are grown, but it is not
recorded whether the parthenogenetic strain also occurs. Mealybug wilt was
rare in 1946 and large mealybug colonies uncommon and always covered
with soil mounds built by Solenopsis sp. ants. Sparse green spotting was
general on the leaves of these plants. Natural enemies were numerous and
included Anagyrus sp., Hambletonia pseudococcina and Pseudaphycus sp.
The latter parasitised mealybugs on the aerial parts of the pineapple plant, so
that large colonies were rare. It was never found on colonies under the soil
surface. Its life cycle lasts 14 to 20 days and up to 6 individuals may emerge
from a single host. Predators, mainly coccinellids, were generally present
and attacked the underground mealybug colonies (Carter 1949).
COOK IS
Carter (1973) reported that mealybug wilt of pineapple was a serious threat
to the newly-developing pineapple industry on Atui and Mangaia.
D. brevipes was present, but not D. neobrevipes, and the mealybug was
attended by Pheidole megacephala.
FIJI
D. brevipes is the main pest on pineapple and causes pineapple wiltÑthe
only record in the Pacific outside Hawaii of this condition. It is also a minor
pest of sugarcane. It is controlled to some degree by the coccinellids
Cryptolaemus sp., C. montrouzieri and Scymnus sp. (Lever 1945). Three
chrysopids were predators, including Chrysopa ramburi and C. irregularis
(Lever 1940).
GUATEMALA
Two coccinellid predators of D. brevipes were reported by Carter (1935),
Scymnus bilucenarius was widespread except in highest elevations, but it
apparently exerted little control; and Brachycantha sp. which was
uncommon. A drosophilid fly, Pseudiastata nebulosa, which was heavily
parasitised by two chalcidid wasps, was found and frequently in large
numbers. It was regarded as a promising species for biological control by
Carter (1935), who introduced it to Hawaii in 1932, but the colony died out.
Cecidomyiid predators were very common in the lowlands and occurred
occasionally in the highlands. They attacked large mealybug colonies on
fruit, but were apparently a minor control factor. No hymenopterous
parasitoids were discovered.
GOLD COAST
The parasitoid Pseudaphycus angelicus was reared on D. brevipes in the
laboratory (Anon. 1953) as also was Anagyrus ananatis from California
(Anon. 1957). Both were released in 1953Ð54 and the former became
established. Scymnus sordidus was also introduced from California, reared
on D. brevipes and released, but establishment is not reported (Anon. 1957).

4.9

Dysmicoccus brevipes

153

INDONESIA
Kalshoven (1981) reported that D. brevipes is attended by the ant,
Monomorium sp.
IVORY COAST
D. brevipes is bisexual with a sex ratio usually of 2 males to 1 female. Ants
attending the pineapple mealybug were species of Camponotus,
Crematogaster and Pheidole (Re‡l 1959).
JAMAICA
Here and throughout Central America D. brevipes colonies of any size were
invariably attended by Solenopsis ants. Where Solenopsis was not present
mealybug colonies were rare and small (Carter 1935).
MALAYSIA
The pineapple mealybug D. brevipes is the most serious insect pest of
pineapple in peninsular Malaysia. Infected plants become stunted and
reddish and eventually wilt. Fruit are small and unsuitable for canning. In
addition to wilting, the mealybug causes green spotting of the leaves, which
is not of economic importance (Khoo et al. 1991).
The bisexual form of D. brevipes has been studied in some detail by Lim
(1972). It was the only form found in 14 pineapple areas visited in Johore
and Selangor. The bisexual form had a life cycle 10 day shorter than the
parthenogenetic form in Hawaii, although it was less prolific.
MAURITIUS
D. brevipes was first reported as a major pest of pineapples in 1933, probably
having been introduced on pineapple suckers from Hawaii about 1931. It
was attacked by three native predators, the coccinellid Scymnus mauritiusi,
the drosophilid fly Gitonides perspicax, and the pineapple scale, Diaspis
bromeliae (Jepson 1939b) but they produced little impact. The coccinellid
Cryptolaemus montrouzieri was introduced from South Africa and liberated,
but did not become established (Moutia and Mamet 1946). The mealybug is
attended by Pheidole megacepahala, Solenopsis geminata and
Technomyrmex detorquens (Jepson and Wieke 1939).
PAPUA NEW GUINEA
D. brevipes is recorded attacking taro where it is subject to predation by the
coccinellids Cryptolaemus affinis, C. montrouzieri and C. wallacii (Shaw et
al. 1979).
PHILIPPINES
Two strains (grey and pink) of the pineapple mealybug are present and it is
suggested that they may have been introduced with planting material from
Hawaii, in which case they would represent D. neobrevipes and D. brevipes
respectively. The grey strain produces green spotting of the leaves, whereas
the pink strain produces only chlorotic spots. Some pineapple cultivars can
be seriously damaged by pineapple wilt which is caused by both strains. Two

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species of ants are almost invariably in attendance on the mealybugs, namely
Solenopsis geminata and Pheidole megacephala (Serrano 1934). Three
predators from Hawaii were established in 1931 (Cleodiplosis koebelei:
Cecidomyiidae, Scymnus margipallens and Hyperaspis silvestri: both
Coccinellidae), but there is no information on their effectiveness (Clausen
1978).
PUERTO RICO
D. brevipes is the most serious pest of pineapples, attacking the roots, leaves
and fruits of all varieties grown. Anagyrus ananatis was imported in 1936
from Brazil and both A. ananatis and Hambletonia pseudococcina in 1937
from Hawaii where they had been introduced from Brazil and Venezuela
respectively. Both were released in 1937 and 1938. Only half grown or older
hosts were attacked by H. pseudococcina, the life cycle from oviposition to
adult emergence taking 24 to 30 days. In one instance, 3 parasitoids emerged
from the same host. Frequent recoveries were made from the field.
Development from egg to adult took 19 to 21 days for A. ananatis and the sex
ratio was 1:1 (Bartlett 1939). Recoveries of this species were reported later
(Bartlett 1943). The larvae of a tineid moth, a pyralid moth and of a
cecidomyiid fly were found living in the waxy secretions around large
groups of mealybugs and were thought to be predators. Three species of ants,
including Solenopsis geminata were frequently observed carrying young
mealybugs around. There do not appear to be any recent reports of the
effectiveness of the introduced parasitoids (Plank and Smith 1940).
SOUTH AFRICA
Larvae of the moth Drosica abjectella were observed preying on D. brevipes
on pineapple in the Transvaal. The number of moth larvae and pupae per
pineapple plant varied from 1 to 15 and these occurred in the leaf axils. Large
nymphs and fully-fed mealybug females were preferred and moth larvae
each consumed an average of 6.5 hosts in the laboratory. In winter,
development of fourth instar D. abjectella took 15 to 26 days, the prepupal
period 1 to 3 days and the pupal stage 35 to 45 days. The adults lived for 3 to
6 days (BŸttiker 1957).
SRI LANKA
Both a bisexual and a parthenogenetic strain of D. brevipes are present. The
former, which causes green spotting of pineapple leaves, occurs in the west
and the latter in the Bibile area (Carter 1956).
TAIWAN
D. brevipes is widely distributed on pineapple up to about 750 m and also
occurs on banana (Chiu and Cheng 1957). It appears that D. neobrevipes is
also present. Natural enemies include the cecidomyiid predator
Schizobremia formosana and also coccinellids, but these are less effective

4.9

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155

(Takahashi 1939). Cryptolaemus, imported for control of D. brevipes and
other mealybugs, was only partially effective. A Scymnus sp., said to be
effective against D. brevipes in Saipan, was introduced, but no further
information is available (Sakimura 1935). The most abundant attendant ants
were Pheidologeton diversus, Anoplolepis longipes and Camponotus
friedae (Lee 1974).
TRINIDAD
The encyrtid Pseudaphycus dysmicocci was reared as a solitary parasitoid of
second instar female nymphs of D. brevipes on pineapple (Bennett 1955).
USA
D. brevipes was a common pest in southern Florida and Hambletonia
pseudococcina was introduced from Puerto Rico and liberated in 1954.
Although it became established, information on its abundance and
effectiveness is not available. It was postulated that the widespread use of
organic pesticides had probably reduced the parasitoid to very low levels
(Clausen 1956).

Major natural enemies
Anagyrus ananatis Hym.: Encyrtidae
This moderately polyphagous wasp is widespread in Brazil, where it is
known as a parasitoid of D. brevipes, but also parasitises, inter alia, rhodes
grass scale (Antonina graminis) and citrus mealybug (Planococcus citri)
(Gabriel et al. 1982). It was established in Hawaii (Carter 1937), where it
completes a generation in about 20 days.

Hambletonia pseudococcina Hym.: Encyrtidae
This parasitoid occurs as a bisexual form on D. brevipes in Brazil and as a
parthenogenetic one in Colombia and Venezuela. The bisexual form failed
to reproduce on D. brevipes in Hawaii, but the parthenogenetic form did so
successfully (Carter 1937). About 24 to 30 days is required for the life cycle
under tropical outdoor conditions and up to 4 individuals may emerge from a
single host (Compere 1936). In laboratory trials, H. pseudococcina showed
a high degree of specificity for D. brevipes and did not oviposit in 8 closely
related mealybug species. Of 3 additional mealybugs tested, it attempted
oviposition only in an unidentified species from a grass (Clancy and Pollard
1947).

Pseudiastata nebulosa Dipt.: Drosophilidae
This predator is native to Guatemala. It was introduced to Hawaii in 1924 but
did not become established. Except in the highlands of Guatemala, it is
frequently found in large numbers on a single plant, both above and below
the soil line. It was again introduced in 1932, but the colony died out. This

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Biological Control of Insect Pests: Southeast Asian Prospects

was possibly due to its requirement for large numbers of hosts, since 7 larvae
consumed over 100 medium to large sized hosts during the last half of their
larval lives. In Guatemala it is highly parasitised by two species of chalcidid
wasps. Carter (1935) regarded it as a promising species for biological
control.

Vincentodiplosis pseudococci Dipt.: Cecidomyiidae
This midge is native to Mexico and was established in Hawaii in 1950. In
neglected, weedy pineapple plantations in Hawaii, where the ant Pheidole
sp. was less reliant on mealybug honeydew, the midge was sufficiently
effective in controlling D. brevipes as to almost completely eliminate the
mealybug from the fruit. Many fruit were covered with the old webs
produced by midge larvae, but there were no live mealybugs. The midge is
rarely found on leaves, but its larvae are commonly found attacking large
mealybugs at the base of the fruit (Carter 1935, 1944).

Comments
It is very likely that D. brevipes evolved in South and/or Central America
and there is, therefore, a prima facie case to consider it as a candidate for
classical biological control in Southeast Asia and the Pacific. Indeed, there
are 2 parasitoid species (Anagyrus ananatis and Hambletonia
pseudococcina: both Eulophidae) and 2 predator species (Vicentodiplosis
pseudococci: Cecidomyiidae and Pseudiasta nebulosa: Diastadidae) that are
capable of reducing the mealybug to subeconomic levels. However, when
any one or more of a number of ant species attends the mealybug it is largely
protected from natural enemies and is able to build up to damaging numbers.
In the absence of both ants and natural enemies the unharvested honeydew it
produces leads to heavy growth of sooty moulds and there is transmission of
pineapple mealybug wilt. Since apparently suitable natural enemies are
available for introduction, the key to D. brevipes control is to deal with the
attendant ants. There are several ant baits that have been used successfully
for this purpose, but these are no longer registered for use in USA and,
hence, cannot be recommended. No doubt suitable replacements will soon
emerge. When extensive plantings of pineapples are made on areas where
the soil has been worked to kill weeds, very few ant colonies survive.
Recolonisation of the planted area occurs as colonies move along the rows
towards the centre of the crop. One cultural method recommended to delay
this spread is to plant several peripheral rows parallel to each boundary. Ants
will then move along these, rather than into the crop and control measures
can be concentrated on these rows (Rohrback et al. 1988). Promising results
obtained with the integrated management of D. brevipes in Hawaii suggest
that it would be well worth exploring similar methods elsewhere.

157

4.10

Hypothenemus hampei

China
India
Taiwan

Myanmar
20°

Laos

20°

+

+++

Thailand

Philippines

+

Cambodia
P
Vietnam

++

++

+

Brunei

Malaysia




Singapore
P

++
Indonesia

20°

Australia

Papua
New Guinea

20°

Hypothenemus hampei is native to Central Africa but has spread to most coffee
producing countries in Central and South America, to Southeast Asia and to several
Pacific countries. Significant coffee-growing areas not yet infested are Hawaii, Papua New
Guinea, Vanuatu and Solomon Islands.
It is a pest exclusively of coffee berries and does not damage the vegetative parts. It is
difficult to control with chemicals and, although plantation management methods can
reduce damage, the coffee berry borer remains an important pest.
The most important natural enemies appear to be 3 parasitic wasps native to Africa,
Cephalonomia stephanoderis, Phymastichus coffea and Prorops nasuta. The last of these
has been established in Brazil and Colombia without its own natural enemies, but has not
so far produced spectacular results. C. stephanoderis has been established recently in
Colombia, Ecuador, Mexico and New Caledonia, but it is too early to evaluate its impact.
Phymastichus coffea has not yet been established anywhere, but this is foreshadowed in
Colombia. The fungus Beauveria bassiana shows early promise. A thorough study is in
progress of the interactions of the parasites and other natural enemies of H. hampei and
the influence on them of various components of the environment. Optimism has been
expressed about the outcome of this program.

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Biological Control of Insect Pests: Southeast Asian Prospects

Hypothenemus hampei (Ferrari)
Coleoptera: Scolytidae
coffee berry borer

Rating
Southeast Asia
12

+++
++
+
P

Phil
Viet, Msia, Indo
Thai, Laos, Brun
Camb

Southern and Western Pacific
7

+++
++
P

N Cal
Fiji, Fr P
Pohnpei, Saipan

This account updates the chapter on H. hampei in Waterhouse and Norris
(1989) and the valuable review of Murphy and Moore (1990) in relation to
prospects for biological control.

Origin
FerrariÕs specimens, described in 1867 under the generic name
Stephanoderes, were obtained from trade coffee beans in France. There
appears to be no record of the country of origin of the material, but in 1867
infested beans could only have come from Africa or Saudi Arabia, because
Hypothenemus hampei did not obtain a footing on other continents until
later. The seed used to establish Coffea arabica in Saudi Arabia was
probably obtained from the Ethiopian highlands centuries ago. There the
coffee berry borer is native, though scarce (Davidson 1967), but if it did not
accompany the original seed it could easily have reached Saudi Arabia
through Arabian-African commerce over the centuries.
The wider range of parasitoids (3) in West Africa than in East Africa (2,
with one shared with the West) suggests that H. hampei has been in the West
for a very long time and may indeed have evolved there (L.O. Brun pers.
comm.).

Distribution
This was given by CIE (1981) as: Africa (Angola, Benin, Burundi,
Cameroon, Canary Is, Central African Republic, Chad, Congo, Ethiopia,
Fernando Poo, Gabon, Ghana, Guinea, Ivory Coast, Kenya, Liberia,
Malawi, Mozambique, Nigeria, Principe, Rio Muni, Rwanda, S‹o TomŽ,
Senegal, Sierra Leone, Sudan, Tanzania, Togo, Uganda and Zimbabwe);
Middle East (Saudi Arabia), Asia (Indonesia, Cambodia, Laos, Malaysia,
Philippines, Sri Lanka, Thailand, Vietnam); Central America (Guatemala,

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159

Honduras, Greater West Indies); South America (Brazil, Peru, Surinam);
Pacific (Caroline Is, Irian Jaya, Marianas Is, New Caledonia, Society Is).
To these must be added: South America (Colombia in 1988 (D. Moore
pers. comm. 1989), Ecuador (CIBC 1988a, b)); Central America (El
Salvador, Mexico (Baker 1984)); Asia (India (Kumar et al. 1990)) and the
Pacific (Fiji (Anon. 1979a), Tahiti (Johnston 1963)). In the West Indies,
Reid (1983) reported the beetle from Jamaica and Puerto Rico, but it has not
been reported from the lesser West Indies (Guadeloupe).
Significant coffee-growing or potential coffee-growing areas not yet
infested are Solomon Is, Vanuatu, Hawaii and Papua New Guinea, although
the latter is at serious risk because it shares a common land frontier with Irian
Jaya (Indonesia), where H. hampei has been present for many years
(Thomas 1961). H. hampei is not present in Australia.

Biology
The following description of the life cycle refers exclusively to the
relationship of the beetle with Coffea spp., and principally with Arabian
coffee C. arabica and robusta coffee C. canephora, the most important
cultivated species. Infestations of H. hampei occur in coffee seeds while
they are enclosed in berries on the trees and in berries that fall to the ground.
They will also continue vigorously in processed beans in storage, but not if
the moisture content has been reduced below 12.5% (robusta beans) or
13.5% (arabica beans) (Hargreaves 1935). Apart from dispersive flight by
adult females and the walking by males from one berry to another on the
same branch (P. Cochereau pers. comm. 1995), no part of the life cycle of
the coffee berry borer is passed through outside of the coffee bean.
The length of adult females of H. hampei of American origin is given as
1.4 to 1.7 mm (Wood 1982) and of Ugandan females and males as about
1.9 mm and 1.3 mm respectively (Hargreaves 1926). Malaysian females
averaged 1.58 mm and males 0.99 mm (Corbett 1933). Females outnumber
males by at least 10 to 1 and the ratio is frequently much higher. The beetle is
brown when it first emerges from the pupa but in the course of 4 or 5 days it
becomes generally black, although the prothorax has a slightly reddish tinge.
The prothorax is markedly humped, so that the down-turned head is not
visible from above. The tibiae have strong spines which doubtless assist in
such activities as tunneling through the pulp of coffee berries, ejecting the
resulting frass, and forcing a way to the soil surface should the berry become
interred.
Beetle attack tends to be aggregated on some trees or on particular
branches within trees, rather than evenly distributed (Baker 1984). The

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Biological Control of Insect Pests: Southeast Asian Prospects

fertilised female flies to coffee berries that have begun to ripen and bores an
entrance hole at the apex, either in the terminal pore or in the calyx ridge or
annulus of differentiated tissue that surrounds the pore. Sometimes this
annulus is perforated by several holes, but boring into the fruit elsewhere is
unusual. The colour of berries appears not to influence choice by females
seeking oviposition sites (Morallo-Rejesus and Baldos 1980). Young
berries, containing seeds with a watery endosperm, usually do not come
under attack if more advanced berries are plentiful. If they do they are soon
abandoned, after the female has fed on some of the pulp, and they then tend
to fall prematurely, being particularly vulnerable to infection by disease
organisms. The falling of such immature berries after being attacked often
contributes significantly to the amount of crop lost. After the endosperm has
passed from the watery to the milky stage in the course of maturation, beetles
invading the berry will wait in the pulp until the seed tissue is firm enough to
excavate (Penatos and Ochoa 1979). Rhodes and Mansingh (1981) cite
opinions to the effect that females that become static in this fashion for
several weeks (May to mid-July in the Jamaican lowlands) are in a state of
reproductive diapause. When available, berries are selected that are already
suitable for colonisation. The green berry is favoured for feeding and the ripe
(i.e. red) berry for breeding purposes, but the ripe berries are also very
suitable for feeding (Corbett 1933). In a ripe berry the female bores in one
operation through skin, pulp and the endocarp and pellicle surrounding one
of the two seeds (beans) present in each berry. Ejected frass may surround
the entrance hole during boring (Hutson 1936). Several days may be
occupied in this boring process, and the female then tunnels into the
endosperm, the substance of the seed, which is the basis of the worldÕs US$8
billion annual coffee crop (Bardner 1978). Berries that fall to the ground
may generate considerable numbers of beetles, but these are from their ontree infestation, since the female berry borers do not appear to visit fallen
fruit (Baker 1984).
The eggs are laid at the rate of two or three a day in batches of 8 to 12 in
chambers chewed out of the maturing bean tissue. Oviposition extends over
a period of three to seven weeks, each female producing from about 30 to
over 70 eggs. According to some authors, laying is not necessarily confined
to one bean because the female that has initiated an infestation may fly to
other berries during the oviposition period. According to others (e.g.
Bergamin 1943) the female that has initiated an infestation only quits the
bean when the first of her progeny emerge as adults. Others again (e.g.
Hargreaves 1935) state that she remains until all the bean tissue is consumed
or has deteriorated in some way. Most likely the pattern is quite flexible.
Eggs hatch in three to nine days and young larvae bore into intact bean

4.10

Hypothenemus hampei

161

tissue, making pockets opening off the main tunnel made by the parent
female. Male larvae pass through their two instars in the course of about 15
days, and the females pass through three instars in about 19 days (Bergamin
1943). Morallo-Rejesus and Baldos (1980) state that the female, like the
male, passes through only two instars, indicating the need for further
biological study. The long period over which oviposition is spread results in
larvae in all stages of development being present in one bean. At the end of
the larval stage there is a non-feeding or prepupal stage lasting about two
days. The insect then pupates, without any cocoon formation, in the galleries
excavated by the larvae. The pupal stage is passed through in four to nine
days. The period from egg-laying to the emergence of the adult is 25 to 35
days. The temperatures at which the preceding records were made are
generally not specified, but chiefly they relate to warm lowland coffee
plantations. Bergamin (1943) recorded that at 24.5¡C in Brazil the period
from egg-laying to emergence of adult averaged 27.5 days. De Oliveira
Filho (1927) found that in Brazil shade temperatures of 20 to 30¡C suited the
females best. Below 15¡C they became inactive, endeavouring to hide,
preferably in coffee berries, but sometimes by boring into beans, maize,
peanuts or cotton seed of suitably low moisture content. They can survive
temperatures just below 0¡C, which however are rarely experienced in
Brazilian coffee growing areas. At higher elevations development is
somewhat prolonged (Le Pelley 1968) and H. hampei has a low pest status in
highland coffee growing areas in East Africa and Java (Haarer 1962). Baker
et al. (1989) conclude that the optimum mean annual temperature for the
beetle is 23¡ to 25¡C and that parasitoids for biological control should be
sought from a similar climate.
The adult males emerge from the pupa earlier than the females. Their
hindwings are short and they do not fly, but remain in the bean, fertilising
their female siblings as they emerge. Each male can fertilise two females a
day and up to 30 in his lifetime which may extend to 103 days, although
averaging less. Corbett (1933) states that the males seldom leave the berries,
and then only when they are near death. The vast majority of observers
confirm that males never leave the berries. Quite likely they may move from
bean to bean within a fruit, thereby gaining access to females other than their
sisters. Parthenogenesis does not occur and, although unfertilised females
may produce some eggs, these do not hatch. One insemination is sufficient to
allow a female to lay fertile eggs throughout her reproductive period.
Corbett (1933) stated that, if there are no males in the seed when the females
emerge from the pupal skin after their hardening period of a few days, they
leave via the entrance hole and seek males in other infested berries. MoralloRejesus and Baldos (1980) suggest that sex pheromones secreted by the
males guide such females to appropriate berries.

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Biological Control of Insect Pests: Southeast Asian Prospects

Females that have been fertilised remain in the ÔparentalÕ bean for three
or four days, by which time they have become sexually mature. They then
leave the berries via the entrance holes and enter others and, after a
preoviposition period of 4 to 20 days, commence egg laying. Females have
been known to live up to 282 days, and longevity was stated by Bergamin
(1943) to average 156 days. According to Corbett (1933), in Malaysia
females survived 81 days without food. There is time for a succession of
seven or eight generations a year in lowland coffee growing areas but, on
account of the long reproductive period, there are few clearcut population
peaks to indicate generations.
Life history studies have been carried out with artificial infestations of
coffee trees in southern Mexico (Baker et al. 1992). Morallo-Rejesus and
Baldos (1980) observed in the Philippines that beetles are to be observed in
flight from 3.00 pm, considerable numbers being visible in the air between
4.00 and 5.00 pm. Corbett (1933) observed in Malaysia that females fly at
any time during the day, but in greatest numbers between 2.00 and 5.00 pm,
reaching a peak between 3.30 and 4.30 pm. De Oliveira Filho (1927) states
that, in Brazil, females Ôare activeÕ on warm nights, but it is unclear whether
this implies flight activity. Kalshoven (1981) states that, in Java, females
start flying during the midday period, and that they assemble under leaves
and in other places where they dance up and down like gnats. Such activity
can have no sexual significance, seeing that the males do not leave the seeds,
and its function is obscure. In Java flights up to 345 m have been measured
(Leefmans 1920). In Mexico, Baker (1984) carried out experimental studies
on flight. Females flew freely in the laboratory for up to 22 minutes, tending
to hover or move forward only slowly. In tethered flight, and thus relieved of
supporting their own weight, they could fly non-stop for 100 minutes, with a
combined aggregate of three hours. Such enduring activity, combined with
its afternoon peak of activity, suggests that, in their habits, the beetles
resemble aphids and thrips in being adapted to exploiting periods of
maximum convection in the atmosphere, so achieving long-distance travel
with their own contribution serving chiefly to keep them aloft. De Oliveira
Filho (1927) states that local flight occurs when the fertilised female is
seeking a place to lay, when (oviposition having commenced) she emerges
to seek moister berries after having been driven out by the heat of the sun. It
also occurs when unfertilised females seek males (as they do if there are
none in the berry when they emerge), when seeds are waterlogged, are
overcrowded with adults and larvae, or when the beetles are disturbed.
Rhodes and Mansingh (1981) state that, in the Jamaican lowlands,
beetles in dry berries remain in diapause for five months, from midDecember to mid-May. Baker (1984) found that in mid-spring in Mexico

4.10

Hypothenemus hampei

163

females tended to remain in fallen coffee berries at a time when temperatures
in berries in the trees ranged up to an inimical 37¡C. Soaking the fallen
berries in water induced many to emerge, but they did so in a specific
pattern, some seven to eight hours after dawn. Possibly the soaking
simulated rain that would have made the environment generally more
favourable. Baker reminds us that coffee is naturally an understorey plant in
tropical forest and, by sheltering in fallen berries, beetles may avoid the
harmful effects of strong, direct sunlight. Infestations are carried over
between peaks of fruiting by the breeding that occurs in late-maturing
berries, or else in those that have fallen to the ground. Females can survive
for up to two months in buried beans (Clausen 1978).
It is probable that intercontinental travel is brought about by the agency
of man, rather than by travel in moving air masses. Infested beans are an
obvious vehicle for dispersal, but there are other avenues to which
quarantine measures should be applied. In Jamaica, Reid (1983) observed
females among banana trash used in packing boxes on their way to the
boxing plant. Commonly, beetles disperse in sacks, empty or otherwise, and
on the clothing and equipment of plantation workers. Under some conditions
beetles bore for protection into wood or other materials to the extent that
Baker (1984) suggested that authorities in beetle-free areas should think
very carefully before allowing entry of untreated plant material from an
infested area.

Host plants
An important aspect of the biology of any insect pest is its host range. In
Africa, in addition to its regular hosts in the genus Coffea, Hypothenemus
hampei has been reported from fruit, pods or seeds of species of Centrosema,
Crotalaria, Phaseolus and Tephrosia (Fabaceae), Leucaena (Mimosaceae),
Caesalpinia (Caesalpiniaceae), Hibiscus (Malvaceae), Rubus and
Oxyanthus (Rubiaceae), Vitis (Vitaceae) and Ligustrum (Oleaceae), but
these associations are all considered to reflect only casual feeding by adults.
In Africa, the only species outside of the genus Coffea in which immature
stages have been found is Dialium lacourtianum (Caesalpiniaceae) (Le
Pelley 1968).
A review of hosts of the genus Hypothenemus was made by Johanneson
and Mansingh (1984) who concluded that H. hampei was monophagous
according to their criteria, as it attacked only six species of the genus Coffea.
However, they listed 23 other species of plants in 11 families from which
H. hampei has been recorded, but only as adult females. In contrast, in the
Philippines, Morallo-Rejesus and Baldos (1980), whose paper was

164

Biological Control of Insect Pests: Southeast Asian Prospects

overlooked by Johanneson and Mansingh, reported finding eggs, larvae and
pupae of H. hampei in Leucaena leucocephala (Mimosaceae), Gliricidia
sepium (Fabaceae), two species of Psychotria (Rubiaceae) and one of
Dioscorea (Dioscoreaceae). In laboratory tests they found that adults of
H. hampei fed on pods of four of those species and also on the pods of 19
other species in 9 orders.
Such feeding tests may be of little significance, however, since the
survival times recorded are greatly exceeded by the periods for which the
beetles are capable of withstanding starvation (Corbett 1933). If the insects
were correctly identified, the host plants recorded in the Philippines may
help to support a population of H. hampei when no coffee berries are
available. Reexamination of the host range is necessary. For example Cohic
(1958) found H. hampei attacking loquat in New Caledonia, and this
relationship, though abortive in the end, has not been reported anywhere else
in the world. In connection with host records, Johanneson and Mansingh
(1984) drew attention to the problem of misidentification of species of
Hypothenemus, a notoriously difficult genus, and also to misinterpretation
of the relative roles of various host plants. Hargreaves (1935) found adults of
four species of Hypothenemus other than H. hampei in seed of Phaseolus
lunatus (Fabaceae) in Uganda, and Gonzalez (1978) alludes to species of
Hypothenemus, known as false coffee borers, which occur from Mexico to
northern Argentina and greatly complicate quarantine procedures. Such
insects would, of course, also raise difficulties in host plant studies. A
thorough review of true hosts of H. hampei would be relevant to a number of
aspects of the control of this pest.

Damage
Hypothenemus hampei is a pest exclusively of the immature and mature
coffee berries and does no damage whatsoever to the vegetative parts of the
plant. Prates (1969) showed that adults of H. hampei were strongly attracted
to extracts of green or ripe coffee berries, but not to extracts of coffee leaves
or flowers. Significant losses are caused by the female beetles feeding on
young berries which are too immature to colonise but which, after the beetle
has gone, are invaded by decay organisms, and so fall prematurely. In Java
Leefmans (1920) found that 80% of green berries that had fallen through
being bored by the beetle contained decayed beans as against 46.5% in
unbored beans that had fallen through other causes. In the Congo, Schmitz
and Crisinel (1957) found that 64 to 82% of shed berries had fallen on
account of H. hampei attack. Such losses caused by attack on immature
fruits are serious enough, but the bulk of the damage done by this beetle is to

4.10

Hypothenemus hampei

165

the endosperm of the mature beans, which may be extensively damaged or
even completely destroyed. Even lightly bored beans acquire a distinctive
blue-green staining which significantly reduces their market value (McNutt
1975), but the further tunnelling by the beetles and their larvae brings about
progressive degradation, so that the coffee bean is reduced to a mass of frass.
Market requirements demand the removal of damaged berries from the
harvested crop, which is done by various mechanical processes (fortunately
bored beans float), supplemented even by handpicking. The beans removed
by such processing are not necessarily a total loss, but can go into only low
grade fractions at a much reduced market rate.
In New Caledonia, where no control measures had been implemented,
H. hampei was found to have attacked 80% of berries (Cohic 1958). Other
examples of losses due to Hypothenemus hampei are given by Le Pelley
(1968). Severe infestations in Uganda may result in 80% of berries being
attacked. In the Ivory Coast, damage of 5% to 20% of berries is common,
rising to 50% to 80% in some cases. In the Congo, boring of up to 84% of
green berries and up to 96% of hard berries has been recorded and, in
Tanzania, records indicate up to 96% boring of hard berries. In Malaysia
there have been records of up to 90% of beans damaged. In Java crop loss of
40% was recorded in 1929, and in Brazil 60% to 80% losses have been
experienced. The above figures apply for the most part to poorly managed
situations, and crop losses can be reduced by appropriate management, but
the beetle is a constant latent threat if vigilance is relaxed. In Jamaica, Reid
(1983) estimated that 27% of the berries harvested were damaged. The
studies of Reid and Mansingh (1985) showed that H. hampei was
responsible for 20.9% reduction of exportable beans in the Jamaican crop of
1980Ð81. Baker (1984) reported that, in southern Mexico, the attack of
H. hampei on coffee plantations was so severe that, in spite of application of
insecticides in some places in 1982, no berries were harvested because it
would not have been economical to do so.
Proper processing results in beans of moisture content too low to permit
the borer to multiply. This is below 13.5% for arabica coffee and below
12.5% for robusta coffee. If coffee beans are stored with significantly higher
moisture content, beetle reproduction continues. Thus Morallo-Rejesus and
Baldos (1980) found that, in the Philippines, infestation in coffee beans
stored before drying rose from 20% to 100% in six weeks.

166

Biological Control of Insect Pests: Southeast Asian Prospects

Natural enemies
The cryptic nature of the immature stages and the male of H. hampei makes
them relatively inaccessible victims for predators, and the only one recorded
is the non-specific Javanese bug Dindymus rubiginosus. This bug draws the
borers from the berries with its beak and sucks them dry. Le Pelley (1968)
states that it is of little importance.
The most important parasitic wasps, Cephalonomia stephanoderis,
Prorops nasuta, Phymastichus coffea and Heterospilus coffeicola are, of
course, African in origin and are dealt with in some detail by Klein Koch et
al. (1988) and Feldhege (1992). C. stephanoderis which is restricted to West
Africa is the most important species in Ivory Coast, parasitising up to 50% of
H. hampei in black berries (Ticheler 1961). The potential of H. coffeicola in
biological control requires further study because its larvae are not very
specific, but the other three species appear to have a narrow enough host
range to make them acceptable from this point of view. A fifth parasite,
Goniozus sp. is recorded, but without further data, from Ivory Coast
(Cochereau and Potiaroa 1994).
In addition to the identified arthropod natural enemies (Table 4.10.1),
Leefmans (1924a) recorded a non-specific parasite that attacks beetles in
newly infested berries and Hargreaves (1926) found an unidentified
hymenopterous parasitoid in Uganda, now known also from Togo as
Aphanogmus dictynna and considered to be a hyperparasitoid of
C. stephanoderis or P. nasuta (Feldhege 1992). Morallo-Rejesus and
Baldos (1980) reported the presence in the Philippines of a braconid and an
encyrtid parasitoid of H. hampei, both unidentified, and presumably nonspecific members of the local fauna.
Some ants attack the borer. Swallows and other small birds that feed on
the wing consume flying adults of H. hampei.
The parasitic fungus Beauveria bassiana has been observed attacking
H. hampei in Brazil (Averna-Sacc‡ 1930; Villacorta 1984), Jamaica
(Rhodes and Mansingh 1981), Cameroon (Pascalet 1939), Congo (Sladden
1934; Steyaert 1935), Ivory Coast (Ticheler 1961), India (Balakrishnan et al.
1994), Java (Friederichs and Bally 1922) and in New Caledonia (Cochereau
and Potiaroa 1994). Steyaert (1935) and Averna-Sacc‡ (1930) studied the
seasonal cycle and the former also made studies of the infectivity and
epidemiology of the fungus of which there are many strains. In an analysis of
16 isolates from H. hampei adults from 10 countries in Latin America,
Africa, Asia and the Pacific, 13 formed a homogenous group with very
similar electrophoretic and physiological characteristics, suggesting a
distinct strain associated widely with the coffee berry borer. Of the

4.10

Hypothenemus hampei

167

remaining 3 strains, one from Sri Lanka is suspected as having degenerated
during some 63 years in storage, but the others (from New Caledonia and
Kenya) are probably distinct entities (Bridge et al. 1990). The New
Caledonian strain presumably attacked some other host until H. hampei
arrived there in 1948. It is a particularly virulent strain and can cause death of
H. hampei in 5 days (Cochereau et al. 1994). Moist, warm conditions favour
the incidence of this pathogen, and heavy rain is thought to enhance the rate
of infection. If spraying with fungal preparations is avoided on the day of
release of parasitoids, adverse effects on the latter are not observed (Reyes et
al. 1995). Friederichs (1922) recommended the encouragement of heavy
shade to increase the incidence of fungal pathogens, but this runs counter to
the fact that intensity of shade must often be reduced to encourage
hymenopterous parasitoids which, however, may still prove to be of minor
significance in population regulation. Certainly, Klein Koch (1989a)
considered Beauveria to be the most important natural enemy of H. hampei
in Ecuador. In Colombia, preparations of selected strains of Beauveria in oil
have produced 20 to 95% adult mortality, slightly higher than the 20 to 90%
produced by selected strains of Metarhizium (P. Cochereau, pers. comm.
1995). Varela and Morales (1996) have characterised a number of Beauveria
isolates and their virulence against H. hampei.
Pascalet (1939) advocated the spraying of suspensions of spores, before
sunrise, but no results are available. As with so many parasitic fungi, its
application would be limited by intolerance of dry conditions. Another
fungus that attacks H. hampei, Paecilomyces javanicus, is Afro-Asian in
distribution and wide spectrum in its host range (Samson 1974), attacking
also Lepidoptera. Its use against H. hampei appears not to have been
attempted.
There appears to be only one record of nematodes attacking H. hampei in
the field (Varaprasad et al. 1994), but in addition, Allard and Moore (1989)
showed that a Heterorhabditis sp. could cause high mortality of both adult
and larval H. hampei under laboratory conditions and that infective
juveniles were produced from adults and larger larvae. Spraying of
nematodes on fallen berries might remove the need to collect them (which
involves much labor), leaving them to provide mulch. Dispersal of infected
adults may also spread the nematodes into the pest population. Further work
with nematodes is clearly desirable.

Natural enemies of Hypothenemus hampei

168

Table 4.10.1

Species and type
HEMIPTERA

Country

Reference

Comment

PYRRHOCORIDAE (Predator)
Dindymus rubiginosus

Java

Wurth 1922

Not specific

A promising parasite

Uganda

Betrem 1961; Ticheler 1961;
Cochereau & Potiaroa 1994;
Klein Koch et al. 1988
Cochereau & Potiaroa 1994
Klein Koch et al. 1988
Klein Koch et al. 1988
Klein Koch et al. 1988
Klein Koch et al. 1988
Rangi et al. 1988
Klein Koch et al. 1988
Klein Koch et al. 1988;
Klein Koch et al. 1988;
Waterston 1923
Benoit 1957

Uganda

Waterston 1923

Possibly hyperparasitic

Ivory Coast
Kenya
Togo

Cochereau & Potiaroa 1994
La Salle 1990
Klein Koch et al. 1988

HYMENOPTERA

Goniozus sp.
Prorops nasuta

Scleroderma cadaverica
CERAPHRONIDAE
Aphanogmus (= Calliceras) dictynna
EULOPHIDAE
Phymastichus coffea (attacks
adult beetles)

Togo
Ivory Coast
Cameroon
Congo
Ivory Coast
Kenya
Tanzania
Togo
Uganda

Causes severe dermatitis in man

Biological Control of Insect Pests: Southeast Asian Prospects

BETHYLIDAE (ectoparasites of immature stages)
Cephalonomia stephanoderis
Ivory Coast

Table 4.10.1 (contÕd) Natural enemies of Hypothenemus hampei
Species and type
HYMENOPTERA
BRACONIDAE
(ectoparasitoid and predator)
Heterospilus coffeicola

FORMICIDAE
(predator)
Crematogaster curvispinosa

Country

Reference

Comment

Uganda
Tanzania
Cameroon
Congo

Schmiedeknecht 1924
CIBC 1988b
Klein Koch et al. 1988
Klein Koch et al. 1988

Kills larvae with sting
Attacks larvae of other parasites of
H. hampei Ñ also may be
cannibalistic

Brazil

Pinto da Fonseca & Araujo 1939 Can cause high mortality of immature
stages in coffee berries

New Caledonia

P. Cochereau pers. comm.

India

Moore & Prior 1988
Varaprasad et al. 1994

ACARI
Pyemotid mite

4.10

NEMATODA
Heterorhabditis sp.
Panagrolaimus sp.
HYPHOMYCETES
Beauveria bassiana
(= Botrytis stephanoderis)
Metarhizium anisopliae
Nomuraea rileyi
Paecilomyces (= Spicaria) javanicus
P. tenuipes

Java
Cameroon

Java

Friederichs & Bally 1922
Pascalet 1939
Moore & Prior 1988
Moore & Prior 1988
Friederichs and Bally 1922;
Samson 1974
Moore & Prior 1988

Cosmopolitan, in a variety of strains

Usually recorded from Lepidoptera
Indonesia, Asia, Africa

Hypothenemus hampei

FUNGI

169

170

Biological Control of Insect Pests: Southeast Asian Prospects

Attempts at biological control
Published information is summarised in Table 4.10.2, but there were
probably a number of transfers of parasites within Africa and perhaps South
America that have gone unrecorded. In the past decade the International
Institute for Biological Control had adopted the policy of breeding African
parasitoids in England on H. hampei in coffee beans from the country of
destination. This is because of the possibility that the wasps might carry
spores of fungal diseases of coffee, especially new strains of coffee leaf rust
(Hemileia vastatrix) and coffee berry disease (Colletotrichium coffeanum)
(Moore and Prior 1988; Rangi et al. 1988; Nemeye et al. 1990; Murphy and
Rangi 1991). The danger of fungal transmission could also be reduced by
breeding H. hampei on an artificial diet (Brun et al. 1993; Perez et al. 1995;
Villacorta 1985).

Africa
CAMEROON
Pascalet (1939) recommended the introduction of Heterospilus coffeicola,
Prorops nasuta and Beauveria bassiana to any plantations lacking them.
There is no record that this was implemented anywhere, nor whether any or
all of the organisms were not already generally present.
CONGO
Sladden (1934) and Leroy (1936) suggested that, by breeding and liberating
them, it would be possible to increase the efficiency of P. nasuta and
H. coffeicola, which he knew to be already present in the Congo and he made
a similar suggestion for fungus diseases. However, there is no indication of
the extent to which this was done.
KENYA
Prorops nasuta was sent from Uganda to Kenya in 1930 (Greathead 1971),
but according to Evans (1965) that wasp and H. coffeicola were probably
native there. Abasa (1975) considered that parasites were of doubtful value
in controlling H. hampei in Kenya.
UGANDA
Prorops nasuta and Heterospilus coffeicola are both native to Uganda.
Hargreaves (1935) considered that some areas lacked these parasites, and so
he introduced cultures from Kampala County, north of Lake Victoria, to
Bwamba County on the western border. He stated that this introduction
resulted in a great reduction in the previously intense infestation of coffee
berry borer but, in view of the natural occurrence of P. nasuta over a wide
area to the west of the Ugandan border (Le Pelley 1968), it seems unlikely
that the distribution was discontinuous and that it was lacking in Bwamba

4.10

Hypothenemus hampei

171

County. HargreavesÕ claims that the introduction brought about a great
reduction in the impact of the coffee berry borer in Bwamba County must be
treated with reserve, the more so since De Toledo Piza and Pinto da Fonseca
(1935) state that neither P. nasuta nor H. coffeicola appeared to control the
borer in nearby Kampala. More recently, P. nasuta was reported to achieve
20% parasitisation in western Kenya in the dry season (Barrera et al. 1990b).

Asia
SRI LANKA
Stock of P. nasuta and H. coffeicola from Uganda were liberated in Sri
Lanka in 1938, but neither species became established (Hutson 1939).
INDONESIA
The introduction of Prorops nasuta to Java from Uganda in 1923 was the
earliest attempt to bring about the biological control of H. hampei which had
first been reported in Java in 1909 (Kalshoven 1981). P. nasuta was found to
be easily propagated (Leefmans 1924a), was distributed widely in
considerable numbers (Begemann 1926) and became established (Le Pelley
1968). However, it apparently could not maintain itself and was still being
bred for distribution in 1928 (UltŽe 1928) and in 1932 (Betrem 1932;
Schweizer 1932; UltŽe 1932).
Leefmans (1924a) drew attention to the fact that the P. nasuta did not
thrive in shade, and that it flourished best in black berries which tend to be
most abundant after harvest, when the parasite is least needed. The former
problem was solved by appropriate pruning but, despite improvements in
management to favour it and the long period spent in breeding and
disseminating it, the parasite seems not to have become established in Java
(Clausen 1978; Kalshoven 1981).
Cultures of Heterospilus coffeicola were taken to Java from Uganda
along with those of P. nasuta in 1923, but the wasp appears not to have been
released. Leefmans (1924a) seems to have concluded that it was likely to be
incompatible with P. nasuta.

172

Table 4.10.2

Introductions for the biological control of Hypothenemus hampei

Country and species liberated
BRAZIL

Year

From

Result

Reference

Cephalonomia stephanoderis
Prorops nasuta

?
1929

?
Uganda

+
+

Benassi & Berti-Filho 1989
Hempel 1933; Yokoyama et al. 1978

Cephalonomia stephanoderis

1988

Kenya via U.K.

+

Prorops nasuta

1995

C. Klein Koch pers. comm. 1995;
Sponagel 1993
Bustillo et al. 1995;
Portilla & Bustillo 1995

COLOMBIA

ECUADOR
Cephalonomia stephanoderis

1988

Togo via U.K.

+

Prorops nasuta

1987Ð1990
1988

Kenya via U.K.
West Africa

Ð
Ð

1988

Kenya via U.K.

+

Sponagel 1993; C. Klein Koch pers.
comm. 1995

1988
1993-1995

Kenya via U.K.

?

Sponagel 1993
Garcia & Barrios 1996

1988

Kenya via U.K.

?

Sponagel 1993

CIBC 1988b; Klein Koch 1989a,b,c;
Klein Koch et al. 1988; Delgado et al.
1990; Sponagel 1993
CIBC 1988a; Klein Koch et al. 1988;
Rangi et al. 1988; Murphy & Rangi
1991; Sponagel 1993

EL SALVADOR
Cephalonomia stephanoderis

GUATEMALA
Cephalonomia stephanoderis

HONDURAS
Cephalonomia stephanoderis

Biological Control of Insect Pests: Southeast Asian Prospects

+

Table 4.10.2 (contÕd) Introductions for the biological control of Hypothenemus hampei
Country and species liberated
INDONESIA

Year

From

Cephalonomia stephanoderis
Heterospilus coffeicola

1988
1923
1931
1923Ð
1925

Uganda
Uganda
Uganda

1930

Uganda

Cephalonomia stephanoderis

1988Ð1989

Togo via U.K.

+

Prorops nasuta

1988Ð1989

Kenya and Togo via U.K.

?

1993

Ivory Coast

+

1932

Uganda (Kampala county)

1962
1964?

Brazil

Ð

Clausen 1978
De Ingunza 1964

1938
1938

Uganda
Uganda

Ð
Ð

Hutson 1939
Hutson 1939

Prorops nasuta

Result
?
not liberated
?
Ð

Reference
Sponagel 1993
Kalshoven 1981
Le Pelley 1968
Begemann 1926
Kalshoven 1981

KENYA
Prorops nasuta

already present Evans 1965

MEXICO

4.10

Barrera et al. 1990 a, b;
CIBC 1988b
Barrera et al. 1990a, b;
Murphy & Rangi 1991

NEW CALEDONIA
Cochereau & Potiaroa 1994

UGANDA (BWAMBA COUNTY)
Prorops nasuta

+
Hargreaves 1935
?already present

PERU
Prorops nasuta

SRI LANKA
Heterospilus coffeicola
Prorops nasuta

Hypothenemus hampei

Cephalonomia stephanoderis

173

174

Biological Control of Insect Pests: Southeast Asian Prospects

Pacific
NEW CALEDONIA
Infestation of coffee berries with H. hampei ranges from 0% to 100%, with
an overall average of 33%. C. stephanoderis from West Africa was released
in 1993 and recovered almost a year later. However, wherever the
aggressive, little red fire ant (Wasmannia auropunctata, introduced around
1970) is present this parasitoid is unable to survive. When the fire ant is
eliminated from a plantation by banding the trees with insecticide the wasp is
established. Ant control is, thus, a prerequisite for biological control
(Cochereau and Potiara 1994; P. Cochereau pers. comm. 1995).
Phymastichus coffea is currently under consideration for liberation
(P. Cochereau pers. comm.). Cochereau et al. (1994) have examined in some
detail the effectiveness against H. hampei of a virulent New Caledonian
strain of Beauveria bassiana, which shows considerable promise in the field.

Central America
GUATEMALA
Cephalonomia stephanoderis was mass produced and released during 1993
to 1995. Infestation by H. hampei was reduced 75%, to 2.7 to 5.3% in 1993
and to 0.4 to 0.9% in 1994, but an increase was observed in 1995 (1.6 to
2.4%, compared with the control of 3.8% infestation), resulting in 48%
control (Garcia and Barrios 1996). The cost of mass liberations of
C. stephanoderis was comparable with that of chemical control (Decazy et
al. 1995).
MEXICO
Cephalonomia stephanoderis from Togo and Prorops nasuta from both
Togo and Kenya were raised in U.K. in coffee beans from Mexico before
being sent there for mass production and liberation during 1988 and 1989.
C. stephanoderis has become established, but the situation with P. nasuta is
unclear (Barrera et al. 1990a, b). The impact of these parasitoids remains to
be reported.

South America
BRAZIL
Prorops nasuta was imported into Brazil from Uganda in 1929, and by 1933
it was established in several coffee plantations (Hempel 1933, 1934). As in
Java, breeding and distribution continued and in 1937 (Anon. 1937) it was
stated to be of considerable value in controlling the coffee berry borer in S‹o
Paulo, but only if its numbers were boosted by rearing between coffee
production seasons. Puzzi (1939) studied the reproduction of the parasite in

4.10

Hypothenemus hampei

175

relation to that of its host in Brazil and concluded that, in theory, it was more
prolific, but that the efficiency of the parasite was limited by the tendency of
the female to remain in one berry. De Toledo (1942) examined rates of
parasitisation, but his figures do not suggest that the wasp could have been
having any significant impact. De Toledo et al. (1947) were only mildly
enthusiastic about the value of the wasp, mentioning a continuing need for
repeated liberations and the requirement for boosting the effect of the
parasite by cultural practices. Le Pelley (1968) stated that, at that time,
Brazilian entomologists appeared satisfied that P. nasuta was of value in
their country, but he could find no conclusive evidence that the amount of
routine work required for the control of H. hampei had decreased.
Yokayama et al. (1978), considered that the climate of the S‹o Paulo district
in Brazil was unfavourable for this wasp, in which the growers lost interest
when BHC was found to give satisfactory control. Nevertheless, they
reported that it had recently been recovered in coffee plantations in S‹o
Paulo, having survived pesticide usage, severe droughts and winter frosts.
The fact that P. nasuta has been transferred more recently to areas in Brazil
where it is not established indicates that the wasp is considered to be of some
value (Ferreira and Batistela Sobrinho 1987).
Although there is no record of its release, a species of Cephalonomia,
presumably C. stephanoderis was recovered in the field in Brazil between
1986 and 1988 (Benassi and Berti-Filho 1989).
A survey of natural enemies of H. hampei in northern Espirito Santo
from 1986 to 1994 revealed 3 parasitoids (Prorops nasuta, Cephalonomia
sp., and a species of Proctotrupoidea), an ant predator (Crematogaster
curvispinosa) and a fungus (Beauveria bassiana) (Benassi 1995).
COLOMBIA
The rate of population increase of H. hampei in the field has been studied by
Gaviria et al. (1995). A major program of integrated management
commenced in 1992, involving local strains of the fungi Beauveria bassiana
and Metarhizium anisopliae and parasitoids, in particular Cephalonomia
stephanoderis and Prorops nasuta (CABI: IIBC 1993; C. Klein Koch pers.
comm. 1994; Bustillo et al. 1995). Methods for mass production of
C. stephanoderis and Prorops nasuta are provided by Portilla and Bustillo
(1995). Sixty million parasitoids were released and 100 tons of B. bassiana
and M. anisopliae were applied (Bustillo et al. 1995).
ECUADOR
Klein Koch (1986) proposed the introduction of 3 parasitoids from Africa,
Prorops nasuta, Heterospilus coffeicola and Cephalonomia stephanoderis.
C. stephanoderis was first introduced from Togo in 1988 and P. nasuta from
Tanzania and Kenya in 1987Ð88 and Togo in 1988 (Klein Koch 1989c).

176

Biological Control of Insect Pests: Southeast Asian Prospects

Liberations continued in subsequent years with some 920000 of the former
species and 30,000 of the latter being released in 1992. Both species are now
well established and having a significant effect. In field experiments with
caged coffee trees 86% of berries on the bush and 87% on the ground
contained C. stephanoderis and up to 52% and 31% parasitisation
respectively was recorded from tree and ground berries in the open (Klein
Koch 1989b,c, 1990). However the results are poor in the Amazon region of
the country where the rainfall is very high. Elsewhere, as part of an
integrated approach, infestation levels on Coffea arabica are as low as 0.4 to
1.4%. Recently introduced catimor varieties are resistant to coffee rust, so
sprays are no longer required (Klein Koch pers. comm. 1994). In addition,
the fungus Beauveria bassiana and the ant Azteca sp. cause considerable
mortality of H. hampei when humid weather conditions prevail (Klein Koch
et al. 1987).
PERU
According to De Ingunza (1964) Prorops nasuta was introduced from Brazil
to Peru in 1962, but failed to become established.

Major parasite species
Cephalonomia stephanoderis Hym.: Bethylidae
Cephalonomia stephanoderis is a small black bethylid wasp which is native
to West Africa (Ivory Coast, Togo). The females, which are 1.6 to 2.0 mm in
length, enter bored coffee berries and deposit eggs on the ventral surface of
final stage larvae and prepupae of H. hampei. Its larvae feed as ectoparasites,
exhausting the tissues of the host in 4 to 6 days, then spinning a silken
cocoon in which to pupate. The pupal stage lasts about 15 days. Fertilisation
takes place in the berry where the wasps emerge, and seemingly, the males,
although fully winged, remain there after the females have left. Females
must feed for two days at 27¡C or 6 to 11 days at 24¡C before they can
mature eggs. Adult females feed by preference on H. hampei eggs and
young larvae but also on prepupae and they chew holes in the intersegmental
membrane of adult beetles, between the prothoracic and mesothoracic
tergites, and feed on the haemolymph. Females cannot produce eggs on a
diet of borer eggs or adults alone, but need to feed first on the larvae and/or
prepupae of the borer. They can lay up to 70 eggs (Barrera et al. 1989, 1993;
Abraham et al. 1990; Wegbe 1990; Infante et al. 1994a ) and can distinguish
between parasitised and unparasitised hosts (Barrera et al. 1994). In the
Ivory Coast, Koch (1973) found that adult C. stephanoderis each required
two eggs, two larvae or two adults per day for survival. At the end of the
coffee season H. hampei populations were reduced by parasitisation by 20%

4.10

Hypothenemus hampei

177

to 30%, but by not more than 5% between seasons. Ticheler (1961) recorded
up to 50% parasitisation by this, the most important parasitoid in the Ivory
Coast. In West Africa C. stephanoderis is commoner than P. nasuta
(Abraham et al. 1990). A major mass production and release program
commenced in Colombia in 1993, with a production of 10 million wasps per
month. When 400 000 wasps were released in a 2 million ha area of coffee
trees 85% parasitisation was attained when there was 80% infestation of
coffee berries and 20% parasitisation when there was 5% infestation. The
target for the releases was 12.5 wasps per berry and 300 berries containing
wasps for each 15 trees, giving 20 000 to 30 000 wasps per ha (P. Cochereau
pers. comm. 1995). Life tables were developed for C. stephanoderis in
Mexico (Infante and Luis 1993; Infante et al. 1994b).
Studies of mass releases of C. stephanoderis suggest that they can
control low density populations of H. hampei in commercial coffee
plantations, adult predation by the wasp probably being the most important
mortality factor. However, mass production costs are too high for releases to
be economically viable and cheap artificial diets for mass rearing are being
investigated, with successful rearing already achieved for four generations
(CABI:IIBC 1996).

Heterospilus coffeicola Hym.: Braconidae
Heterospilus coffeicola is a braconid wasp about 2.5 mm long. It does not
enter the borehole of the beetle, but travels from berry to berry inserting its
ovipositor into the boreholes in the course of seeking Hypothenemus larvae.
Only one small egg is laid in each berry, and the larva that emerges after
about six days feeds on beetle eggs and larvae over a period of 18 to 20 days,
consuming 10 to 15 eggs and larvae per day. In this regard it is more of a
predator than a parasite. According to De Toledo Piza and Pinto da Fonseca
(1935) the larva kills the adult H. hampei before pupating inside a white
silken cocoon. The wasp emerges after a comparatively brief pupal period
(Hargreaves 1926; De Toledo Piza and Pinto da Fonseca 1935, Le Pelley
1968). In Uganda it is attacked by a chalcidid of the genus Closterocerus
(Schmiedeknecht 1924).
Hargreaves (1926, 1935) stated that Heterospilus coffeicola contributed
substantially to the control of H. hampei in Uganda. The Brazilian
entomologists De Toledo Piza and Pinto da Fonseca (1935) studied the wasp
in Uganda with a view to assessing its potential value as a biological control
agent in Brazil. They concluded that H. coffeicola can thrive only in areas
with a continuous production of coffee berries throughout the year, and as
such conditions prevail nowhere in Brazil they recommended against its
importation. One possible disadvantage of this wasp is that its larvae feed on

178

Biological Control of Insect Pests: Southeast Asian Prospects

the larvae of other wasps as well as those of H. hampei, and it may even be
cannibalistic (Hargreaves 1924). If these statements are verified then there
may be reservations about the employment of H. coffeicola in biological
control. A further difficulty associated with this species as a biological
control agent is that a number of workers have been unable to breed it in the
laboratory, a problem also experienced by CIBC (1987) during its current
program, although Rangi et al. (1988) have reported limited success. The
free-living existence of the adults may involve special nutritional or mating
requirements that have not yet been met experimentally.

Phymastichus coffea Hym.: Eulophidae
This parasitoid was first recorded in Togo as recently as 1989 (BorbonMartinez 1989), causing up to 30% parasitisation, but is now known also
from Ivory Coast and Kenya. It is an endoparasite of the adult female
H. hampei, which is usually attacked as she is commencing to tunnel in to a
coffee berry. P. coffea also enters the berry to parasitise male H. hampei.
Oviposition occurs in both the thorax and the abdomen of the host, the
former producing a male and the latter a female. Although several eggs may
be laid in each host, only two wasps are produced. Males range in length
from 0.45 to 0.55 mm and females from 0.8 to 1.0 mm. Females do not
require to be fertilised before they commence oviposition shortly after
emergence. At 27¡C, larval development takes about 21 days, the pupal
stage about 8 days and adult longevity appears to be a few days only. In the
field 20 females were produced for each male and it was estimated that
between 4 and 7 hosts could be parasitised in a 4-hour period.
P. coffea was the most important parasitoid of H. hampei in the majority
of coffee holdings on the Togolese Plateau at about 800m above sea level
and is fairly common around Man (West Ivory Coast) near the Liberian
border (La Salle 1990; Feldhege 1992; P. Cochereau pers. comm. 1994;
Infante et al. 1994a, ).
Mass production methods have been developed in Colombia for
P. coffea and a decision to release is expected shortly (CABI:IIBC 1996).

Prorops nasuta Hym.: Bethylidae
Prorops nasuta is native to Uganda, Kenya, Tanzania and Cameroon, Ivory
Coast and Togo. It is a dark brown bethylid wasp about 2.3mm in length, the
name nasuta referring to the characteristic bilobed ÔnoseÕ protruding
forwards above the antennal bases. This wasp parasitises and preys upon
several species of Hypothenemus (Clausen 1978). Males that emerge first
from pupae always stay on the remaining cocoons within the coffee berry
and mate with the females as they emerge. Because P. nasuta populations
are, thus, highly inbred it is probable that there are different strains of

4.10

Hypothenemus hampei

179

P. nasuta in West Africa and East Africa, (Abraham et al. 1990; Griffiths
and Godfray 1988; Murphy and Rangi 1991) and testing these may be highly
relevant to biological control. On coffee the fertilised female enters an
infested berry via the borehole of the adult H. hampei, choosing berries on
the trees rather than those on the ground. If the parent borer beetle is still
present she may kill it and use the cadaver to plug the entrance hole, over
which she stands guard. According to CIBC (1987) the female wasp does not
feed upon borer beetles she may kill, but other authors state that she will do
so if no other life history stages are available, but that she cannot mature eggs
on a diet of adults alone. Several larvae and pupae may be injured with the
ovipositor before any oviposition occurs, and these victims succumb in a
few days. P. nasuta feeds by preference on the eggs and young larvae of
H. hampei and oviposit on the late third stage larvae and pupae. The hosts
chosen for oviposition are stung, sometimes several times, and thus
paralysed before one, or sometimes two, eggs are laid upon them. Eggs are
placed ventrally on larvae and on the abdominal dorsum of pupae. The eggs
(0.55 ´ 0.18mm) are large for a wasp of this size. They hatch in an average of
about three days and the larval stages last three to eight days. The
ectoparasitic larva may consume more than one host. There is a prepupal
(non-feeding) period of about three days, passed inside a silken cocoon spun
by the fully fed larva. It is common to find 20 cocoons in a coffee bean, and
up to 62 have been recorded. The pupal stage lasts on an average about 21
days, varying from 9 to 27 days according to temperature.
The life cycle from egg to adult lasts 17 to 33 days (average 29) at 25¡C
and may be as long as 66 days at 18¡C. There are considerable discrepancies
between figures given by various authors for the duration of the life history
stages, but there is general agreement that the female is quite long-lived Ñ
up to 135 days being cited in Brazil, given an abundant supply of larvae and
prepupae as food. By contrast it appears that the males do not feed and they
do not survive longer than 13 days. Females outnumber the males, a figure of
three to one being recorded. Statements as to duration of the preoviposition
period give rather diverse figures. Usually a few days are indicated but one
record is of 17 days. Parthenogenesis may occur, when only male progeny
are produced. Females may lay up to 66 eggs at a rate of one or two a day,
utilising several berries in the process.
In feeding, females consume several eggs and unparasitised larvae per
day and they will also eat pupae. Normally all stages of the beetle in a berry
are killed either by parasitisation, predation or merely by stabbing before the
female leaves (Leefmans 1924a; Begemann 1926; Hempel 1933; De Toledo
Piza and da Fonseca 1935; Hargreaves 1935; Hutson 1936; Puzzi 1939; De
Toledo 1942; Le Pelley 1968; Abraham et al. 1990; ). The low abundance of

180

Biological Control of Insect Pests: Southeast Asian Prospects

P. nasuta in Western Kenya suggests that it may not be suited to high
altitudes (Murphy and Rangi 1991). In one locality in S‹o Paulo (Brazil) the
percentage of infested berries that contained parasitoids rose to a maximum
of 2.4 in autumn (De Toledo 1942).

Scleroderma cadaverica Hym.: Bethylidae
Scleroderma cadaverica is listed by Herting and Simmonds (1973) as a
natural enemy of H. hampei, but only some of the specimens before Benoit
(1957) when he prepared the taxonomic description had been reared from
that species, others being stated to come from small beetles boring in cane
furniture. The North American species of Scleroderma are stated by
Krombein et al. (1979) to be parasitic on the larvae of small wood-boring
beetles, the female wasps frequently stinging people inhabiting infested
houses. The African specimens of S. cadaverica were submitted to European
specialists for identification and description because stinging by females
(which may be either winged or apterous) had caused severe dermatitis to
African and European people. No responsible person would consider using
this insect in biological control projects.

Comments
Hypothenemus hampei has established itself in most of the coffee growing
areas of the world, but there are still uninfested countries, such as Australia,
Hawaii, Papua New Guinea, Vanuatu and the Solomon Islands. Quarantine
is of critical importance to these countries and it is important to ensure that
coffee imported into clean areas has been completely disinfested. Thorough
drying of the seed coffee is an indispensable supplement to disinfestation
techniques.
Although great advances have been made in recent years in the chemical
control of H. hampei, it would be a great advantage to have the support of
additional measures. Rhodes and Mansingh (1981) found chemical control
inadequate on its own in Jamaica and advocated its integration with cultural
practices and Bardner (1978) emphasised the need to harmonise cultural,
biological and chemical control of coffee pests. Hernandez Paz and Penagos
Dardon (1974) found, in Guatemala, that low-volume sprays of endosulfan
could completely destroy H. hampei in berries on the bushes and, according
to Mansingh and Rhodes (1983), this chemical is in extensive use in Central
and South America. However, a very high level of resistance to endosulfan
in H. hampei is reported in New Caledonia (Brun et al. 1989, 1990), raising
concern that this valuable insecticide may not remain an effective material
for long.

4.10

Hypothenemus hampei

181

Plantation sanitation is an old-established tradition in pest control, and
the coffee berry borer has long been attacked from this angle. The life cycle
of the borer, indeed, lends itself to this approach, as it is narrowly specific to
the coffee berries. In Java, Roepke (1912) and Leefmans (1924b)
recommended the total destruction of infested or susceptible berries over a
period long enough to break the life cycle of the coffee berry borer. A period
of three months was aimed at, although some records of the longevity of
beetles exceed this. Measures taken involve the collection of all fallen
berries and the picking of any that may have escaped the harvest, plus the
continuous removal of all young berries on which adult female beetles might
feed. Friederichs (1922) and Rutgers (1922) reported successful application
of the method in Java. The latter reported that, on estates which had applied
the measures, the percentage of infested berries fell from 40% to 90% to
between 0.5% and 3.0%. In New Caledonia application of the method
reduced infestation from 80% to 10% (Cohic 1958). In Malaysia, Corbett
(1933) recommended picking at weekly intervals (or the shortest period
practicable, according to size of holding) of all bored green, ripe and
blackened berries on the bush and from the ground. A host-free period of six
months was recommended for the eradication of the beetle from isolated
plantations. In Mexico, Baker (1984) concluded that berries are not infested
while lying on the ground surface. Nevertheless any infested berries allowed
to lie where they fell ultimately generated large numbers of beetles.
Turning to biological control, it is generally possible to gain some idea of
the likely effectiveness of natural enemies in a new country from their
impact in their country of origin. In a new country the enemies may be more
effective if freed from hyperparasites before transfer or less effective if they
are poorly adapted to their new environment. Based on their evaluation of
the population dynamics of H. hampei and its parasitoids, Moore and Prior
(1988) and Murphy and Moore (1990) were optimistic about the value of
biological control as a key component of successful integrated management
of H. hampei. Although this indeed seems probable, the reports from Africa
are far from uniform and the coffee berry borer is a problem in some areas.
This may be due to whether arabica or robusta coffee is involved and to the
widely different conditions under which coffee is grown and harvested
since, for example, parasitoids may be less effective when coffee is shaded
(Hargreaves 1935).
Hargreaves (1926, 1935) considered that both Prorops nasuta and
Heterospilus coffeicola were important in regulating populations of
H. hampei in commercial coffee at about 1200m in Uganda and Pascalet
(1939) arrived at a similar view concerning these parasitoids in Cameroon.
On the other hand, Abasa (1975) in Kenya, De Toledo Piza and Fonseca

182

Biological Control of Insect Pests: Southeast Asian Prospects

(1935) and Ingram (quoted by Le Pelley 1968, p 125) in Uganda and Sladden
(1934) and Schmitz and Crisinel (1957) in Zaire concluded that parasitoids
had little influence on the number of bored berries. Murphy and Moore
(1990) considered that P. nasuta did not have a major impact in Western
Kenya where H. coffeicola was not encountered. There, coffee berries
infested with H. hampei, ranged in being attacked by P. nasuta from 0% in
the wet season to 25% in the dry season and P. nasuta populations did not
build up until after the annual coffee harvest when populations of H. hampei
had already crashed from their annual peak.
Although P. nasuta is present in Ivory Coast (Diro, Man) it is usually
rare and H. coffeicola apparently absent. However, Cephalonomia
stephanoderis was common and up to 50% of colonies of H. hampei in black
berries were parasitised, resulting in important population reduction
(Ticheler 1961), a conclusion contested by Koch (1973) on unsubstantiated
grounds. It is relevant that, in the presence of C. stephanoderis, but without
any chemical treatment, Cochereau and Potiaroa (1994) reported that only
2% of the coffee beans (4% of the berries) were attacked in Ivory Coast by
H. hampei. They contrast this with the situation in New Caledonia where it
was common to find 50% of the berries bored, even in plantations treated
with endosulfan.
Experience in biological control suggests that the negative assessments
of the value of parasites in Africa may reflect the restraining influence of
hyperparasites (such as Aphanogmus (= Ceraphron) dictynna), predators,
competitors and diseases, but it seems that no such impediments were taken
to Brazil with the original stocks of Prorops nasuta. Nevertheless, Le Pelley
(1968) stated that there was no evidence that, 35 years after the introduction,
Brazilian coffee growers had to invest less effort in other control measures
and Yokayama et al. (1978), 45 years after its introduction, gave a
depressing picture of its impact. Greater success may attend the more recent
employment of Cephalonomia stephanoderis.
In spite of the conflicting reports, there are, on balance, good reasons for
maintaining optimism that natural enemies can play an important role in
reducing the losses caused by H. hampei. There are the still to be evaluated
prospects that C. stephanoderis will prove useful and there are various
strains (and intraspecific crosses) of P. nasuta, in addition to Phymasticus
coffea, Heterospilus coffeicola and Goniozus to consider. It is quite possible
also that further work, especially in countries such as Ethiopia, which have
not been studied, will reveal additional parasitoid species. It is possible that
nematodes may prove effective in controlling infestations in fallen berries
and likely that applications of a virulent strain of Beauveria bassiana may
prove to be a valuable alternative to pesticides. It is fortunate for Southeast

4.10

Hypothenemus hampei

183

Asian countries that active work on both parasitoids and B. bassiana is in
progress in a number of South American countries and in New Caledonia,
from which valuable new information will emerge. However, this is not a
justification to delay action if H. hampei is high enough on the priority list,
since it is likely that parasitoid cultures and relevant expertise will be more
readily and economically available now than they will be some years hence.

185

4.11

Leucinodes orbonalis

China

++

India

Taiwan

++

Myanmar
20°

++

Laos

20°

+

P
Philippines

Thailand

+

Cambodia

++

Vietnam

+++

++

+++

Brunei

Malaysia


+



Singapore

Papua
New Guinea

P
Indonesia

20°

Australia

20°

It appears that Leucinodes orbonalis has been introduced from India to Southeast Asia.
In India and most other countries, egg plant (brinjal) is protected against insect pests with
heavy applications of broad spectrum pesticides, which must also suppress parasitoids
and predators. Several parasitoids, and especially the ichneumonid Trathala flavoorbitalis,
are capable of producing in excess of 50% combined mortality. If levels of this magnitude
are combined with the widespread adoption of partially resistant egg plant cultivars, there
are good reasons for believing that substantial pest control would be achieved.

186

Biological Control of Insect Pests: Southeast Asian Prospects

Leucinodes orbonalis GuenŽe
Lepidoptera: Pyralidae
brinjal fruit borer, eggplant fruit and shoot borer

Rating
Southeast Asia
18

+++
++
+
P

Viet, Brun, Phil
Myan, Camb, Msia
Thai, Laos, Sing
Indo

China

Southern and Western Pacific

++

absent

Origin
According to Purseglove (1968), eggplant (Solanum melongena) is native to
India and there are certainly many varieties in cultivation there. It is
probably safe to conclude that L. orbonalis is also native to India, although it
is not confined to eggplant and also occurs widely in Africa (see below).
Leucinodes orbonalis is closely related to Central American Neoleucinodes
species such as N. elegantalis, which is a widespread pest there of eggplant,
and other Solanaceae. This suggests that parasitoids of Neoleucinodes may
be of interest for Leucinodes and vice versa.

Distribution
L. orbonalis occurs in the Indian subcontinent (Andaman Is, India,
Pakistan, Nepal, Bangladesh, Sri Lanka), Southern Asia all 10 Southeast
Asian nations, also Hong Kong, China, Taiwan, Japan, Africa (Burundi,
Cameroon, Congo, Ethiopia, Ghana, Kenya, Lesotho, Malawi,
Mozambique, Nigeria, Rwanda, Sierra Leone, Somalia, South Africa,
Tanzania, Uganda, Zimbabwe) (CIE 1976; Tamaki and Miyara 1982;
Whittle and Ferguson 1987; Veenakumari et al. 1995) and is also reported
from Congo (Dhankar 1988) and Saudi Arabia (FAO 1982). It is not
recorded from Australasia, Oceania, the Americas or Europe and was
apparently absent until recently from the Philippines (CIE 1976), although
Navasero (1983) has now reported it there. Between 1977 and 1987 there
were 1291 interceptions of L. orbonalis at U.S. ports of entry, most on eggplant fruit in passenger baggage (Whittle and Ferguson 1987), and there
must be significant risks also of its entry to Australia and the Pacific.

4.11

Leucinodes orbonalis

187

Biology
The flat, oval eggs are mostly laid at night, either singly or in groups of 2 to 4
(and up to 200 per female), on the lower surface of young shoots, flower
buds and calyces of developing fruits. They hatch in 4 days at an optimum
temperature of 30¡C and relative humidity of 70% to 90%. Larval
development occupies 14 days and pupal development 19 days. With a
preoviposition period of 2 days, this results in a generation time of about one
month. Details from three authors are shown in Table 4.11.1. Up to 9 larvae
have been found in a single fruit and, when mature, pupate within a tough
silken cocoon on the fruit, stem or among ground litter (Tamaki and Miyara
1982; Khoo et al. 1991; Yin 1993). In the absence of fruit, larvae feed on the
growing points of the plant. In the plains of India it occurs throughout the
year but, at higher altitudes, cold weather interrupts its development and it
overwinters as a larva in a silken cocoon, usually 1 to 3 cm below the soil
surface. It is capable of surviving temperatures as low as Ð6.5¡C (Lal 1975).
It thrives best under warm, moist monsoonal conditions. L. orbonalis can be
reared in the laboratory on dried eggplant fruit or on a semi-synthetic diet
(Islam et al. 1978, Patil 1990). Virgin females produce a pheromone that
attracts males (Gunawardena 1992; Yasuda and Kawasaki 1994).

Host plants
In addition to eggplant, which is its main host, L. orbonalis is reported to
feed on several other Solanum species, e.g. S. tuberosum (potato: shoots
only) (Fletcher 1916; Mehto et al. 1980; Isahaque and Chaudhuri 1983),
S. nigrum (black berry nightshade) (Nair 1967; Das and Patnaik 1970;
Isahaque and Chaudhuri 1983 ), S. indicum, S. myriacanthum (shoots only)
(Menon 1962; Isahaque and Chaudhuri 1983) and S. xanthocarpum (Menon
1962). It has also been reported from tomato (Lycopersicon esculentum)
(Hargreaves 1937; Das and Patnaik 1970), potato (Solanum tuberosum) and
several unexpected plants, including cape gooseberry (Pillai 1922), green
pea pods (Hussain 1925), mango shoots (Hutson 1930), cucumber, sweet
potato and capsicum (Whittle and Ferguson 1987). Screening egg plant
varieties for resistance to L. orbonalis has revealed several that are relatively
resistant. Thick-skinned varieties appear to be more resistant (Patil and Ajri
1993; Patel et al. 1995).

188

Table 4.11.1

Development times, and other life history data (rounded) of Leucinodes orbonalis

Reference

Atwal and Verma 1972

Baang and Corey 1991

Mehto et al. 1983

20¡C

25¡C

30¡C

35¡C

egg development(days)
egg survival (%)

9
63

6
69

4
78

3
55

5

6

larval development(days)
larval survival (%)

29
53

20
72

14
69

12
48

18

15

pupal development(days)
pupal survival (%)

17
57

13
65

9
71

7
55

10

12

longevity females(days)
males(days)

11
9

7
7

6
4

3
2

3
2

8
4

188

225

248

86

85Ð254

122

eggs/female

Biological Control of Insect Pests: Southeast Asian Prospects

Temperature

4.11

Leucinodes orbonalis

189

Damage
All stages of eggplant are attacked by L. orbonalis, which is regarded as one
of its major insect pests. Larvae bore into the tender shoots of both seedlings
and after transplantation older plants, causing wilting and death of the
growing tips. Later, they bore into flower buds and fruits. The damaged buds
are shed and the fruits carry circular holes, sometimes plugged with frass.
Such fruits are unmarketable. The yield loss varies with location and season
and is greatest when temperature and humidity is high. Losses range from 20
to 60% (Krishnaiah 1980; Dhankar 1988, Roy and Pande 1994) or even
higher (Akhtar and Khawaja 1973; Lal 1991). It is reported that Vitamin C in
bored fruit can be reduced by 60% (Hami 1955).
There is an extensive literature dealing with the screening, mainly in
India, for resistance of eggplant cultivars to L. orbonalis. Some cultivars are
far less damaged than others, although no information is available on the
genes involved. The less susceptible cultivars generally have one or more
morphological characteristics, including compact vascular bundles in a thick
layer, lignified cells and less area of pith in the shoots, tougher fruit skin and
a tight calyx to hinder larval entry. Biochemical factors involved include a
low protein and sugar content in resistant genotypes and a higher silica and
crude fibre content in the shoots, which adversely affects growth rate, pupal
period, survival, sex ratio and fecundity. The wild relatives of Solanum
melongena that are not attacked by L. orbonalis often have a high alkaloid
content, which may be responsible, but this attribute would not be desirable
in an edible product (Dhankar 1988).

Natural enemies
Table 4.11.2 lists the natural enemies of L. orbonalis. It is striking that most
are from India and Sri Lanka, that the records from Malaysia and the
Philippines are the only ones from Southeast Asia and that the species there
have not been reported elsewhere. Although it is possible that some of the
Indian and Sri Lankan species have a restricted distribution, the lack of
records from elsewhere probably means that the necessary investigations
have not been carried out.

Natural enemies of Leucinodes orbonalis

Species
NEUROPTERA
CHRYSOPIDAE
Chrysopa kulingensis

Stage attacked

egg
larva

190

Table 4.11.2

% parasitisation

Reference

12.5
2-4

China

Yang 1982

(15)

Philippines

Navasero 1983

Malaysia

Thompson 1946

Malaysia
India
India
China

Corbett 1929; Yunus & Ho 1980
Patel et al. 1971
Thompson 1946
Yang 1982

Philippines
India
India
India
Philippines
Sri Lanka
India
Sri Lanka
India

Navasero 1983
Venkatraman et al. 1948
Tewari & Sardana 1987a
Tewari & Moorthy 1984
Navasero 1983
Sandanayake & Edirisinghe 1992
Patel et al. 1971
Sandanayake & Edirisinghe 1992
Patel et al. 1971;
Tewari & Moorthy 1984

DERMAPTERA
UNIDENTIFIED

DIPTERA
SARCOPHAGIDAE
Amobia sp.
TACHINIDAE
Pachyophthalmus sp.
Pseudoperichaeta sp.
Sturmia parachrysops
UNIDENTIFIED

5.7
pupa

5Ð8

HYMENOPTERA
BRACONIDAE
Apanteles sp.
Bracon greeni
Bracon sp.
Campyloneura sp.
Chelonus sp.

larva; ecto
larva; ecto
larva

Phanerotoma sp.
Phanerotoma sp. nr.
hindecasisella

larva

3.1-11.1
lab only
9.2Ð28.1
1Ð2
15.5
4.6
7.4
1Ð2

Biological Control of Insect Pests: Southeast Asian Prospects

Country

Table 4.11.2 (contÕd) Natural enemies of Leucinodes orbonalis
Species
HYMENOPTERA

pupa

larva
pupa
larva; ecto
larva

% parasitisation

16

0.5Ð2
9Ð15

Trathala striata
Xanthopimpla punctata

Reference

Philippines
Philippines

Navasero 1983
Navasero 1983

China

Yang 1982

Malaysia
India
India
India
Sri Lanka
India
India
India
Malaysia
Malaysia
Philippines

Yunus & Ho 1980
Tewari & Sardana 1987b
Verma & Lal 1985
Ayyar 1927
Sandanayake & Edirisinghe 1992
Mallik et al. 1989
Naresh et al. 1986a, b,
Patel et al. 1967
Yunus & Ho 1980
C.L. Tan pers. comm. 1994
Navasero 1983

BACTERIUM

larva

2Ð3

China

Yang 1982

BACULOVIRUS

larva

1.1Ð6.4

India

Tewari & Singh 1987

Leucinodes orbonalis

36.2
3.6Ð9.1
12.9Ð18.2

Country

4.11

CHALCIDIDAE
Brachymeria lasus
Brachymeria sp.
EULOPHIDAE
Dermatopelte
(= Dermatopolle) sp.
ICHNEUMONIDAE
Cremastus hapaliae
Eriborus argenteopilosus
Itamoplex sp.
Pristomerus testaceus
Trathala flavoorbitalis

Stage attacked

191

192

Biological Control of Insect Pests: Southeast Asian Prospects

CHINA
The life history of L. orbonalis was studied by Yin (1993), in Hunan where
up to 6 generations were completed annually and overwintering occurred in
the pupal stage. Yang (1982) recorded two pupal parasitoids, the
polyembryonic wasp Dermatopelte sp., causing 16% parasitisation (and
producing 12 to 21 individuals per host pupa) and an unidentified dipteran
causing 5% to 8% mortality. A predator, Chrysopa kulingensis consumed
12.5% of eggs and 2% to 4% of larvae. A disease, presumably of bacterial
origin, killed 2% to 3% of larvae.
INDIA, SRI LANKA
The ichneumonid Trathala flavoorbitalis appears to be the most effective
parasitoid so far recorded, with an average parasitisation rate in Sri Lanka of
36.2% (Sandanayake and Edirisinghe 1992). In Hanyana, India, Naresh et al.
(1986a) recorded rates from 12.9% to 18.2% and in Bihar, Mallik et al.
(1989) 3.6% to 9.1%. These were higher than the combined rates of 1% to
2% by Phanerotoma sp. and Campyloneura sp.. T. flavoorbitalis is a very
widespread species and attacks the larvae of many species of Lepidoptera.
Bracon sp. from near Bangalore, India, with a parasitisation rate ranging up
to 28.1% (Tewari and Sardana 1987a), Chelonus sp. ranging up to 5.5%
(Sandanayake and Edirisinghe 1992) and Itamoplex sp. up to 15% (Verma
and Lal 1985) are all capable of producing significant mortality.
PHILIPPINES
A dermapteran larval predator and 5 parasitoids (the braconids Apanteles sp.
(on larvae) and Chelonus sp. (on pupae), the chalcidids Brachymeria lasus
(= B. obscurata) and Brachymeria sp. (larvae and pupae), and the
ichneumonid Xanthopimpla punctata) were found attacking L. orbonalis in
the field. Apanteles sp. and the dermapteran were the most abundant
(Navasero 1983). It appears that L. orbonalis has only been recognised in the
Philippines since the early 1970s.

Attempts at biological control
There have been none.

Major natural enemies
Bracon sp. Hym.: Braconidae
This larval ectoparasitoid was found near Bangalore, India attached to the
thorax of the host larva. It pupated in a silk cocoon inside the tunnel made by
its host and caused parasitisation ranging from 9.2% to 28.1%. It was
regarded as a promising parasitoid (Tewari and Sardana 1987a).

4.11

Leucinodes orbonalis

193

Itamoplex sp. Hym.: Ichneumonidae
Adult Itamoplex sp., 8 to 10 mm in length, were reported from Kulu Valley,
Himachal Pradesh, India where the winter temperature drops as low as Ð8¡C.
L. orbonalis overwinters in the larval (?prepupal) stage in an earthen cocoon
attached to the host plant, usually 1 to 3 cm below the soil surface. The
parasitoid emerged from 9% to 15% of these cocoons. Itamoplex (= Cryptus)
sp. is recorded attacking a range of host Lepidoptera in cocoons (Verma and
Lal 1985).

Trathala (= Cremastus) flavoorbitalis Hym.: Ichneumonidae
This is a widespread, non-specific parasitoid of lepidopterous larvae. It
occurs naturally in India, Japan, Myanmar, Sri Lanka, the Philippines and
Singapore and has been established in Canada, Hawaii and continental USA
for biological control of several important lepidopterous pests. It is recorded
from at least 5 families of Lepidoptera, involving over 40 different hosts,
most of them pest species (Bradley and Burgess 1934). It is not known
whether there are strains that prefer to attack particular hosts.
T. flavoorbitalis is recorded from L. orbonalis in India and also in Sri
Lanka where L. orbonalis is its major host and where an average
parasitisation level of 36.2% is reported (Sandanayake and Edirisinghe
1992, 1993). In Hissar, India, Trathala was the only parasitoid of
L. orbonalis, with levels of attack on larvae ranging from 13.2% to 18.2% in
winter to 12.9% in summer at a time when 95.2% of fruit was infested
(Naresh et al. 1986a, b).
T. flavoorbitalis females commence ovipositing 4 days after emergence,
with a preference for 3rd, 4th and 5th instar host larvae. In the laboratory,
only a fraction of 1st instar larvae are stung and all soon die from the
encounter, a fate shared by about half the 2nd instar larvae that are stung. In
later instars 68Ð91% were stung, but without early mortality. Not all of these
received eggs, although some received up to 5, with only one parasitoid larva
developing beyond the first instar. Parasitoid development time from egg to
adult was about 23 days at 28¡C. Successful development occurred in 53%
of the 3rd, 57% of the 4th and 41% of 5th instar host larvae, adult wasps
emerging after pupation of the host. In the field, the parasitoid attacks the
host larva by inserting its ovipositor into the hole bored into the fruit and
through which the larva pushes out frass (Bradley and Burgess 1934; Naresh
et al. 1986a; Sandanayake and Edirisinghe 1992, 1993).

194

Biological Control of Insect Pests: Southeast Asian Prospects

Comments
It is not clear how many of the natural enemies are sufficiently host specific
to be confidently transferred as biological control agents although, where
alternative hosts are known, these are also pests. Thus, Eriborus
argenteopilosus has a wide host range, including Condica (= Prospalta)
capensis, which attacks safflower and sunflower, Helicoverpa armigera,
and Spodoptera exigua (Tewari and Sardana 1987a,b). The ichneumonid
Pristomerus testaceus has been bred from the brinjal stem-borer Euzophera
ferticella (Ayyar 1927). It is not known whether the ichneumonid
Phanerotoma sp. nr hindecasisella is a distinct species. True
P. hindecasisella has been reported from several lepidopterous families in
India or Sri Lanka: Gelechiidae (Dichomeris eridantis), Noctuidae (Earias
insulana), Pyralidae (Eutectona (= Pyrausta) macheralis, Hendecasis
duplifascialis, Maruca vitrata (= M. testulalis), Nephopterix rhodobasalis,
Syllepte derogata) and Tortricidae (Leguminivora (= Cydia) ptychora)
(Thompson 1953; Fellowes and Amarasena 1977; Kumar et al. 1980;
Tewari and Moorthy 1984).
Bracon greeni is best known as a primary ectoparasitoid of the
lepidopterous lac predator Eublemma amabilis (Noctuidae) and has not been
reported to parasitise any other host in nature. However, under laboratory
conditions, it was successfully reared on L. orbonalis (Venkatraman et al.
1948).
Although entomopathogenic nematodes have not been recorded
attacking L. orbonalis in the field, Steinernema (=Neoaplectana)
carpocapsae (DD136 strain) produced 73.3% mortality of larvae in the
laboratory in 72 hours (Singh and Bardhan 1974).
The weight of evidence suggests that L. orbonalis originated in India and
spread into Southeast Asia. It is most surprising that it has only
comparatively recently become a pest Ñ and a serious one Ñ in the
Philippines which, in 1990, had 16 000ha under egg plant and produced
113 000 tonnes, second only to Indonesia in production in Southeast Asia
(FAO 1991). In view of the steady spread around the world of so many other
pests it is also surprising that Australia, the Pacific, the Americas and Europe
are still free from L. orbonalis.
It might well be assumed that not all of its natural enemies in India have
accompanied it during its spread. However, reports of high damage levels to
susceptible egg plant cultivars in India do not provide much confidence that
the natural enemies there are particularly effective, unless their efficacy is,
perhaps, reduced by insecticide applications or so-far-unreported
hyperparasitoids.

4.11

Leucinodes orbonalis

195

Nevertheless, parasitisation in Sri Lanka is quite impressive, with
Trathala flavoorbitalis averaging 36.2%, Chelonus sp. 15.5% and
Phanerotoma sp. 7.4%. The combined average rate of 59.1% would
certainly be capable of causing an important lowering of moth populations,
particularly if associated with the high levels of host plant resistance that are
available. It is probable that the widespread high rates of application of
broad spectrum insecticides currently used are preventing natural enemies
from exerting much effect. An investigation of what natural enemies of
L. orbonalis are already present in Southeast Asia is required to enable a
decision on the attractiveness of this pest as a biological control target. It is
probably safe to conclude that T. flavoorbitalis, the most effective parasitoid
so far reported, is present in most, if not all, of Southeast Asia, but it would
be relevant, in relation to possible host-preferring strains, to determine
whether it attacks L. orbonalis throughout the region.
It is interesting that the closely related South American Neoleucinodes
elegantalis has a quite different suite of parasitoids. Of 2500 larvae collected
in the field 1.6% were parasitised by the encyrtid Copidosoma sp. and 0.08%
by the tachinid Lixophaga sp. Of 527 pupae, 0.38% were parasitised by the
ichneumon Calliephialtes sp. The fungus Beauveria sp. caused 55%
mortality. Trichogramma sp. parasitised 89% of eggs laid on egg plant and
tomato (Plaza et al. 1992). Of these species, Beauveria and the
Trichogramma sp. might be relevant to the Southeast Asian scene.

197

4.12

Nezara viridula

China

++

India

Taiwan

++

Myanmar
20°

++

Laos

20°

+

P
Philippines

Thailand

+

Cambodia

+

Vietnam

++

+

P
Brunei

Malaysia

+





Singapore

+

Papua
New Guinea

Indonesia

++

20°

Australia

20°

Nezara viridula is probably native to the Ethiopian region, but is now dispersed widely
throughout the warmer regions of the world.
There have been a number of major successes with biological control of the green
vegetable bug, particularly with an egg parasitoid, Trissolcus basalis. Control has been
supplemented in Hawaii by two parasitoids of adults, Trichopoda pilipes and T. pennipes,
which, however, have failed to establish in most other places.
The main areas where biological control using T. basalis has been unsuccessful are
often associated with extensive plantings of soybean. It has been suggested that the
surface hairyness of most soybean cultivars reduces the effectiveness of this parasitoid. If
this proves to be correct the way is open for the selection of cultivars with this attribute
modified.
Over 80 parasitoids of N. viridula are known, amongst which there are several
potentially valuable, untried species that are clearly worthy of investigation.
N. viridula is an attractive target for biological control, especially where it is a problem in
an area not closely associated with extensive soybean plantings.

198

Biological Control of Insect Pests: Southeast Asian Prospects

Nezara viridula (Linnaeus)
Hemiptera, Pentatomidae
green vegetable bug, southern green stink bug (USA)

Rating
Southeast Asia
10

++

Myan, Viet

+

Thai, Laos, Camb,
Msia,
Sing, Indo
Brun, Phil

P

China
++

Southern and Western Pacific
14

++
+

P

Cook Is, Fr P, Niue,
PNG, Sam
Fiji, Kiri, N Cal,
A Sam
FSM, Guam, Sol Is,
Tong, Van

This account updates the chapter on Nezara viridula in Waterhouse and
Norris (1987), and the valuable account of Jones (1988), in relation to
prospects for biological control.

Origin
The locality of the holotype Ôin IndiisÕ (Linnaeus 1758) has been interpreted
as India or the East Indies. However it may well have been brought there by
European travel since an analysis of genetic colour variants and the relative
abundance of fairly specific insect parasitoids led Hokkanen (1986) and
Jones (1988) to the conclusion that the original home of N. viridula was in
the Ethiopian (Afrotropical) or Mediterranean region, rather than in
Southeast Asia (Yukawa and Kiritani 1965). Furthermore, Africa is
considered to be the centre of the genus Nezara (Freeman 1940).

Distribution
Azores, Canary Is, Bermuda, the Mediterranean littorale, most of Africa and
the Middle East, Madagascar, Mauritius, Reunion, Rodriguez, Seychelles,
Asia (exclusive of desert areas and those with very cold winters) Korea and
southern Japan, Southeast Asia, Papua New Guinea (including Bismarck
Archipelago), most of the oceanic Pacific nations (Butcher 1981), Australia,
New Zealand, Hawaii, southern USA, Mexico and other Central American
countries, West Indies generally, and much of South America (Anon. 1970).
It is not known to occur in Tokelau, Tuvalu or the Marquesas (Waterhouse
1985, 1997).

4.12

Nezara viridula

199

The entirely green colour form smaragdula of N. viridula is the one that
occurs widely in the Pacific area. In other areas of the world it is
accompanied by several other colour forms (Yukawa and Kiritani 1965).

Biology
The barrel-shaped eggs are usually laid at night in neat rafts, commonly of
80 to 120 or more eggs and they are cemented firmly to one another and to
the sheltered surface of a leaf. The eggs hatch in 4 to 9 days, and the newly
emerged nymphs remain together near the eggshells for a day or two, a
degree of gregariousness persisting also in the next instar or two. There are
five nymphal stages before the adult emerges, 24 to 60 days after hatching,
depending on temperature. At 25Ð28¡C, 55Ð65% RH and 14 hours daylight
the development periods (in days) were: egg, 4.8; 1st instar nymph, 3.8; 2nd
instar, 5.2; 3rd instar, 4.5; 4th instar, 6.4; 5th instar, 11.9 (Harris and Todd
1980). The nymphal stages are multicoloured, but the adults are a uniform
green in the form smaragdula. The adults can fly strongly. There may be
four generations in a year in coastal New South Wales, and perhaps more in
areas with no perceptible winter.
The adult bugs live up to 3 weeks in hot weather. In regions with a cold
winter those of the autumn generation may live much longer, hibernating in
debris, under bark, or in buildings, inactive and non-reproductive. Such
hibernating bugs change colour from green to brown. In areas with a less
severe winter the still-green adults may remain active, although nonreproductive. Waite (1980) showed that the adults and nymphs tend to bask
exposed on the surface of the plant canopy in the early daylight
hoursÑbehaviour that can be availed of in applying chemical control
measures (Kamal 1937; Clausen 1978; Hely et al. 1982; Singh and Rawat
1982; Todd 1989).

Damage
When not controlled by chemicals or natural enemies, this bug can be a
serious pest of a very wide range of crops and ornamental plants. In Australia
there are recommendations for its chemical control on beans, cucurbits,
peas, potatoes, tomatoes, passionfruit, groundnuts, sorghum, soybeans,
sunflowers and tobacco (Anon. 1967, 1979b; Miller et al. 1977), but it also
attacks maize, crucifers, spinach, lucerne and many other legumes, grapes,
oranges and many other fruits and seeds, and macadamia (Ironside 1979; La
Croix 1986) and pecan nuts (Seymour and Sands 1992). Undoubtedly there
would be recommendations for a much wider range of cultivated plants were
it not for the fact that biological control is effective now in many situations

200

Biological Control of Insect Pests: Southeast Asian Prospects

(Anon. 1967; Hely et al. 1982). In other countries it can be a pest of rice,
sesame and other grains, lablab, guavas, cowpeas, capsicums, cotton and
many other plants. It also infests and breeds on many weeds, which afford it
harborage.
The attack of the bugs is concentrated chiefly on fruits and fruiting
bodies, which, through the removal of sap and the injection of saliva, show
discoloration, malformation, stunting and shrivelling. Heavily attacked
tomatoes, for instance, are repulsive and inedible and even lightly attacked
ones are unmarketable. Passlow and Waite (1971), Goodyer (1972) and
Romano and Kerr (1977) attribute serious losses in Australian soybean crops
to the attack of this pest. Miller et al. (1977) measured the yield reduction on
soybeans and showed that an important effect of the bugs feeding was a
reduction in the germinability of seed. On soybean in Brazil, Corso et al.
(1975) showed that green vegetable bug attack affected pod development,
increased pod fall, and reduced the number of seeds per pod. Link et al.
(1973) demonstrated reductions in germination percentage and oil content
and an increase in relative protein content in heavily damaged seeds. A list of
references dealing with N. viridula and its association with soybeans has
been prepared by DeWitt and Godfrey (1972).
Some cultivars of soybeans are less damaged by N. viridula than others
and a strain of soybean that appears to have a high level of resistance has
been selected (Gilman et al. 1982). Mild antibiosis and non-preference were
factors contributing to resistance (Kester et al. 1984). The adverse effects of
the genotype (PI 171444) on the biology of a parasite Telenomus chloropus
attacking the eggs of N. viridula feeding on it have been studied by Orr et al.
(1985b).
The green vegetable bug has been shown to carry spores of fungal
diseases from plant to plant (Corso et al. 1975) and to transmit plant
pathogens during feeding (Kaiser and Vakili 1978).

Natural enemies
Introduced parasitoids have brought about successful biological control of
this pest in a number of countries and there is an extensive literature on the
subject. Nine species of parasite attacking Nezara viridula were listed by
Thompson (1944), 27 by Hokkanen (1986) and 57 by Jones (1988). At least
eighty are now included in Table 4.12.1 which is a modification and
extension of that in Jones (1988).
The species belong to two families of Diptera and six families of
Hymenoptera. It is notable from the entries that relatively little is known of
the parasitoids of N. viridula in the Ethiopian or Mediterranean regions,

4.12

Nezara viridula

201

which constitute the presumed area of origin of the green vegetable bug. Egg
parasitoids are the most numerous and all are Hymenoptera, whereas
nymphal and adult parasitoids are, with one exception, all Diptera. Two
hyperparasitoids of the major egg parasitoid Trissolcus basalis are known
from Australia, (both are species of Acroclissoides: Clarke and Seymour
1992) and one hyperparasitoid of the fly Trichopoda pennipes from Hawaii
(Exoristobia philippinensis: Davis and Krauss 1965). Predators are not dealt
with as all are known to be, or suspected as being, widely polyphagous and
hence unlikely to be approved for introduction to new areas. Nevertheless,
they play a significant role in maintaining N. viridula populations at low
levels. For example, in one study in soybeans in Louisiana, Stam et al.
(1987) found 18 insect and 6 spider species to be predators and that they
were responsible for 33.6% of the total mortality of N. viridula that occurred
from egg to adult.
The Scelionidae is the most important of the six families of
hymenopterous egg parasitoids. In it Trissolcus basalis is not only the most
important species, but also the most widespread. It attacks the eggs of a
number of other pentatomids, but appears to have a preference for
N. viridula: it is the dominant parasitoid of N. viridula eggs wherever it
occurs. Many other species are listed, in particular in the genera Trissolcus,
Telenomus, Ooencyrtus and Gryon, but a number appear to have no close
relationship with N. viridula and are unlikely to be of value as potential
biological control agents. Some drought-resistant species from the
Mediterranean may prove useful. The better known of the more promising
species are discussed later.
The tachinid parasitoids of adult N. viridula also oviposit on the cuticle
of 4th and 5th instar nymphs. Often these eggs are shed before hatching
along with the cuticle at moulting but, if hatching and penetration of the bug
occurs, the parasitoid larva matures in the adult. More of the species of
tachinids are native to South America than elsewhere. They were clearly
dependent upon other pentatomids before the arrival of N. viridula, but
several now appear to have a preference for it. The most promising of the
three tachinid parasitoids occuring in the Ethiopian region is the widespread
Bogosia antinorii, which is known only from N. viridula (van Emden 1945;
Barraclough 1985).
A picorna-like and a toti-like virus are known from N. viridula
(Williamson and Wechmar 1992, 1995).

Parasitoids of the green vegetable bug, Nezara viridula (modified after Jones 1988)

Parasitoid
DIPTERA

202

Table 4.12.1

Known host relations

SARCOPHAGIDAE
Sarcodexia innota

Southern USA

Sarcodexia sternodontis
TACHINIDAE
Bogosia antinorii

Two records ex N. viridula; wide host range as primary Drake 1920; Temerak &
parasitoid and scavenger
Whitcomb 1984
Hokkanen 1986

Widespread in Africa

Recorded only ex N. viridula

Cylindromyia rufifemur
Ectophasia crassipennis
Ectophasiopsis arcuata
Euclytia flava
Gymnosoma clavata
Gymnosoma kuramanum
Gymnosoma rotundata

Australia
Italy
Chile
USA
Palaearctic, Israel
Japan
Palaearctic

One record ex N. viridula
Bred ex N. viridula
Well adapted to N. viridula
Generalist parasitoid
One record ex N. viridula

Trichopoda giacomellii
(=Trichopoda nigrifrontalis,
= T. gustavoi
= Eutrichopodopsis nitens)
Trichopoda lanipes
Trichopoda pennipes

Argentina, Brazil,
Colombia, Paraguay

Well adapted to N. viridula

Wide host range; attacks Nezara spp. in Japan

Southern USA
One record ex N. viridula; attacks other species
North America, Hawaii Well adapted to N. viridula

Selected references

Greathead 1966, 1971;
Barraclough 1985
Cantrell 1984
Colazza & Bin 1995
Jones 1988
Aldrich 1995
Herting 1960
Takano 1956
Kiritani et al. 1963; Kiritani
& Sasaba 1969
Blanchard 1966; Mallea et
al. 1968; Gastal 1977a,b;
Liljesthršm 1980, 1981;
Ferreira 1984
Drake 1920
Drake 1920; Todd & Lewis
1976; Jones 1979;
Buschman & Whitcomb
1980; McPherson et al.
1982

Biological Control of Insect Pests: Southeast Asian Prospects

Geographic range

Table 4.12.1 (contÕd) Parasitoids of the green vegetable bug, Nezara viridula (modified after Jones 1988)
Parasitoid
DIPTERA

Geographic range

Known host relations

Selected references

TACHINIDAE (contÕd)
Trichopoda pilipes

West Indies, Hawaii

Well adapted to N. viridula

Trichopoda sp.

Uruguay

One record ex N. viridula

Myers 1931; Nishida 1966;
Davis 1967
Guido & Ruffinelli 1956

HYMENOPTERA
Esquivel 1950
Recorded only ex N. viridula

Ferreira 1981, 1984, 1986

Italy
Malaysia
East Asia

Bred ex N. viridula
Pentatomidae, Coreidae; described ex N. viridula
Lepidoptera, Heteroptera; produces only males in
N. viridula
Emerged ex imported eggs of N. viridula
Two records ex N. viridula
One record ex N. viridula

Colazza & Bin 1990
van der Vecht 1933
Hokyo et al. 1966b; Kiritani
& Sasaba 1969
Jones 1988
Jones 1988
Seymour & Sands 1993

ex N. viridula on macadamia

Jones 1992
Buschman & Whitcomb
1980
Hoffmann et al. 1991

Thailand
Southern USA
Australia
(Queensland)
Hawaii

Unidentified sp.
ENCYRTIDAE
Hexacladia hilaris

USA

One record ex N. viridula

Ooencyrtus californicus

California

ex N. viridula and other pentatomids

203

Brazil

Nezara viridula

Anastatus sp.
Anastatus sp.
Anastatus sp.

Argentina

4.12

EULOPHIDAE
Pleurotropitiella albipes
EURYTOMIDAE
Neorileya sp.
EUPELMIDAE
Anastatus bifasciatus
Anastatus dasyni
Anastatus japonicus

Parasitoid
HYMENOPTERA

Ooencyrtus nezarae
Ooencyrtus pityocampae
Ooencyrtus submetallicus
Ooencyrtus trinidadensis
Ooencyrtus sp.
Ooencyrtus sp.
Ooencyrtus sp.
Ooencyrtus sp.
Ooencyrtus sp.
Ooencyrtus sp. (spp.?)

Xenoencyrtus hemipterus
(= X. niger)
Xenoencyrtus rubricatus
Xenoencyrtus sp.

Known host relations

Morocco
California
Malaysia, Philippines

ex N. viridula and other pentatomids
Pentatomidae, Coreidae, Lepidoptera

Australia
Australia

Described ex N. viridula
Bred ex N. viridula

Selected references

VoegelŽ 1961
Hoffmann et al. 1991
van der Vecht 1933; Jones
et al. 1983
East Asia
Coreidae, Pentatomidae, Plataspidae; not uncommon Hokyo & Kiritani 1966
on N. viridula in Japan
Italy
Breeds in eggs of N. viridula and other pentatomids in Tiberi et al. 1991
the laboratory
West Indies, Central
Pentatomidae, Coreidae
Gahan 1927; Lee 1979; de
and South America
Santis 1985; Ferreira 1986
West Indies, Argentina Pentatomidae, Coreidae
Davis & Krauss 1963;
Davis 1967; de Santis 1985
Brazil
One record ex N. viridula
Ferreira 1986
Thailand
Emerged ex imported eggs of N. viridula
Jones 1988
Philippines
Possibly is O. malayensis
Davis 1967; Corpuz 1969
France
One record; recovered ex other pentatomids
Jones 1988
Italy
Bred ex N. viridula
Colazza & Bin 1995
Southern USA
Taxonomy and host range not known
Drake 1920; Buschman &
Whitcomb 1980;
Jones 1988
Australia
Seymour & Sands 1993
Riek 1962
Forrester 1979

Biological Control of Insect Pests: Southeast Asian Prospects

ENCYRTIDAE (contÕd)
Ooencyrtus fecundus
Ooencyrtus johnsoni
Ooencyrtus malayensis

Geographic range

204

Table 4.12.1 (contÕd) Parasitoids of the green vegetable bug, Nezara viridula (modified after Jones 1988)

Table 4.12.1 (contÕd) Parasitoids of the green vegetable bug, Nezara viridula (modified after Jones 1988)
Parasitoid
HYMENOPTERA

Geographic range

Known host relations

Selected references

Adair 1918
Ferreira & Moscardi 1995

Africa, Asia

Pentatomoidea; attacks N. viridula only in Thailand

Gryon japonicum
Gryon obesum

Japan, Brazil
Southern USA, Brazil

Gryon sp.
Gryon sp.

Australia
Laos

Gryon sp.
Psix lacunatus
Psix striaticeps

India
Asia, Australia
Africa, India
Togo

Telenomus chloropus

Palearctic

Telenomus comperei
Telenomus cristatus

Philippines
Southern USA, West
Indies

Anderson 1919; Dry 1921,
Jones 1988
native of Japan
Kishino & Teixeira 1994
Records ex N. viridula; attacks other pentatomids
Buschman & Whitcomb
1980; Masner 1983;
Hoffmann et al. 1991;
Correa & Moscardi 1995
Minor attack on N. viridula
Titmarsh 1979
One record ex N. viridula; may be G. fulviventris
Grist & Lever 1969; Dean
1978a,b
One record ex N. viridula, may be G. fulviventris
Yadava et al. 1982
Pentatomidae, Scutelleridae; ex N. viridula in Pakistan Johnson & Masner 1985
Pentatomidae; recorded once ex ÔNezaraÕ
Fouts 1934; Johnson &
Common on N. viridula and 2 other pentatomids
Masner 1985;
Poutouli 1995
Pentatomidae; major parasitoid of Nezara spp. in
Kiritani & Hokyo 1962;
E. Asia; females only in Japan
Hokyo & Kiritani 1963;
Johnson 1984a
Cadapan & Alba 1987
Known only ex N. viridula and Acrosternum hilare
Johnson 1984a; Orr et al.
1986

205

One record ex N. viridula

Nezara viridula

Egypt
Brazil

4.12

PTEROMALIDAE
Pteromalus sp.
3 spp.
SCELIONIDAE
Gryon fulviventris

Parasitoid
HYMENOPTERA
SCELIONIDAE (contÕd)
Telenomus cyrus

Telenomus mormideae
Telenomus pacificus
Telenomus podisi

Telenomus seychellensis
Telenomus sp.
Trissolcus aloysiisabaudiae
Trissolcus basalis

Trissolcus brochymenae

Known host relations

Java, Philippines,
Taiwan

Descr. ex N. viridula; host relations unknown

Selected references

Nixon 1936; Taiwan
Agricultural Research
Institute 1984; Jones 1988
East Asia
Pentatomidae, Coreidae; not well adapted to N. viridula Hidaka 1958; Hokyo &
Kiritani 1963
South America
Attacks N. viridula and other pentatomids
Ferreira 1986; Liljestršm &
Bernstein 1990
Philippines
Cadapan & Alba 1987
North and South
Pentatomidae; not well adapted to N. viridula
Buschman & Whitcomb
America
1980; Correa & Moscardi
1995; Orr et al. 1985a,
1986
East Africa
Attacks other spp.; may be common on N. viridula
Nixon 1935;
Croix & Thindwa 1986
Argentina
Minor attack on N. viridula eggs
Liljestršm & Bernstein 1990
Vietnam
van Lam 1996
East Africa
Reportedly common on N. viridula in cotton
Fouts 1930; Chiaromonte
1931; Paoli 1933
Most important parasitoid of N. viridula outside central Miller 1928; Kamal 1937;
N. & S. America, S.
Lever 1941; Buschman &
Europe, Africa, Hawaii, Africa and eastern Asia
Whitcomb 1980; Ferreira
Australia, New
1980; Orr et al. 1986;
Zealand, Fiji
Colazza & Bin 1995
N. and S. America
Recorded ex N. viridula; attacks other pentatomids
Johnson 1984b

Biological Control of Insect Pests: Southeast Asian Prospects

Telenomus gifuensis

Geographic range

206

Table 4.12.1 (contÕd) Parasitoids of the green vegetable bug, Nezara viridula (modified after Jones 1988)

Table 4.12.1 (contÕd) Parasitoids of the green vegetable bug, Nezara viridula (modified after Jones 1988)
Parasitoid
HYMENOPTERA
SCELIONIDAE (contÕd)
Trissolcus crypticus
Trissolcus euschisti
Trissolcus hullensis

Geographic range

Known host relations

Pakistan

ex Plautia crossota and Acrosternum gramineum; bred Clarke 1993a
readily in N. viridula in lab. in Australia and Hawaii
ex N. viridula and other pentatomids
Hoffmann et al. 1991
Recorded ex N. viridula; attacks other pentatomids
Johnson 1985

Trissolcus oenone
Trissolcus ogyges
Trissolcus rudus
Trissolcus scuticarinatus
Trissolcus sipius
Trissolcus solocis

Australia
Australia
Vietnam
South America
East Africa
Florida, Mexico

Trissolcus thyantae
Trissolcus urichi
Trissolcus utahensis
Trissolcus sp.

Eastern N. America
Brazil
California
Taiwan
India

Important parasitoid of N. viridula in Japan

one recent record
One record ex N. viridula; attacks other pentatomids
Descr. ex N. viridula but not reported since
Recorded ex N. viridula; attacks other pentatomids
Recorded ex N. viridula; attacks other pentatomids
ex N. viridula and other pentatomids
Recorded ex N. viridula; host relations unknown
Recorded ex N. viridula

207

Japan

Nixon 1936; Le Pelley 1979
Szab— 1981
Nixon 1935; Croix &
Thindwa 1986
Kiritani & Hokyo 1962;
Hokyo & Kiritani 1963
Johnson 1991
Seymour & Sands 1993
van Lam 1996
Ferreira 1986
Nixon 1936
Buschman & Whitcomb
1980; Johnson 1985
Johnson 1985
Ferreira & Moscardi 1995
Hoffmann et al. 1991
Taiwan Agricultural
Research Institute 1984;
Nath & Dutta 1994

Nezara viridula

Trissolcus mitsukurii

Descr. ex N. viridula, an apparently common host
Descr. ex N. viridula; nothing else known
N. viridula is only known host

4.12

Trissolcus lepelleyi
Trissolcus lodosi
Trissolcus maro

California
North America,
Venezuela
Central Africa
Turkey
Southern Africa

Selected references

208

Biological Control of Insect Pests: Southeast Asian Prospects

The role of pheromones and other chemical
secretions
Sexually mature male N. viridula release a pheromone that is a powerful
attractant for mature females and also attracts males and older nymphs, but
to a lesser extent. It is produced from the ventral abdominal epidermis
(Lucchi 1994). The principal ingredient of the mixture of compounds
(obtained from extracts of male cuticle), isolated from bugs collected in
southern France, is the sesquiterpene (z)-a-bisabolene trans epoxide,
whereas the accompanying cis isomer is not attractive (BrŽzot et al. 1993).
The pheromone blend differs between some Brazilian (which do not produce
the cis compound) (Baker et al. 1987) and North American, Hawaiian and
Japanese bug populations which do, but in differing ratios. Other related
pentatomids (e.g. the North American Acrosternum hilare) emit mixtures
containing distinctive ratios (but containing more cis isomers) of the same
sesquiterpenes as in N. viridula (Aldrich et al. 1989). Males of the native
Japanese Nezara antennata and Acrosternum aseadum produce speciesspecific pheromone blends based on the same compounds as Nezara
viridula. However, whereas the trans/cis 1,2 epoxide ratio of N. antennata is
within the range for most USA. N. viridula populations (3 to 4.4:1), the
blend from Japanese N. viridula males is 0.82:1 to 1:1. The ratio for Italy
was 2.16:1, for Brazil 2.28 to 4.67:1, and for Australia 3.90:1. The ratios for
Acrosternum hilare, A. marginatum and A. pennsylvanicum are 6:100, 7:100
and 94:100 respectively (Aldrich et al. 1989, 1993). However, the situation
is not clearcut. Brezot et al. (1994) studied the proportions of cis and trans
bisabolene epoxides in individuals of a southern France (SF) and a French
West Indies (FWI) strain of N. viridula. The trans isomer composed 42 to
82% of bisabolene epoxides in SF males and 74 to 94% of FWI males.
Means differed significantly in spite of this inter-individual variation. Ryan
et al. (1995) also found variability in the ratio of isomers within a single
N. viridula population in Australia.
It is interesting that the pheromone mixture from mature males in
southeastern United States is also highly attractive to the tachinid parasitoid
Trichopoda pennipes (Aldrich et al. 1987), which lays far more eggs on male
than on female N. viridula. Trichopoda spp. and a group of related tachinids
are native to the Americas, where they attack a small group of native
pentatomid bugs. It is postulated that the chemical similarity of the
Acrosternum and Nezara pheromones facilitated the adoption by the
tachinids of N. viridula when it reached the Americas (see below).
Furthermore, that the immigrant populations of N. viridula released both the
trans and cis isomers and that parasitisation by the tachinids preferentially

4.12

Nezara viridula

209

attracted to the cis isomer provided the major selection pressure leading to
the present N. viridula populations having predominantly the trans isomer in
their pheromone mix. Perhaps in parallel, in the 200 years or so of interaction
between N. viridula and T. pennipes in tropical America, N. viridula has
evolved a shorter pre-oviposition period and a longer developmental period
than an Italian population (Hokkanen and Pimentel 1984; Aldrich et al.
1989). At all events, at least two distinct pheromone strains of N. viridula
can now be distinguished, based on the presence or absence in the volatile
secretions of the cuticle of cis-(z)-a-bisobolene epoxide. Mature N. viridula
males of one population from Brazil produce the trans, but not the cis isomer
(Baker et al. 1987), whereas males from 2 other populations do in ratios of
2.28:1 and 4.67:1 respectively (Aldrich et al. 1993), similar to males from
southern USA which produce the trans and cis isomers in a 3:1 ratio (Aldrich
et al. 1987) and those from Southern France in a 2:1 ratio (Baker et al. 1987).
A quite different, but somewhat analogous situation, occurs with the
hymenopteran Trissolcus basalis. A short chain unsaturated aldehyde, (E)2-decenal present in the defensive scent produced in the adult N. viridula
metathoracic gland (Gilby and Waterhouse 1965) is attractive to female
T. basalis. A different compound, secreted on the eggs by the ovipositing
female N. viridula, attracts female T. basalis to the egg raft (Mattiacci et al.
1991, 1993). This compound is produced in the bug ovary and serves as an
adhesive for attaching the eggs to the oviposition substrate. The adhesive
and the material(s) responsible for the kairomone activity were partly
soluble in water and completely in acetone and elicited recognition
behaviour from T. basalis females when applied to glass beads. The
adhesive appears to be a mucopolysaccharide-protein complex (Bin et al.
1993).

Attempts at biological control
Early attempts at biological control were made chiefly in Australia and the
Pacific, countries where the introduction of the bug was comparatively
recent, but many other countries have been involved in more recent times.
AUSTRALIA
N. viridula was first reported in Australia in 1916 and soon became a
widespread and serious pest. In 1933 the scelionid wasp Trissolcus basalis
was introduced from Egypt into Western Australia (Table 4.12.2) where it
readily became established and produced a great reduction in the pest status
of the green vegetable bug. From Western Australia the parasitoid was
distributed widely throughout south and southeastern Australia, making a
considerable impact on the bug, except in cultivated areas in inland eastern
Australia, where the cold winters affected its abundance (Wilson 1960).

210

Biological Control of Insect Pests: Southeast Asian Prospects

Additional strains were later liberated of what, at the time, was believed to be
T. basalis. These originated from the West Indies (1953), Italy (1956) and
Pakistan (1961). However, doubt has been cast on the specific identity of the
Italian material, although T. basalis is known to occur there. The Pakistan
material, originally identified as T. basalis (but probably containing two
species) has recently been shown (Clarke 1993a) to have consisted mainly of
a new species Trissolcus crypticus. This bred readily in N. viridula eggs in
the laboratory and, later, was widely distributed in Australia and Hawaii.
However, T. crypticus has not been reported since in field collections.
For many years up to the mid 1960s N. viridula was a very common and
serious pest in the Canberra district, damaging tomatoes and beans in
particular. This situation changed dramatically following the liberation of
the material from Pakistan (presumably both T. basalis and T. crypticus)
and, since then, N. viridula has become a very uncommon insect, appearing
only in extremely limited numbers late in the season and only every few
years. A great improvement also resulted about the same time in other
subcoastal eastern cultivated areas, credited by Ratcliffe (1965) also to the
liberation of material from Pakistan.
However, since T. crypticus apparently did not become established its
role, if any, in the changed situation is unclear. It is not known whether any
cross mating with T. basalis might have occurred, which might have
resulted in greater adaptability of T. basalis to the Canberra environment.
The continuing very low abundance of N. viridula is possibly attributable to
a heavy attack on its eggs by a resident population of T. basalis which is
maintained on native pentatomid hosts, of which there are several (see later).

Table 4.12.2

Introductions for the biological control of Nezara viridula

Country and species
ANTIGUA
Anastatus sp.
Trichopoda pilipes
Xenoencyrtus hemipterus (= X. niger)

Liberated From
1961Ð62
1949
1955
1963

Result

Reference

Pakistan
Florida
Montserrat
Australia

Ð
Ð
Ð
Ð

Cock 1985
Cock 1985
Cock 1985
Cock 1985

Australia, Hawaii

+

Crouzel & Saini 1983; Porta & Crouzel 1984

Kenya
Japan
Japan
Japan
Egypt
West Indies
Italy
Pakistan
USA
Brazil
South Africa
Pakistan
Japan
Argentina

_
Ð
Ð
?
+
+
+
+
+
+
+
Ð
+
?

Greathead 1971
Callan 1963
Field 1984
Field 1984; J. Turner pers. comm. 1984
Kamal 1937; Wilson 1960
Wilson 1960
Wilson 1960
Ratcliffe 1965
Field 1984
J. Turner pers. comm. 1984
J. Turner pers. comm. 1984
Clarke 1993a
Callan 1963
Liljesthršm 1994

ARGENTINA
Trissolcus basalis

1981

AUSTRALIA
Bogosia antinorii
Telenomus chloropus
(= T. nakagawai)

Nezara viridula

Trissolcus crypticus
Trissolcus mitsukurii
Trichopoda giacomelli

4.12

Trissolcus basalis

1958
1962
1980
1981
1933
1953
1956
1961
1979Ð82
1979Ð82
1979Ð82
1961
1962

211

Country and species
Trichopoda pennipes

Liberated From

Result

212

Table 4.12.2 (contÕd) Introductions for the biological control of Nezara viridula
Reference

Ð
Ð
Ð
Ð
Ð
+
Ð
Ð
Ð
Ð
Ð

Wilson 1960
Wilson 1960
Wilson 1960
Michael 1981
Michael 1981
Giangiuliani et al. 1994; Colazza & Bin 1995
Wilson 1960
Michael 1981
Michael 1981
Wilson 1960
CSIRO files

Gryon japonicum
Gryon obesum
Ooencyrtus nezarae
Telenomus chloropus
Telenomus gifuensis
Trissolcus mitsukurii

Japan
USA
Japan
Japan
Japan
Japan

+
+
Ð
Ð
Ð
+

Trissolcus sp.

Japan

Ð

Kishino & Teixeira 1994
Correa & Moscardi 1995
Kobayashi & Cosenza 1987
Kobayashi & Cosenza 1987
Kobayashi & Cosenza 1987
Kobayashi & Cosenza 1987;
Kishino & Teixeira 1994,
Kobayashi & Cosenza 1987

France
Italy
Spain

+
+
+

Hoffman et al. 1991
Hoffman et al. 1991
Hoffman et al. 1991

Trichopoda pilipes

Ooencyrtus submetallicus

BRAZIL

CALIFORNIA
Trissolcus basalis

1987
1987
1987

Biological Control of Insect Pests: Southeast Asian Prospects

Florida
Florida
Florida
Florida
Florida
Italy
West Indies
West Indies
Hawaii
Trinidad
Trinidad

1941Ð43
1949Ð50
1952Ð53
1980
1980
?
1952Ð54
1980
1980
1953Ð57
1962

Table 4.12.2 (contÕd) Introductions for the biological control of Nezara viridula
Country and species
CHILE (EASTER ISLAND)
Ectophasiopsis arcuata
Trissolcus basalis

Liberated From
1982, 1985/6 Chile
1982
Chile

Result

Reference

+
Ð

Ripa & Rojas 1989; Ripa et al. 1995
Ripa & Rojas 1989; Ripa et al. 1995

COOK IS
Trissolcus basalis

1950

New Zealand

?

Cumber 1953, Walker and Deitz 1979;
A. Walker pers. comm. 1984

1941
1949

Australia
Florida

+
?

Lever 1941, 1943
OÕConnor 1950

1962
1962

Australia
Australia

+
Ð

Davis 1964, 1967
Davis 1964, 1967

1967
1962
1962
1962
1962
1962
1966

Japan
Australia
West Indies
Florida
West Indies
West Indies
Japan

Ð
Ð
+
+
Ð
Ð
Ð

Davis & Chong 1968
Davis 1964, 1967
Davis 1964, 1967
Davis 1964, 1967
Davis 1964, 1967
Davis 1964, 1967
Davis & Krauss 1967

FIJI
Trissolcus basalis
Trichopoda pennipes

HAWAII
4.12
Nezara viridula

Trissolcus basalis
Xenoencyrtus hemipterus
(= X. niger)
Telenomus chloropus
Telenomus sp.
Trichopoda pilipes
Trichopoda pennipes
Ooencyrtus submetallicus
Ooencyrtus trinidadensis
Trissolcus mitsukurii

213

Country and species
ITALY
Trichopoda pennipes

1984 or
earlier
1989
1989

Result

Reference

?
?

+
+

G.K. Waite pers. comm.
Gianguiliani & Farinelli 1995; Colazza et al. 1996a

?

+

Colazza & Bin 1995

Fiji

+

Anon. 1979b; Williams 1979;
Dhamaraju pers. comm. 1985

1961Ð62
1966

Pakistan
Japan

Ð
Ð

Cock 1985
Cock 1985

1965Ð67
1949
1962

West Indies
Florida
Australia
Australia

Ð
Ð
+
Ð

Jones 1988
Cumber 1967; Clausen 1978
Cumber 1951
Jones 1988

1942Ð43

Fiji

+

Lever 1943

Australia

+
+
Ð
Ð

Anon. 1983
Young 1982
J.W. Ismay pers. comm. 1985
Young 1982

KIRIBATI
Trissolcus basalis

1979

MONTSERRAT
Anastatus sp.
Trissolcus mitsukurii

NEW ZEALAND
Ooencyrtus submetallicus
Trichopoda pennipes
Trissolcus basalis
Xenoencyrtus hemipterus

NEW CALEDONIA
Trissolcus basalis

PAPUA NEW GUINEA
Trissolcus basalis
Trichopoda pennipes
Trichopoda pilipes

1978
1977
1980Ð81

Hawaii
Hawaii

Biological Control of Insect Pests: Southeast Asian Prospects

Trissolcus basalis

Liberated From

214

Table 4.12.2 (contÕd) Introductions for the biological control of Nezara viridula

Table 4.12.2 (contÕd) Introductions for the biological control of Nezara viridula
Country and species
PITCAIRN IS
Trissolcus basalis

Liberated From

Result

Reference

1952

Fiji

?

Dumbleton 1957

1989

Hawaii

+

Esguerra et al. 1993

1953

Fiji

?

Dumbleton 1957

1953

?

+

Clausen 1978

+
_

CSIRO files
Dumbleton 1957
OÕConnor 1950

POHNPEI
Trissolcus basalis

AMERICAN SAMOA
Trissolcus basalis

SAMOA
Trissolcus basalis

SOLOMON IS
1940
Australia
1940, 1949, Florida
1950

SOUTH AFRICA
1955

Australia

+

Trichopoda pennipes

1986
1994

Florida
USA, Italy

?
?

Bedford 1964; Greathead 1971; Annecke & Moran
1982; Bennett 1990
Bennett 1990
Farinelli et al. 1994

1961Ð62
1966

Pakistan
Japan

Ð
Ð

Cock 1985
Cock 1985

1961Ð62

Pakistan

Ð

Cock 1985

?

+

Su & Tseng 1984

ST KITTS AND NEVIS
Anastatus sp.
Trissolcus mitsukurii

Nezara viridula

Trissolcus basalis

4.12

Trissolcus basalis
Trichopoda pennipes

ST VINCENT
Anastatus sp.

TAIWAN
1983

215

Trissolcus basalis

Country and species
TONGA
Trissolcus basalis

Liberated From

Result

216

Table 4.12.2 (contÕd) Introductions for the biological control of Nezara viridula
Reference

1941

Australia

+

Dumbleton 1957
Clausen 1978

1992

eastern USA

+

Pickett et al. 1996

1955

Australia

?

Annecke & Moran 1982

USA (CALIFORNIA)
ZIMBABWE
Trissolcus basalis

Biological Control of Insect Pests: Southeast Asian Prospects

Trissolcus basalis

4.12

Nezara viridula

217

Doubt has been cast (Clarke 1990) both on the policy and effectiveness
of introducing strains of T. basalis from different regions having differing
environmental conditions. This practice has either led in Australia to
effective biological control of N. viridula extending into additional
environments or, alternatively, the initial genetic make-up of T. basalis has
steadily undergone changes to allow progressive adaptation to new
environments. It is possible that T. basalis consists of a complex of sibling
species but, if not, it would be surprising if T. basalis has remained a
homogenous species worldwide. Johnson (1985) found that American
specimens of T. basalis showed much less morphological variation than
those of Africa suggesting an African origin for the species. Furthermore,
Handley (1975) reported that Australian T. basalis females would not mate
with American males, although Powell and Shepherd (1982) found that
reproductive isolation did not occur within any of 3 Australian strains
examined; or between them and a strain from Florida. Nevertheless, the
latter strain proved least fecund. Ferreira and Zamataro (1989) found no
differences in reproductive capacity or longevity between an Australian and
a Brazilian strain of T. basalis and Awan et al. (1989) concluded that Italian,
French and Spanish populations consist of a single biotype, although several
significant differences were observed in their biology. On the other hand,
differences in courtship behaviour have been observed between different
populations of T. basalis (Bin et al. 1988; Clarke and Walter 1992).
However, it is not known whether any of these differences has any
significance for biological control.
Three other wasps have been introduced, Trissolcus mitsukurii (Japan
1962), Telenomus chloropus (Japan 1962, Japan via USA 1980) and
Ooencyrtus submetallicus (West Indies 1952Ð53). Only the former is
believed to have become established but its impact has not been reported
(Field 1984; J. Turner pers. comm. 1985).
The only parasitoid reported from adult or nymphal N. viridula is the
native tachinid Cylindromyia rufifemur (Cantrell 1984; Coombs and Khan
1997). Three exotic species of parasitic tachinid fly have also been
employed in attempts at biological control of Nezara viridula, Trichopoda
pennipes from Florida, T. pilipes from the West Indies and Bogosia antinorii
from Kenya. The Trichopoda species were introduced into Australia in the
1940s and 1950s, but failed to become established (Wilson 1960). More
recently the Trichopoda species were introduced into Western Australia
from their native countries and also from Hawaii where they have been
successfully established (Michael 1981). They have not become established
in Australia. It is tempting to postulate that the pheromone blend secreted by
Australian N. viridula does not attract Trichopoda pennipes and T. pilipes

218

Biological Control of Insect Pests: Southeast Asian Prospects

females, whereas that of the Hawaiian population does. Whether or not this
is true, it is clear that the responses by tachinid females to host pheromones
introduces a considerable degree of host specificity to some particular
populations of a host.
The Argentinian Trichopoda giacomellii has been introduced to
Australia for examination in quarantine for host specificity. Tests indicate
that it has a limited host range involving only Nezara and its very close
relations and it has now been approved for release in Australia (D.P.A.
Sands pers. comm. 1997).
At least three native wasps parasitise Nezara eggs, Telenomus sp.,
Xenoencyrtus hemipterus and ÔCoruna sp.Õ (certainly a misidentification of
genus, Z. Boucek pers. comm. 1986), but these are of minor importance.
The successful biological control of N. viridula in southern Australia has
been repeated more recently in northwestern Australia where the green
vegetable bug was first recorded in 1974. By 1976 populations were
immense, for example over 33 nymphs and adults being recorded per square
metre on a tomato crop and over 20 per head on badly affected sorghum.
Since T. basalis was not present, it was introduced from southwestern
Australia. Although more than 44 000 were released, initial establishment
was poor. However, after 4 months, the situation improved dramatically,
parasitisation was close to 100% and damage was reduced to sub-economic
levels (Strickland 1979), although there are still periods of crop growth
when the pest may be a problem (Michael 1981).
T. basalis attacks, sometimes heavily, the egg masses of a range of
pentatomid bugs. In southern Australia common pentatomid hosts are the
horehound bug Agonoscelis rutila (Noble 1937; Clarke and Walter 1994)
Cermatulus nasalis and Oechalia schellembergii (Awan 1989). In
northwestern Australia alternative pentatomid hosts include Piezodorus
hybneri and Oechalia schellenbergii, the egg masses of which suffer
respectively 68% and 51% parasitisation. The coreid bug Riptortus serripes
is also attacked, 38% of its egg masses being parasitised (Strickland 1979).
Nezara viridula is under excellent biological control and is generally a
very uncommon insect throughout southern Australia. However regular or
occasional damage occurs in a subcoastal zone extending from south east
Queensland (Titmarsh 1979) to north central New South Wales (e.g.
Forrester 1979) and into northern Victoria (Clarke 1992a) and especially on
soybeans.
In an attempt to control these damaging populations, nine strains of
T. basalis were introduced between 1979 and 1981, mass reared and
released in southeastern Queensland. One strain came from each of South
Carolina, Florida and Mississippi (USA), two from Brazil, two from South

4.12

Nezara viridula

219

Africa and two from northern Australia (Darwin and Kununurra). Although
a slightly higher level of parasitisation has resulted, the problem has not been
resolved (J. Turner, pers. comm. 1984; Clarke 1992a). It is notable that
N. viridula is seldom a pest except in regions where soybean is a major crop.
Turner (1983) showed that the rate of movement of T. basalis on soybean
Glycine max was a third of that on cowpea Vigna unguiculata, mungbean
V. radiata radiata, bean Phaseolus vulgaris, or sunflower Helianthus
annuus. The proportion of N. viridula eggs parasitised on soybean was down
to 25% of that on cowpea, mungbean and sunflower. Observations, since
contested by Kelly (1987), suggested that the arrangement and height of the
soybean leaf hairs, which are neither evenly spaced nor patterned, were
responsible for interfering with the waspsÕ searching activities and this
suggestion needs further investigation. Many soybean varieties have beeen
selected for cicadellid resistance, which is directly correlated with the
density, length and orientation of the leaf hairs (Broersma et al. 1972).
Sesame Sesamum indicum leaves were repellent to the wasps, and those that
did alight left immediately and engaged in vigorous grooming elsewhere
(Turner 1983). Thus the nature of crops in an area can materially affect the
success of biological control of the green vegetable bug.
In spite of the foregoing, a claim has been made (Clarke 1990, 1992a,b,
1993a,b, Clarke and Walter 1992), that, in Australia, Ôthere is little evidence
to support claims of successful biological control of N. viridulaÕ (Clarke
1993b). It is a mystery how such a view can be maintained in the light of the
abundant evidence, available to its authors, from Western Australia, South
Australia and coastal and southern New South Wales (Wilson 1960; Callan
1963; Ratcliffe 1965; Strickland 1979; Michael 1981; Field 1984;
Waterhouse and Norris 1987). Furthermore, until the 1970s, when
increasing plantings of soybean, in particular, have provided highly suitable
conditions for N. viridula populations to increase greatly in southern
Queensland and northern New South Wales, there were even publications by
entomologists in the Queensland Department of Primary Industries that,
with the exception of the Darling Downs, Ôcontrol of the pest has become
virtually unnecessary resulting from the introduction and establishment of a
tiny parasite É Õ (Passlow and Waite 1971) and Trissolcus basalis Ôhas
reduced the importance of Nezara viridula (L.) in coastal QueenslandÕ
(Smith 1977). The highly effective control progressively achieved over a
vast area of southern and Western Australia is in no way diminished in
validity by the fact that N. viridula is, indeed, an important pest in a much
smaller area extending from southeast Queensland, through central NSW to
northern Victoria (Clarke 1992a). Although it is most commonly associated
there with soybean (see later under Italy) it is also found on a range of other
crops, including grain legumes, tomatoes and beans.

220

Biological Control of Insect Pests: Southeast Asian Prospects

Clarke and Walter (1992) postulate that, because N. viridula oviposits
only rarely during summer in southeast Queensland, T. basalis is largely
without its preferred host for 60Ð90 days during which daily temperatures
average more than 25¡C. This exceeds the average survival time of adult
females at this temperature. Adult survival of T. basalis in summer is thus
held to be the most likely factor limiting its populations. This postulate
assumes that the egg masses of native pentatomid hosts of T. basalis are also
in short supply over summer. It also appears not to apply to the far hotter but
moister climate of the Ord Irrigation Area in far northern Western Australia,
where N. viridula continues to be under generally excellent control.
AFRICA
N. viridula does not appear to be regarded as an important pest in northern
Africa where its eggs are attacked by a number of Scelionidae, including
Trissolcus aloysiisabaudiae, T. basalis, T. lepelleyi, T. maro, T. sipius and
Telenomus seychellensis. Trissolcus basalis occurs mainly in coastal areas
and the others are reported primarily from the eastern and central half of the
continent. T. basalis was introduced to South Africa from Australia, New
Zealand and USA, although there is some evidence that it may have already
occurred there prior to these introductions (Giliomee 1958; Greathead
1971). In Malawi eggs laid on macadamia were reported to experience an
average of 74% parasitisation by Trissolcus maro and Telenomus
seychellensis (Croix and Thindwa 1986). In Somalia Trissolcus
alloysiisabaudiae is very abundant and may cause 100% parasitisation of
N. viridula eggs on cotton (Paoli 1933). T. lepelleyi and T. sipius attack
N. viridula eggs in East Africa, the latter being known only from Kenya.
Psix striaticeps, which occurs in tropical Africa and India, has been bred
from N. viridula eggs (Jones 1988).
ARGENTINA
N. viridula was first recorded in 1919. Since the native tachinid parasitoid
Trichopoda giacomellii was unable to maintain populations at sufficiently
low levels, three parasitoid wasps were introduced, of which the most
effective is Trissolcus basalis (Crouzel and Saini 1983; Porta and Crouzel
1984).
In Buenos Aires Province, mortality of N. viridula eggs was found to be
due mainly to parasitisation by T. basalis, that of 1st to 3rd instar nymphs to
predation and that of adults (together with reduction in egg production) to
parasitisation by Trichopoda giacomellii. Adult mortality and reduction in
egg production was found to be density dependent. Three egg parasitoids
were present, Trissolcus basalis (95% of total parasitisation), Telenomus
mormideae and Telenomus sp.. Nymphal mortality was principally due to
spiders and predatory bugs (Podisus sp.), although there was also some

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parasitisation by Trichopoda giacomellii. Adverse climatic conditions
(heavy rain) played a minor role in nymphal mortality (Liljesthršm and
Bernstein 1990). Parasitisation of N. viridula eggs by T. basalis rose to a
maximum of 90% in autumn although 33% of the parasitoids died, the
majority (60%) in the pupal stage (Liljestršm and Camean 1992).
BRAZIL
In Rio Grande do Sul the main causes of mortality of N. viridula eggs laid
throughout the season on soybean were infertility (2.7%: relatively
constant), failure to hatch (14.1%: fluctuating), parasitisation (24%:
relatively constant) and predation (17.3%: relatively constant) (Moreira and
Becker 1986a). Three scelionid parasitoids were present, T. basalis,
Trissolcus sp. and Telenomus mormideae. T. basalis killed a greater number
of eggs and attacked a larger number of egg rafts than the other species
(Moreira and Becker 1986b). A complex of polyphagous predators did not
discriminate between parasitised and unparasitised eggs and were
responsible for 25.5% mortality. The predators were responsible for 17.3%
mortality of N. viridula and 34% of T. basalis (Moreira and Becker 1986c).
Predation on host eggs was the main cause of mortality of T. basalis in the
pre-emergence period (Moreira and Becker 1987).
The tachinid fly Trichopoda giacomellii (= Eutrichopodopsis nitens) is
the most important parasitoid of N. viridula in northern Paran‡ State. The
level of parasitoid attack varies according to the plant on which the host is
feeding and is highest when soybean is not available (Panizzi 1989).
Although T. basalis (introduced) and Telenomus mormideae (native) were
already present on the Cerrados area, Kobayashi and Cosenza (1987)
introduced from Japan 5 additional species. In order of decreasing efficacy
in parasitisation and adult emergence these were Trissolcus mitsukurii,
Ooencyrtus nezarae, Telenomus chloropus, Telenomus gifuensis and
Trissolcus sp.. Of the introduced species, T. mitsukurii parasitised eggs of all
major pentatomid species throughout the year and also survived the dry
winter season. In addition, it was the dominant competitor on egg masses.
However, Bennett (1990) reports, more recently that it is not definite that
permanent establishment has been achieved. When compared with
T. basalis, the latter parasitised about 90% of exposed eggs with 60% adult
emergence, whereas T. mitsukurii achieved about 70% parasitisation and
40% emergence (Kobayashi and Cosenza (1987). In northern Brazil,
Ferreira (1986) reported 40% parasitisation of N. viridula eggs by T. basalis
and that Telenomus mormideae was also abundant.
In the Federal District of Brazil the egg parasitoids Trissolcus mitsukurii
and Gryon japonicum, introduced from Japan, gave good levels of
parasitisation (Kishino and Teixeira 1994). In Parana State T. basalis,

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Telenomus podisi and Gryon obesum parasitised up to 60% of Nezara eggs
on soybean (Correa and Moscardi 1995).
In southern Brazil, T. basalis is the main parasitoid, attacking between
97.5% and 100% of N. viridula eggs laid on soybean. In 1988, 36.6% of the
egg masses were attacked and 10.3% in 1989, with 21.8% and 6.3% of the
individual eggs being parasitised respectively (Foerster and QueirÏz 1990).
COOK IS
T. basalis was introduced to Mangaia in 1950, but is not known to have
become established (Cumber 1953; Walker and Deitz 1979) and this must be
assumed not to have occurred.
EASTER IS
Control of N. viridula was achieved by the establishment of the tachinid
Ectophasiopsis arcuata from mainland Chile, so that it is now difficult to
find a bug. T. basalis was also introduced but was not recovered (Ripa and
Rojas 1989; Ripa et al. 1992).
FIJI
N. viridula was first recorded in 1939 and Trissolcus basalis was introduced
from Australia in 1941 (Lever 1941). Success was immediate and good
control resulted (OÕConnor 1950). Large populations of N. viridula are
reported to develop sometimes on cowpeas, but the insect is not troublesome
on other legumes (Swaine 1971).
Trichopoda pennipes was introduced from Florida in 1949, but its
establishment is not recorded (OÕConnor 1950).
HAWAII
N. viridula was first recorded in 1961 and the wasps Trissolcus basalis,
Xenoencyrtus hemipterus (= X. niger) and Telenomus sp. (all egg
parasitoids) from Australia were released in 1962. Other importations in
1962 were the tachinid fly, Trichopoda pilipes, which parasities last instar
nymphs and adults, and two egg parasitic wasps Ooencyrtus submetallicus
and O. trinidadensis from the West Indies. In 1963 Trichopoda pennipes
was imported from Florida. Of these parasites, Trissolcus basalis,
Trichopoda pennipes and T. pilipes became established (Davis and Krauss
1964; Davis 1964, 1967; Croix and Thindwa 1967; Clausen 1978). Nezara
populations declined steadily to sub-economic levels, with only sporadic
outbreaks, and the species is generally under effective biological control
(C.J. Davis, pers. comm. 1985). Average parasitisation by Trissolcus basalis
ranged up to about 95% and by Trichopoda pilipes up to 86%. Trichopoda
pupae are occasionally parasitised by the encyrtid Exoristobia philippensis
(Davis 1964).
More recently (1990Ð91) egg rafts of N. viridula placed in weeds at the
border of macadamia nut plantations had significantly higher rates of

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parasitisation (49.9%) than rafts placed in the canopy of macadamia trees
(14.7%). Predators were more effective at locating rafts placed in trees than
in weeds and were always more efficient than T. basalis, regardless of their
location. The egg parasitoid, Anastatus sp. was equally inefficient in both
habitats. In 1990 only 1.2% of the eggs in the trees were parasitised and 8.6%
in the weeds. During the same period, predators destroyed 26.0% and 14.5%
in trees and weeds respectively.
In 1991 parasitisation of eggs dropped to 0.2% and 1.7% in trees and
weeds, whereas predation increased to 47.7% and 36.9% respectively.
Doubt was, therefore, cast upon T. basalis having a prominent role in
biological control of N. viridula in Hawaii (Jones 1995). Although this
conclusion appears to follow in the macadamia agroecosystem studied, it
would be of interest to know whether it applies also to other susceptible
crops. Predation was attributed mainly to ants, including Pheidole
megacephala.
INDIA
Singh (1973) reported no parasitoids in life-table studies of N. viridula on
soybeans.
INDONESIA
Partial life tables showed on soybeans in Northern Sumatra that mortality of
N. viridula until the late 1st instar was 50 to 87%, of which 18 to 85%
occurred during the egg stage and was caused mainly by predators. Only 2 to
26% of the eggs were parasitised. The main predators were two species of
ants (Solenopsis geminata and Dolichoderus sp. a staphylinid beetle
(Paederus sp.) and several crickets, although other egg predators belonging
to the families Tettigoniidae, Lygaeidae and Anthocoridae were also
observed feeding on the eggs. Trissolcus basalis parasitised the eggs but no
evidence was obtained of the presence of tachinid parasitoids that attack late
nymphs and adults (van den Berg et al. 1995).
ITALY
Before production of soybeans began in Italy in 1981 N. viridula was only
important occasionally. Crops attacked included tomatoes and legumes. The
increasing production (over a decade more than a thousand fold increase in
area planted to soybeans) filled a temporal and food gap for N. viridula and
other pentatomids (Colazza and Bin 1990). The second generation of
N. viridula now migrates each summer into soybeans at the beginning of
development of pods, which then provide the main food for reproduction
and larval development. Abundance of N. viridula increased steadily in the
eighties throughout northern and central Italy to a level at which it became a
key pest. Three parasitoids were recorded from egg rafts, Anastatus
bifasciatus, Ooencyrtus sp. and Trissolcus basalis. However the first 2

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Biological Control of Insect Pests: Southeast Asian Prospects

species were never bred from egg rafts collected from soybeans.
Approximately 20% of egg rafts were parasitised in 1986 and 1987,
increasing to 50% in 1988 to 1992. Efficiency of parasitisation (% eggs
parasitised divided by the number of egg masses discovered) was 65% in
1986, but rose to 92% in 1988 and 1990.
The early larval instars were generally free from parasitoid attack
although two tachinids were occasionally recorded, the native Ectophasia
crassipennis (5 to 10% parasitisation) and the accidentally introduced
Trichopoda pennipes (2 to 15% parasitisation).
T. basalis was also recovered from the eggs of 2 other pentatomid bugs
present at low levels in soybean fields, Carpocoris mediterraneus and
Piezodorus lituratus (Colazza and Bin 1995).
JAPAN
The widespread Telenomus chloropus (= T. nakagawi) and also Trissolcus
(= Asolcus) mitsukurii which is known only from Japan are the two most
important parasitoids of N. viridula and have been studied intensively in
Fukuoka. The host-finding ability of T. chloropus is superior to that of
T. mitsukurii and it parasitises egg masses more rapidly and more
efficiently. Females lay about 100 eggs (which is 1.6 times that of
T. mitsukurii and live 11 days, or 3 days longer than T. mitsukurii (Nakasuji
et al. 1966), although the latter may have at least 11 generations a year,
whereas the former has some 9 generations (Hokyo et al. 1966b). Hokyo et
al. (1966a) have shown experimentally that the two species do not
discriminate between each otherÕs parasitised and unparasitised eggs, with
T. mitsukurii larvae usually being successful in competition with
T.chloropus larvae (Hokyo et al. 1966a). Furthermore, female T. mitsukurii
often bite and kill female T. chloropus when they meet on the egg mass
(Hokyo and Kiritani 1966). It follows that the effectiveness of T. chloropus
is reduced by the presence of T. mitsukurii (Nakasuji et al. 1966), so it would
be undesirable, in a biological control program, to introduce the latter along
with the former. However, it should be borne in mind that T. mitsukurii is
more abundant than T. chloropus in the southern coastal district of Fukuoka,
whereas the reverse is true for the northern mountainous districts. The
combined mortality caused by the two species amounted to 60 to 90% of the
first spring generation N. viridula eggs.
Three minor parasitoids have been bred from Nezara eggs in Fukuoka
and several others are present elsewhere. The first, Telenomus gifuensis, is
an effective parasitoid of Scotinophara lurida eggs, and also attacks a range
of other pentatomids (Hidaka 1958; Hokyo et al. 1966b). The second,
Ooencyrtus nezarae, the smallest of the three, is known from Nezara
viridula, N. antennata and Anacanthocoris concoloratus. The third,

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225

Anastatus japonicus, is known as an egg parasitoid of the gypsy moth
Lymantria dispar and other Lepidoptera (Hokyo et al. 1966b).
KIRIBATI
N. viridula was a pest on the islands of Betio and Tarawa in the 1970s.
T. basalis was released in 1978 and, since 1984, this pest has not been
recorded from Tarawa (E. Dharmaraju pers. comm. 1985).
NEW CALEDONIA
Trissolcus basalis was introduced in 1942Ð43 and became established
(Lever 1943; Clausen 1978).
NEW ZEALAND
N. viridula was first recorded in 1944 and soon became a serious pest of
many crops. T. basalis was introduced from Australia in 1949 and rapidly
became widely established. There followed a gradual decline in the severity
of plant damage and, although populations continued to fluctuate seasonally,
the situation became satisfactory (Cumber 1949, 1951, 1953, 1964). Over
this period T. basalis extended its host range to other pentatomid bugs (e.g.
Cuspicona simplex and Glaucias amyoti), thereby providing a source of
parasitoids to attack any eggs of Nezara that became available. Adaptation
of T. basalis to Nezara under New Zealand conditions may also have been
responsible for its improved performance (Cumber 1964).
Trichopoda pennipes, originally from Florida, was obtained from
Hawaii in 1965 and released over the next 3 summers. Evidence of a
generation in the field was obtained in May 1967, but the fly did not become
established. In addition to Nezara viridula, eggs were deposited on adults of
other pentatomids Antestia orbona, Cermatulus nasalis, Cuspicona simplex,
Glaucias amyoti and Dictyotus caenosus, but a parasitoid was reared only
from G. amyoti whose nymphs are readily parasitised (Cumber 1967).
PAPUA NEW GUINEA
N. viridula is a serious pest in the Markham Valley where T. basalis is
present, but generally results in less than 30% parasitisation. In 1978 a strain
of this parasite from Western Australia was released, but the level of
parasitisation did not increase (Young 1982). In Wau T. basalis and another
scelionid egg parasite are generally effective, although N. viridula
occasionally increases to pest proportions (Gagne 1979). The tachinid
parasites Trichopoda pennipes and T. pilipes were introduced from Hawaii
but failed to become established (J.W. Ismay pers. comm. 1985).
T. giacomelli is being considered for release.
PHILLIPINES
Three decades ago it was reported that N. viridula was not a pest, apparently
being controlled by a native egg parasitoid, Ooencyrtus sp. (Cendana, in
Davis 1967) and it is interesting that Nezara was reported as present, but
unimportant, in 1993 (Waterhouse 1993b). This may possibly be correlated

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with the fact that soybean production in the Philippines is rather limited
Ñmuch lower than in many other Southeast Asian countries, such as
Thailand, Indonesia and Vietnam. Two egg parasitoids Telenomus comperei
and T. pacificus have been reported from N. viridula eggs laid on
groundnuts. Both species parasitised 100% of offered eggs in 24 hours and
adults emerged after 12 to 14 days. Adults lived up to 32 days when fed
honey (Cadapan and Alba 1987).
POHNPEI
N. viridula became a major pest in the early 1990s on several islands in the
Federated States of Micronesia. Following the introduction of T. basalis
from Hawaii, the green vegetable bug population has become so low that it is
rarely seen now on vegetables in Pohnpei (Esguerra et al. 1993; Suta and
Esguerra 1993).
SAMOA
Trissolcus basalis was introduced in 1953 and became established (Clausen
1978).
SOLOMON IS
Trissolcus basalis was introduced from Australia in 1940 against the
coconut spathe bug Axiagastus campbelli. It is said to be established
(CSIRO files) and a Trissolcus sp. has been recorded from pentatomid eggs
(N. viridula or Plautia brunneipennis) on beans (R. Macfarlane pers. comm.
1985).
Trichopoda pennipes was introduced from Florida via Fiji in 1950 in
order to control the coconut bug Amblypelta cocophaga and other
phytophagous bugs (OÕConnor 1950), but it has not been collected since.
SOUTH AFRICA
Trichopoda pennipes was introduced from USA and Italy and liberated in
1994 (Farinelli et al. 1994; van den Berg et al. 1994) but there is no
information on establishment. T. giacomelli has also been imported for
study (D.P.A. Sands pers. comm. 1997).
TAIWAN
T. basalis was introduced in 1983 and, two months after release,
parasitisation rates of 90% and 60% respectively of N. viridula eggs at two
sites was reported (Su and Tseng 1984).

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THAILAND
The most abundant egg parasitoid is Gryon fulviventris, which exists as a
number of biotypes. Under a series of synonyms (Dissolcus fulviventris,
Hadronotus fulviventris, H. antestiae and Gryon antestiae) it is known from
Africa, India, Thailand, southern USSR and Malaysia. It parasitises the eggs
of many species of Pentatomidae, Scutelleridae and Coreidae, but was
reported by Jones (1988) for the first time in N. viridula eggs in Thailand,
where it also breeds in the eggs of Piezodorus hybneri. In Africa larvae
develop in Nezara viridula eggs, but adults do not emerge successfully.
Other egg parasitoids are Telenomus chloropus, Ooencyrtus nezarae,
Anastatus sp. (Jones et al. 1983b; Jones 1988), Telenomus sp. and Trissolcus
basalis (Napompeth 1990).
TONGA
Trissolcus basalis was imported in 1941 and became established (Clausen
1978).
USA
The influence of the host plant on which egg rafts of N. viridula are laid on
the level of both parasitisation and predation was investigated in North
Carolina by Shepard et al. (1994). Parasitisation was higher than predation
on eggs on tomato and about equal in okra, soybean and cowpea. In one year,
predation was higher than parasitisation in soybean towards the end of the
growing season, but parasitisation was higher early in the season in okra and
cowpea. Parasitisation of egg masses in wild radish reached a peak of nearly
100% during spring and declined to about 30% in autumn. The major
parasitoid from all crops was Trissolcus basalis, although Ooencyrtus
submetallicus occured in low numbers. The conclusion was reached that
both parasioids and predators may play an important role in regulating
populations of N. viridula and that their combined action often resulted in
the attack of 100% of egg masses in some crops.
VANUATU
N. viridula occurs in Vila where its eggs are heavily parasitised by a wasp
Trissolcus sp. (not T. basalis) (R. Weller pers. comm. 1986).

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Biology of the major species
Scelionidae: Hymenoptera
This is the most important family of hymenopterous parasitoids emerging
from the eggs of N. viridula and is dealt with, amongst others, by Nixon
(1935, 1936, 1937, 1966).

Trissolcus basalis
Kamal (1937) was the first of many to make a detailed study of the impact of
the egg parasite Trissolcus basalis on the abundance of Nezara viridula: no
control measures are needed in Egypt. His work on the biology of the wasp
has been supplemented by studies by many later workers (e.g. Wilson 1961;
Cumber 1964; Powell and Shepherd 1982; Correa and Moscardi 1993, 1994;
Awadalla 1996; Colazza et al. 1996b). The minute female of T. basalis
oviposits in the side of the bug egg, after which she marks the egg by rubbing
an abdominal secretion over it with the ovipositor, as a deterrent to other
females from laying in the same egg. The length of the life cycle ranges from
9 to 24 days depending on temperature, the entire egg, larval and pupal
stages being passed inside the same eggshell. The adult wasps chew their
way out through the lid of the eggshell, males usually emerging first and
disputing with one another for possession of the egg batch and thereby the
right to fertilise the later-emerging females. In hot weather the females live 4
to 15 days and have considerable dispersive powers, as shown by the
rapidity with which they spread through newly colonised areas. The adult
wasps overwinter among leaves and litter.
As indicated earlier, there is good evidence for the existence of several
different strains of T. basalis. Experimental work using strains from three
widely separated regions of Australia and from Florida showed that they
were not reproductively isolated, that the Australian strains had a higher
fecundity, but that adults of the Florida strain lived longer (Powell and
Shepherd 1982).
T. basalis is frequently recorded from several other pentatomids, but has
a special preference for N. viridula (Jones 1988). It appears to be most
effective in coastal and subcoastal areas and has been established in
Argentina, Australia, Fiji, Hawaii, Kiribati, Papua New Guinea, New
Caledonia, Samoa, Solomon Is, South Africa and Tonga and possibly in
several other countries (Table 4.12.2).
In Australia two species of the pteromalid Acroclissodes are parasitic on
T. basalis (Clarke and Seymour 1992).

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Gryon sp.
Some aspects of mating and reproduction of Gryon sp. in India have been
investigated by Velayudhan and Senrayan (1989).

Trissolcus mitsukurii
This important egg parasitoid of Nezara in Japan also attacks the eggs of
several other pentatomids (Kishino and Teixeira 1994) , preferring species
that deposit their eggs in small masses. It is bisexual and the first egg
deposited by a mated female always produces a male. Both sexes have
aggressive behaviour and females drive Telenomus chloropus females off a
pentatomid egg mass (Hokyo et al. 1966b). The fecundity and longevity of
T. mitsukurii were found to be less than those of T. basalis in laboratory
trials at 26¡C and 65% RH. T. basalis parasitised 82.2% of eggs on the
second day of adult life, whereas T. mitsukurii parasitised only 51.3%. On
average, the former laid 250 eggs and the latter 80, and the longevity of
T. basalis was 80.1 days and of T. mitsukurii 42.6 days (Ferreira and
Zamataro 1989).
Too little is known about the dozen other Trissolcus species in Table
4.12.1 to form an opinion of their value in biological control.

Telenomus chloropus (= T. nakagawai)
This is one of the most important egg parasitoids of N. viridula in Japan and
also attacks eggs of N. antennata. Females are parthenogenic, lay about 100
eggs and live for 11 days. They have a high searching ability and can
parasitise all egss in a raft (Nakasuji et al. 1966). The species is oligophagous
and prefers large egg rafts of pentatomids, such as those of N. viridula or
N. antennata, to smaller egg masses of many other pentatomids. When
introduced to the laboratory in Louisiana, USA. females lived for 8 days at
24¡C, laid on average 60 eggs and developed from oviposition to emergence
in 18 days. When reared from eggs of N. viridula which had been reared on
resistant soybean its fecundity was half that of parasitoids reared on
susceptible soybean and its mortality within Nezara eggs was higher (Orr et
al. 1985b).
Although morphological differences have not been found, it appears that
T. chloropus exists as a series of biotypes. It is a widespread polyphagous
parasitoid of pentatomid eggs throughout the Palaearctic Region, but it is
recorded from Nezara only in Japan, Korea and Thailand. The Japanese
biotype rarely produces males, although males occur elsewhere (Jones
1988). T. chloropus from Japan has been released in Australia (Callan 1963;
Field 1984), Brazil (Kobayashi and Cosenza 1987) Hawaii (Davis and
Chong 1968) and the USA (Jones 1988), but has not become established,
possibly due to its requirement for high humidity (85% RH or higher) for
successful emergence (Orr et al. 1985a).

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Biological Control of Insect Pests: Southeast Asian Prospects

Telenomus cyrus
This parasitoid is known from Indonesia, the Philippines and Taiwan. In
Taiwan it parasitises up to 19% of eggs in soybean and is the most important
egg parasitoid of N. viridula in soybean, rice and jute (Taiwan Agricultural
Research Institute 1984).

Encyrtidae: Hymenoptera
Species of Ooencyrtus have been recorded from N. viridula eggs from many
parts of the world (Table 4.12.1), but are never a major component of the
suite of parasitoids.

Ooencyrtus submetallicus
This species ranges from Florida through to West Indies, Brazil and
Argentina (Jones 1988). It was found to be inferior to T. basalis in host
location and dispersal in soybeans in Louisiana (Lee 1979). It was
introduced to Australia, Hawaii and New Zealand, but did not become
established (Wilson 1960; Davis and Krauss 1963; Davis 1967).

Tachinidae: Diptera
These are clearly important parasitoids of adult N. viridula in the Americas
and the Ethiopian region. Outside of Japan, where one species attacking the
green vegetable bug is known, there appear to be no records of tachinids
regularly attacking N. viridula in Eastern Asia.

Trichopoda spp.
Trichopoda pennipes
T. pennipes in North America is a complex of biotypes or sibling species. In
the east its native hosts are the squash bug Anasa tristis, other coreids and
several pentatomids (Arnaud 1978). In the southeast it occurs regularly in
the native pentatomid Acrosternum hilare, but seldom in other pentatomids
(Jones 1988). In California it does not oviposit on A. tristis, but in the field
breeds in a pyrrhocorid and a largid bug (Sabrosky 1955; Dietrick and van
den Bosch 1957). Salles (1991, 1993) has studied T. pennipes in Florida.
The female Trichopoda pennipes lays eggs singly on the cuticle, mainly
of the undersurface of fourth and fifth instar nymphs and adult bugs. The
eggs hatch in 3 to 4 days and the young larvae bore directly into the host, tap
the respiratory system of the bug for air and feed on the body fluids and
internal organs of the host. When fully fed (16 days), the third instar larvae
forces its way out through an intersegmental membrane of the host abdomen
and pupates in the soil. After about 14 days the adult fly emerges. Up to 232
eggs are laid by a female and, unlike Trissolcus basalis, there is often great
wastage, many eggs (up to 237) being laid by several females on one adult
bug, although only one parasitoid larva survives (Shahjahan 1968). The

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231

reproductive organs of the host bug may or may not be aborted by the
feeding of the parasite, and it ultimately dies from mechanical injury caused
by the emerging larva. The parasitoid overwinters as a second instar larva
inside the hibernating adult bug (Beard 1940; Clausen 1978). Rearing
methods are discussed by Gianguiliani and Farinelli (1995). Male
N. viridula receive more parasitoid eggs than females and are more heavily
parasitised (Mitchell and Mau 1971; Todd and Lewis 1976).
In Georgia, USA, female Nezara parasitised by T. pennipes live about
half as long as normal females and lay about a quarter the number of fertile
eggs (Harris and Todd 1980).

Trichopoda pilipes
In the West Indies, instead of T. pennipes, the closely related T. pilipes
(sometimes regarded as a subspecies) occurs. Both species have been
established in Hawaii and T. pilipes is the more important (Davis 1967).
Unsuccessful attempts have been made to establish one or both of these
species in Australia, Fiji, South Africa and a number of other places,
although T. pennipes has been established in Italy (Table 4.12.2).

Trichopoda giacomellii
Parasitisation levels by T. giacomellii of N. viridula in Argentina were
45.3% on sorghum, 42.1% on flax, 29.9% on wheat and 27.9% on soybean.
Levels on males were higher than on females, except on soybeans, where
there was no significant difference (La Porta 1990). Liljesthršm (1985,
1995) observed that the highest densities of parasitoids and the highest rate
of parasitisation occurred in areas with the highest densities of N. viridula.
Many fly eggs are laid on some individual hosts and few or none on
others. More eggs are deposited on adult N. viridula than on 4th or 5th instar
nymphs and more on adult males than on females. Some bugs are attacked
sufficiently late in their development that they are able to produce at least
one normal egg batch which has unaffected egg viability. In one study less
than 7% parasitised nymphs died in the 5th instar. This resulted in sufficient
eggs being laid to enable N. viridula to persist in the environment
(Liljesthršm 1992, 1993a,b). In the laboratory at 26¡C, 70% RH and a 16hour day, the egg, larval and pupal stages lasted 2.8, 33.0 and 13.3 days
respectively and females laid an average of 29 eggs (La Porta 1987).
On hatching, young larvae penetrate the host cuticle and, on moulting to
the 2nd instar, attach their posterior spiracles to one of the hostÕs tracheal
trunks. The fully grown 3rd instar larva emerges from the host to pupate in
the soil. Most hosts die shortly after the parasitoid larva has left.
In one large field sample the maximum number of living parasitoid
larvae found per host was 2 (4% of hosts), whereas only 1 living parasitoid

232

Biological Control of Insect Pests: Southeast Asian Prospects

larva was found in 66% of hosts. Small, dead, damaged parasitoid larvae in
some hosts provided evidence that there was competition for survival
(Liljesthršm 1993b).
Because moulting led to loss of unhatched eggs with the discarded
cuticle, eggs laid on nymphs less frequently led to successful parasitisation
than eggs laid on adults. With 1 parasitoid egg per adult, success was greater
on males than on females whereas, when more than 4 eggs were present, the
success rate was higher with females (Liljesthršm 1991). T. giacomellii
parasitised 100% of N. viridula adults for 3 consecutive generations in an
uncultivated area near Buenos Aires (Liljesthršm 1981) and it was
concluded that T. giacomellii could regulate the population of N. viridula
(Liljesthršm and Bernstein 1990).
T. giacomellii (at times referred to incorrectly as Eutrichopodopsis
nitens) is also an important parasitoid of N. viridula in Brazil. When
parasitisation occurred in nymphs or newly moulted adults, adults did not
reproduce and longevity was greatly reduced. Female N. viridula,
parasitised on the 7th day of the adult stage, had their fecundity reduced by
58%, but neither egg fertility nor size was affected (Ferreira et al. 1991).
Parasitisation by T. giacomellii collected in the field in Brazil from soybean
and other crops ranged from 27.1% to 52.7%. More parasitised eggs were
found on males than on females and most eggs were on the thorax (Ferreira
1984). High rates of parasitisation of N. viridula by T. giacomellii were
observed on the weed Leonurus sibericus, but populations transferred to
nearby soybean when this entered the reproductive phase. On the other hand,
bugs living on castor, Ricinus communis, stayed on this plant all year round.
This weed is of low nutritional value to them, but on it they are less liable to
attack by the tachinid (Panizzi 1989).
A recent laboratory study of the reproductive attributes of T. giacomelli
determined the influence of adult food availability and body size on
fecundity, and longevity, both relevant to any introduction program
(Coombs 1997).
Little is known about other Trichopoda species attacking pentatomid
bugs: T. lanipes in Florida (Drake 1920), Trichopoda sp. in Uruguay (Guido
and Ruffinelli 1956) and possibly other species in Brazil (Jones 1988).

Bogosia antinorii
This species is widespread in eastern and southern Africa and is known only
from N. viridula (van Emden 1945; Barraclough 1985). There was
apparently an unsuccessful attempt to establish it in Australia from material
from Kenya (Greathead 1971).

4.12

Nezara viridula

233

Ectophasiopsis arctuata
This tachinid is common on N. viridula adults in Chile. Following its
introduction to Easter Is it brought this bug under successful biological
control (Ripa and Rojas 1989).

Gymnosoma rotundata
This tachinid parasitises N. viridula in Japan where up to 5% parasitisation is
recorded (Kiritani et al. 1963). It is widespread in Palaearctic regions and
attacks many hosts, including Nezara antennata, in Japan and Korea.
Gymnosoma clavata has been recorded once from N. viridula in Europe
(Herting 1960).
One other tachinid has been reported once from N. viridula,
Cylindromyia rufifemur from Australia (Cantrell 1984).

Comments
Although predators are undoubtedly important natural enemies of
N. viridula, particularly of its early stages, most are generalists which are
unlikely to be approved nowadays by quarantine authorities for introduction
as biological control agents. This situation is likely to be partly offset by the
fact that most countries possess a suite of generalist predators, some of
which are likely to attack N. viridula.
The species of egg parasitoid most closely associated with N. viridula
are concentrated in Africa and Japan. Elsewhere its eggs are parasitised by
introduced species or by native species that have expanded their activities
from native bugs. Indeed, it seems likely that the complex of Japanese
parasitoids has probably expanded its host range from the oriental stink bug
N. antennata of Japanese origin, just as the complex of Central and South
American tachinids has clearly expanded to N. viridula adults from adults of
native bugs.
Successful biological control of N. viridula has been achieved in many
countries to which it has spread this century. These include a vast area (but
not all) of Australia, also New Zealand, Hawaii and several other Pacific
islands. The prospects are good for reducing its pest status in many other
areas where effective parasitoids are not yet present. This might involve the
introduction of additional species or strains of Trissolcus. In addition several
of the many other parasitoids known to attack eggs (species in the genera
Telenomus and Gryon) are well worth considering. In the Ethiopian region a
tachinid (Bogosia antinorii) is an important parasitoid of adults and large
nymphs and in the Americas there are at least 4 tachinid species worthy of
consideration: Trichopoda pennipes: USA; T. pilipes: West Indies;

234

Biological Control of Insect Pests: Southeast Asian Prospects

T. giacomelli Argentina; and Ectophasiopsis arcuata: Chile. These 4 are
reported to be more abundant now on N. viridula than on the native bugs
they parasitised before the arrival of N. viridula (Jones 1988). A problem in
their effective use is that location of N. viridula hosts is dependent, in some
species at least, upon the secretion by N. viridula of a specific attractive
blend of chemicals. Some biotypes of N. viridula that do not produce the
appropriate blend largely escape oviposition. There are no records of
tachinids regularly attacking N. viridula in the East Asian Region, except for
the widespread, polyphagous Gymnosoma rotundata, which was found to
cause up to 5% parasitisation of N. viridula in Japan and also to attack
N. antennata in Japan and Korea (Kiritani et al. 1963).
The main areas where N. viridula continues to be an economically
important pest in spite of attempts to use natural enemies including
T. basalis appear, with the exception of certain crops such as macadamia and
pecan nuts, to be associated with extensive plantings of soybeans. A detailed
re-examination is required of the behaviour of T. basalis (and perhaps other
egg parasitoids) in relation to ability to parasitise N. viridula egg masses laid
on soybean. If it is demonstrated that certain physical or chemical
characteristics of soybeans are responsible for poorer than usual
performance, serious consideration should be given to the selection of
varieties that have minimal adverse effects on the parasitoids. This, of
course, is different from selecting soybean cultivars that are resistant to
N. viridula, some of which are known (e.g. Kester et al. 1984; Bowers 1990).
In this context it is relevant that the biology of Telenomus chloropus, an
egg parasite introduced into southern USA in 1982 from Japan, was studied
on eggs of N. viridula that had been reared on the stink bug-resistant
soybean, PI 717444, or on the susceptible cultivar, Davis. Time of
development of the parasite did not differ significantly in eggs from either
source, but success of emergence was lower from eggs laid on resistant
soybean and fecundity of those that did emerge was about half of that of
individuals reared from eggs laid on Davis. The authors (Orr et al. 1985b)
point out that, with a marked reduction in emergence and fecundity,
combined with decreased host availability, there is the potential for
reduction or elimination of resident parasite populations in fields of resistant
soybeans.
Comparatively little is known of the range of Nezara parasitoids in its
centre of origin, namely the Ethiopian region, although at least 6 Scelionidae
including T. basalis have been recorded, together with the apparentlyspecific, widespread tachinid Bogosia antinorii, whose effectiveness
deserves study. It is probable that a thorough investigation in the Ethiopian
region would disclose an additional range of potentially valuable species.

235

4.13

Ophiomyia phaseoli

China
P

India

Taiwan
P

Myanmar
20°

+

Laos

20°

++

++

Thailand

Philippines

+

Cambodia
Vietnam

++

++

P
Brunei

Malaysia


+



Singapore

Papua
New Guinea

+++

Indonesia

++

20°

Australia

20°

It appears that the bean fly Ophiomyia phaseoli originated in Asia. Its most effective
natural enemy, the braconid Opius phaseoli, is known from eastern Africa, India and the
Philippines and has been introduced to Hawaii and Taiwan. This species is capable of
parasitisation levels of up to 90% or more and, when introduced to Hawaii, it and the related
O. importatus resulted in successful biological control of bean fly.
There are good reasons for countries where bean fly is a problem and where
parasitisation levels are low, to consider introducing these and other parasitoids to assist in
reducing bean fly populations.

236

Biological Control of Insect Pests: Southeast Asian Prospects

Ophiomyia phaseoli (Tryon)
Diptera: Agromyzidae (this species was earlier included in the
genus Agromyza or Melanagromyza) bean fly

Rating
Southeast Asia
14

+++
++
+
P

Indo
Laos, Viet, Msia,
Phil
Myan, Thai, Sing
Brun

China

Southern and Western Pacific
9

P

+++
++
+
P

Guam
Fiji, PNG
Sam, Sol Is
FSM

Origin
Unknown, but presumably in association with one of its current legume host
genera in India or possibly Southeast Asia. It was described by Tryon (1895)
from specimens causing damage to beans in 1888 in Queensland, Australia
and, shortly after, reported to cause similar damage in New South Wales
(Froggatt 1899).

Distribution
This was given (CIE 1974a) as Africa: Burundi, Congo (Zaire), Egypt,
Ethiopia, Kenya, Madagascar, Mauritius, Malawi, Mali, Nigeria, RŽunion,
Rwanda, Senegal, South Africa, Sudan, Tanzania, Uganda, Zambia,
Zimbabwe; Asia: Bangladesh, China, Hong Kong, India, Indonesia, Iraq,
Israel, Jordan, Malaysia, Myanmar, Nepal, Pakistan, Philippines, Ryukyu Is,
Singapore, Sri Lanka, Taiwan, Thailand; Australia and Pacific Islands:
Australia, Caroline Is, Fiji, Hawaii, Irian Jaya, Mariana Is, Papua New
Guinea and Samoa. To the above must be added Israel (Spencer 1990)
Brunei, Laos, Singapore (Waterhouse 1993b) and Japan (Makino et al.
1990). It has not been recorded from Europe or the Americas.
A morphologically very similar species, O. spencerella, only readily
distinguishable from O. phaseoli by the male genitalia, occurs in association
with it in Kenya, Uganda, Tanzania and Nigeria on Phaseolus vulgaris and,
less commonly, on several other legumes. There are 3 economically
important agromyzid miners other than Ophiomyia phaseoli that attack
much the same legumes in Asia. Melanagromyza (= Agromyza) obtusa is
widely distributed in India as a pest of the developing seeds of chick and
pigeon peas. The stem miners M. sojae and M. dolichostigma are pests of
soybean in Indonesia, Japan and Taiwan and damage French beans and
cowpeas in Sri Lanka and East Africa (Singh and van Emden 1979).

4.13

Ophiomyia phaseoli

237

Biology
The adult O. phaseoli is a small fly (females 2.2 mm and males 1.9 mm in
length), shiny black in colour except for legs, antennae and wing veins,
which are light brown (Abul-Nasser and Assem 1966). Females generally
oviposit in bright sunlight in the upper surface of the cotyledons (soybeans)
or young leaves of its many hosts, laying from 100 to 300 eggs during a
2Ðweek period (Otanes y Quesales 1918). Not all ovipositor punctures
receive an egg, many provide sap which the females ingest (Goot 1930). On
hatching from the egg after 2 to 4 days, the young larva forms a short leaf
mine before tunneling into the nearest vein. Next the petiole is mined and the
larva then moves down the stem (Taylor 1958). In young plants the main
feeding takes place in the lower layers of the stem and the tap root may be
penetrated. When larvae are numerous, some feed more deeply inside the
stem and higher up in the plant.
The larval and pupal stages occupy 7 to 10 days and 9 to 10 days
respectively, resulting in a life cycle of about 3 weeks (Taylor 1958; Ooi
1988). However, the life cycle may be as short as 17 days in the field in
Malaysia (Khoo et al. 1991) and in the laboratory in India at 24¡ to 31¡C as
short as 11 days (Singh et al. 1991). At the other end of the scale, at higher
altitudes in Java, the larval stage can be extended from 17 to 22 days and the
pupal stage from 13 to 20 days (Goot 1930). Pupation occurs head upwards
beneath the epidermis and generally near the base of the stem (Greathead
1969). In older plants, larvae may pupate at the base of the petioles.
Talekar and Lee (1989) have developed a method for mass rearing bean
fly on newly-germinated soybean cotyledons, permitting one person to
produce 2 000 adults per day.

Host plants
Bean fly is known to attack at least 40 plant species. Most of its important
hosts belong to the legume tribe Phaseoleae and particularly to the genus
Phaseolus. The very susceptible P. vulgaris (French, kidney, haricot, runner
or snap bean) is of Central American origin as are several other economic
species of Phaseolus. However, from the point of view of the possible origin
of O. phaseoli in Asia, all of the Asiatic species formerly placed in the genus
Phaseolus have now been placed in the genus Vigna (Verdcourt 1970) and it
is relevant that a number of important Vigna species are believed to have
originated in India or nearby (Purseglove 1968). These include
V. aconitifolia (moth bean), V. aurea (green or golden gram, mung bean)
V. calcarata (rice bean) and V. mungo (black gram, urd bean). Other
important hosts include Cajanus cajan (pigeon pea: origin Africa); Glycine

238

Biological Control of Insect Pests: Southeast Asian Prospects

max (soybean: southern China); Lablab niger (= Dolichos lablab) (hyacinth
bean: India); Pisum sativum (pea: southwestern Asia); and Vigna
unguiculata (cowpea: Africa) (Purseglove 1968; Spencer 1973). Wild hosts
include Canavalia ensiformis, Crotalaria juncea, C. laburnifolia,
C. mucronata, Macroptilium atropurpureum, M. lathryoides, Phaseolus
panduratus, P. semierectus and Vigna radiata (Goot 1930; Kleinschmidt
1970; Spencer 1973; Abate 1991).
There is a large variation in susceptibility between different cultivars of
susceptible species. This variation affords an important opportunity to select
cultivars that suffer comparatively little damage and is being extensively
investigated (e.g. Annappan et al. 1984, Gill and Singh 1988; AVRDC 1990,
Talekar and Hu 1993; Talekar and Tengkano 1993; Gupta et al. 1995). Both
morphological and chemical characteristics are involved (Chiang and Norris
1983).

Damage
O. phaseoli can be a limiting factor in the cultivation of susceptible legumes
in Southeast Asia and most other regions where it occurs. Spencer (1973)
and many other authors consider it to be one of the most serious of all
agromyzid pests. Losses of 50% to 100% of crops are reported from many
parts of the world, and are particularly heavy under dry conditions.
Although some leaves may wilt as a result of mining and petiole
tunnelling, most damage results from destruction of tissue at the junction of
the stem and root. When damage is limited, plants may survive by forming
adventitious roots (e.g. with P. vulgaris and soybeans) and produce a limited
crop. However, seedlings most frequently die. Plants that do not respond
rapidly to root damage and develop adventitious roots are liable to break off
at ground level during windy periods. When infestations are heavy, the
aggregation of puparia within the stem results in it swelling, splitting open
and rotting. De Meijere (1922) reported that young plants in Sumatra
generally died when they contained 10 to 20 larvae. In Egypt, 25 larvae and
pupae have been found in a single bean plant (Hassan 1947) and as many as
320 in a cowpea plant (Abul-Nasr and Assem 1966).
Seed treatments or post emergence sprays with broad spectrum
insecticides have been used to control O. phaseoli but, inter alia, they
undoubtedly have serious adverse effects on its parasitoids. Useful control
has been obtained by intercropping, the use of resistant varieties, adjusting
planting dates, crop rotation and other cultural methods such as planting into
rice stubble or covering the newly sown areas with rice straw. It is clear,
however, that, in areas where effective parasitoids are already present, these
can play an important role in minimising bean fly damage if not interfered
with by insecticides.

4.13

Ophiomyia phaseoli

239

Natural enemies
More than 50 parasitic Hymenoptera have been reported from bean fly
(Table 4.13.1), almost all emerging from pupae, arising from eggs laid in
host larvae. No egg parasitoids are known and no dipterous parasitoids have
been recorded. Although figures for percent parasitisation are unavailable
from many countries where bean fly occurs, the levels recorded are
generally unimpressive, often less than 30%. The outstanding exception is
the 90% or more, often produced by the braconid Opius phaseoli in East
Africa and Ethiopia (Greathead 1969; Abate 1991) and similar levels from
Opius phaseoli and Eurytoma sp. in the Agra region of India (Singh 1982).
AUSTRALIA
Although Tryon (1895), who described Ophiomyia phaseoli from
Queensland specimens, believed it to be native to Australia, it has never been
recorded extensively from indigenous plants (Kleinschmidt 1970), so is
unlikely to have evolved there. Twelve parasitoids (two of them possibly
hyperparasitoids) (Table 4.13.1) emerged from O. phaseoli pupae taken
mainly from cowpea (Vigna unguiculata). A later re-examination of
Australasian Chalcidoidea by Bou‹ek (1988) indicates that only 11 species
were actually involved and none were hyperparasitoids. Bou‹ek (1988) lists
one additional parasitoid, the eurytomid Plutarchia bicarinativentris, which
also occurs in Papua New Guinea. The braconid Opius oleracei, which
attacks bean fly, has also been recorded from the widespread agromyzid
Chromatomyia horticola (= Phytomyza atricornis).
EAST AFRICA
Ophiomyia phaseoli was not reported in Uganda until the 1920s, Tanzania
until 1937 and Kenya until 1939. It occurs in close association with
Ophiomyia spencerella and also with O. centrosematis, a species which is
known also from Indonesia.
The bean fly is very heavily attacked in all climatic zones by the braconid
Opius phaseoli (usually of the order of 70% to 90% and even up to 94.4%
parasitisation), and relatively lightly (3% to 9%) by Opius importatus, by a
polyphagous pteromalid near Herbertia sp. (less than 1%) and by an
assemblage of chalcidoids. Puparia are also consumed by ants. Three wasps
found in small numbers were considered to be hyperparasitoids, namely
Norbanus sp. (Pteromalidae), Eupelmus sp. nr australiensis (= E. sp. nr
popa) (Eupelmidae) and Pediobius sp. (Eulophidae). In spite of the heavy
parasitisation by Opius phaseoli, sufficient bean flies survive in some
seasons to cause heavy infestations of plantings. These parasitoids are thus,
at times, unable to prevent economic damage (Greathead 1969).

Natural enemies of Ophiomyia phaseoli

Species
HYMENOPTERA
BRACONIDAE
Fopius sp.
Opius importatus

Opius oleracei
Opius phaseoli

Opius sp.
CHALCIDIDAE
1.
2.
3.
* probably Opius phaseoli (Fischer 1971a)

Country

Reference

Thailand

Taiwan

Burikam 1978; Burikam & Napompeth 1979,
Napompeth 1994
Greathead 1969, 1975
Raros 1975
Moutia 1932
Jack 1913; Taylor 1958
Kleinschmidt 1970
Greathead 1969
Greathead 1969
Abate 1991; Greathead 1969
Davis 1971, 1972; Fischer 1971a; Greathead 1975;
Raros 1975
Fischer 1963; Ipe 1987
Greathead 1969
Letourneau 1994
Greathead 1969
Fischer 1971b
N.S. Talekar pers. comm. 1994
Greathead 1969
Chu & Chou 1965

East Africa
Sri Lanka
Zimbabwe

Greathead 1969
Rutherford 1914b
Jack 1913

East Africa
Hawaii
Mauritius
Zimbabwe
Australia
Botswana
East Africa
Ethiopia
Hawaii
India
Madagascar
Malawi
Mauritius
Philippines
Taiwan
Zimbabwe

Biological Control of Insect Pests: Southeast Asian Prospects

Opius ?liogaster*

240

Table 4.13.1

Table 4.13.1 (contÕd) Natural enemies of Ophiomyia phaseoli
Species
HYMENOPTERA

Indonesia
Taiwan
Thailand

Goot 1930
Chu & Chou 1965
Burikam 1978

Ethiopia
Australia
Ethiopia
Ethiopia
Australia
Ethiopia
Thailand
Australia
Australia
Philippines
Ethiopia
Ethiopia
East Africa
India
Hawaii

Abate 1991
Bou‹ek 1988; Kleinschmidt 1970
Abate 1991
Abate 1991
Dodd 1917
Abate 1991
Burikam 1978; Napompeth 1994
Dodd 1917; Kleinschmidt 1970; Bou‹ek 1988
Kleinschmidt 1970
Litsinger 1987
Abate 1991
Abate 1991
Greathead 1969
Gangrade 1974; Ipe 1987
Raros 1975

Ophiomyia phaseoli

Meruana liriomyzae
Pediobius acantha
Pediobius sp.
Tetrastichus sp.
Unidentified

Reference

4.13

CYNIPIDAE
Cynipoide sp.
Eucoilidea sp.
Unidentified
EULOPHIDAE
Aprostocetus sp.
Chrysonotomyia douglasi
Chrysonotomyia sp. nr erythraea
Chrysonotomyia formosa
Chrysonotomyia sp.
Cirrospilus sp.
Euderus sp.
Hemiptarsenus varicornis
Hemiptarsenus sp.

Country

241

Species
HYMENOPTERA

Eupelmus sp.
EURYTOMIDAE
Eurytoma larvicola
Eurytoma poloni

Eurytoma spp. 2 ´





Plutarchia sp.
Plutarchia bicarinativentris
Plutarchia indefensa

Country

Reference

Ethiopia, East Africa
Australia
Egypt
Ethiopia
Australia
Ethiopia

Greathead 1969; Abate 1991
Kleinschmidt 1990
Abul-Nasr & Assem 1968
Abate 1991
Dodd 1917
Abate 1991

Australia
Egypt
Indonesia
Malaysia
Philippines
Australia
Egypt
Ethiopia
India
Indonesia
Taiwan
Malaysia
Philippines
Australia, PNG
Thailand

Kleinschmidt 1970; Bou‹ek 1988
Hassan 1947
Goot 1930
Ho 1967; Yunus & Ho 1980
Otanes y Quesales 1918
Dodd 1917; Kleinschmidt 1970
Abul-Nasr & Assem 1968
Abate 1991
Singh 1982; Ipe 1987
Goot 1930
Chu & Chou 1965
Ooi 1973
Litsinger 1987
Dodd 1917; Bou‹ek 1988
Burikam 1978

Biological Control of Insect Pests: Southeast Asian Prospects

EUPELMIDAE
Eupelmus ?australiensis
Eupelmus grayi
Eupelmus sp. nr urozonus

242

Table 4.13.1 (contÕd) Natural enemies of Ophiomyia phaseoli

Table 4.13.1 (contÕd) Natural enemies of Ophiomyia phaseoli
Species
HYMENOPTERA
PTEROMALIDAE
Callitula filicornis
Callitula viridicoxa
Callitula yasudi
Chlorocytus sp.
Cryptoprymna sp.
Halticoptera ?circulus
Halticoptera patellana
Halticoptera sp.

Sphegigaster hamygurivara
Sphegigaster rugosa

Ethiopia
Australia, PNG
Japan
India
Egypt
Taiwan
Ethiopia
Hawaii
Egypt
Taiwan
Ethiopia
East Africa
Australia
Sri Lanka
India
Ethiopia
India
Japan
India
Sri Lanka

Abate 1991
Bou‹ek 1988; Kleinschmidt 1970
Yasuda 1982
Kundu 1985
Abul-Nasr & Assem 1968
Chu & Chou 1965
Abate 1991
Greathead 1975; Raros 1975
Abul-Nasr & Assem 1968
Chu & Chou 1965
Abate 1991
Greathead 1969
Dodd 1917; Kleinschmidt 1970
Waterston 1915
Babu 1977
Abate 1991
Peter & Balasubramanian 1984
Yasuda 1982
Ipe 1987
Waterston 1915

Ophiomyia phaseoli

Oxyharma subaenea
Polycystus propinquus
Polycystus sp.
Sphegigaster brunneicornis

Reference

4.13

Herbertia sp.

Country

243

Species
HYMENOPTERA
PTEROMALIDAE (contÕd)
Sphegigaster stella

Sphegigaster sp.

Syntomopus shakespearei
Syntomopus sp.
Unidentified
TETRACAMPIDAE
Epiclerus sp. nr nomocerus
A NEMATODE

Country

Reference

Malaysia
Philippines
Ethiopia
Australia, PNG
Egypt
Indonesia
Japan
Philippines
Taiwan
Australia
Japan
Thailand

Ho 1967
Otanes y Quesales 1918
Abate 1991
Dodd 1917; Kleinschmidt 1970; Bou‹ek 1988
Hassan 1947
Goot 1930
Yasuda 1982
Litsinger 1987
Chu & Chou 1965
Kleinschmidt 1970
Yasuda 1982
Burikam 1978

Ethiopia

Abate 1991

East Africa
Thailand

Greathead 1969
Burikam 1978

Biological Control of Insect Pests: Southeast Asian Prospects

Sphegigaster stepicola
Sphegigaster voltairei

244

Table 4.13.1 (contÕd) Natural enemies of Ophiomyia phaseoli

4.13

Ophiomyia phaseoli

245

EGYPT
The bean fly was first reported in 1922, together with a parasitoid, later
identified as Sphegigaster voltairei (= Trigonogastra agromyzae)
(Pteromalidae). The eurytomid Eurytoma larvicola was also recorded
(Hassan 1947). Later, Abul-Nasr and Assem (1968) recorded 5 parasitoid
species emerging from bean fly puparia in the laboratory (Table 4.13.1), but
no information was provided on their effectiveness.
ETHIOPIA
O. phaseoli was first reported in the early 1970s from Phaseolus vulgaris
(French bean), Vigna unguiculata (cowpea) and soybean (Glycine max),
although economic damage occurred only on French bean. The leguminous
bush, Crotalaria laburnifolia was the only wild host which supported bean
fly and its 17 species of parasitoids throughout the year (Table 4.13.1). Of
these parasitoids, the pteromalids Sphegigaster stepicola and
S. brunneicornis were the commonest species, accounting for up to 44.5%
(average 26.2%) of total parasitisation on Crotalaria. Parasitisation by the
braconid Opius phaseoli averaged a low 5.6% (range 0% to 23.2%) on
Crotalaria, but it was the major parasitoid on French bean, accounting for
over 87% of the total parasitisation. Abate (1991) concluded from this that
the host plant plays an important role in Ophiomyia phaseoli population
dynamics, although it remains to be shown whether this applies equally to
the range of food legumes. It is, perhaps, relevant that the bean fly acts as a
true leaf miner on Crotalaria, the larvae mining and eventually pupating
within the leaf. This behaviour renders both stages more accessible to
smaller parasitoids than when larvae are in the deeper tissues of a bean stem.
The remaining 14 parasitoids recorded from Ethiopia (Table 4.13.1) were
classified as very rare, (defined by Abate (1991) as equal to or less than 10%
of total insect emergence) and together on average caused 9.6% mortality.
Observations suggested that mortality of French bean seedlings caused by
bean fly was much less severe in areas where the wild host, Crotalaria,
occurred (14.8% in 1987 and 3.8% in 1988) than in its absence (39.1% in
1987 and 36.1% in 1988 (Abate 1991)). This is circumstantial evidence that
natural enemies play an important part in regulating bean fly populations.
Negasi and Abate (1986) recorded a pteromalid Cyrtogaster sp. from
O. phaseoli on French beans but, as this was not mentioned in the later, much
more detailed paper on parasitoids by Abate (1991), it has not been included
in Table 4.13.1.

246

Biological Control of Insect Pests: Southeast Asian Prospects

HAWAII
Damaging populations of O. phaseoli built up rapidly and caused
widespread damage to cultivated legumes after it was first recorded in 1968.
The only parasitoid found attacking it at that stage was the pteromalid
Halticoptera patellana, a polyphagous European parasite of agromyzids
(Greathead 1975).
INDIA
Ophiomyia phaseoli is said not to cause as serious damage to food legumes
in India as it does elsewhere, especially in Indonesia and East Africa
(Talekar 1990).
The pteromalid Chlorocytus sp. was reported to parasitise 8% to 10% of
O. phaseoli puparia infesting stems of soybean (Glycine max) in the New
Delhi area (Kundu 1985). In Bangalore, the pteromalid Sphegigaster
brunneicornis, which emerged from bean fly puparia in cowpea, was the
only parasitoid recorded. The extent of parasitisation ranged from 16.7% in
July to 85.5% in September, but this did not achieve adequate control
because bean fly infestation rose from 12% in July to 68% in September
(Peter and Balasubramanian 1984). Ipe (1987) recorded four parasitoids (a
eurytomid, Opius phaseoli, Tetrastichus sp. and Sphegigaster rugosa) from
Agra. He commented that Ophiomyia phaseoli infestations are kept under
control by parasitoids and that the percentage of parasitisation reaches
appreciable levels each season. Babu (1977) reported Polycystus sp.
emerging from bean fly puparia and causing parasitisation ranging from
3.4% during February to 61% in August. However, the highest levels of
attack are those recorded at Agra by Singh (1982) for Opius phaseoli and
Eurytoma sp.. The parasitisation of bean fly infesting cowpea reached 46.2%
during early October, rising to 94% by the end of November. From
December to March these parasites effectively controlled Ophiomyia
phaseoli populations infesting cowpea, garden pea and Lablab niger (Singh
1982).
It appears that the different species of bean fly parasitoids in India may
not occur at all widely. Whether this is due to climatic limitations, sampling
from different hosts, or overall inadequate sampling of populations remains
to be determined.
INDONESIA
The most comprehensive account of the biology, hosts and parasitoids of
bean fly in Indonesia was published in Dutch by Goot (1930). This was
translated into English and republished in 1984 by the Asian Vegetable
Research and Development Center Taiwan. A summary appears in
Kalshoven (1981).

4.13

Ophiomyia phaseoli

247

Three agromyzids are pests of soybean and some other economically
important legumes in Indonesia: Ophiomyia phaseoli (by far the most
important), the soybean stem borer Melanagromyza sojae (which bores into
the pith of the stem, but seldom kills the plant) and the soybean top borer
M. dolichostigma (which bores into the tops and causes stunting). The first
two species have been known in Java since 1900.
Four bean fly parasitoids are known (Goot 1930: Table 4.13.1), but their
combined effect is generally low, parasitisation averaging 5.1%, with a
maximum of 42.4%. All species emerge from the host pupa. The most
effective species is the pteromalid Sphegigaster voltairei, which comprised
59.1% of the parasitoids. It is also the most important parasitoid of
Melanagromyza sojae and occasionally attacks M. dolichostigma. Next in
importance is the cynipid Cynipoide sp., contributing 10.5%: it also attacks
the two other agromyzids. Finally, Eurytoma poloni and Eurytoma sp. each
contribute 0.2% to the total. Both are more frequently bred from the two
other agromyzids.
MALAYSIA
The bean fly was first reported in Peninsular Malaysia in 1924 and is
regarded as the most important pest of green gram (Phaseolus aureus). It can
also cause serious damage to French bean and other legume crops. Two
parasitoids, which also occur in the Philippines, are Eurytoma poloni
(Eurytomidae) and Sphegigaster (= Paratrigonogastra) stella (Ho 1967).
Ooi (1973) recorded the eurytomid Plutarchia sp.
PHILIPPINES
The bean fly was first noticed in 1912, but was thought at the time to have
been present for some years. Two parasitoids are known, a more abundant
Eurytoma poloni (Eurytomidae) and a less abundant Sphegigaster stella, in
the ratio 60:47. Their joint parasitisation averaged 17% with a range from
6% to 49% (Otanes y Quesales 1918). Opius phaseoli was not recorded in
this study.
SRI LANKA
Ophiomyia phaseoli was first recorded in 1901. Several unidentified species
of hymenopterous parasitoids were bred by Rutherford (1914b) but,
although they Ôno doubt do a considerable amount of goodÕ, they were
unable to keep the fly in check.
TAIWAN
Chu and Chou (1965) reported a braconid (Opius sp.), 4 pteromalids
(Cryptoprymna sp., Halticoptera sp., Sphegigaster sp. and Eucoilidea sp.)
and a eurytomid (Eurytoma sp.) parasitoid attacking bean fly infesting
soybean and Rose et al. (1976) added another eurytomid (Plutarchia sp.).

248

Biological Control of Insect Pests: Southeast Asian Prospects

Chiang et al. (1978) surveyed the parasitoids of three agromyzids
infesting mungbean, namely Ophiomyia phaseoli, O. centrosematis and
Melanagromyza sojae. Parasitisation fluctuated considerably, surpassing
60% during July, but declining to nearly 0% in December and January. Since
there was a negative correlation between agromyzid populations and percent
parasitisation it was concluded that parasitoids played a role in controlling
agromyzid populations.
THAILAND
Surveys in several regions of Thailand for natural enemies of the major pest
of soybean (Ophiomyia phaseoli) revealed 5 species of hymenopterous
parasitoid and a nematode (Burikam 1978). The most important species
were Plutarchia indefensa (Eurytomidae) and Fopius sp. (Braconidae). A
eulophid, a pteromalid and a cynipid were less important (Burikam and
Napompeth 1979; Napompeth 1994). Parasitisation by P. indefensa
averaged 52.8% and two samples gave 7.5% and 5.9% for Fopius sp.
(Burikam 1978), although Napompeth (1994) later considered the two
species to be of equal importance. The cynipid wasp also attacked the bean
stem miner Melanagromyza sojae. On one occasion pupae containing 20 to
50 nematodes were recorded, with a pupal parasitisation rate of 4.6%
(Burikam 1978). A life table analysis showed that there was a densitydependent factor regulating bean fly populations (Burikam and Napompeth
1979).
Unless Fopius sp. (Braconidae) proves to be Opius phaseoli
(Braconidae) (which is present in both India and the Philippines), it appears
that O. phaseoli may not be widespread throughout Southeast Asia and may
be well worth distributing more widely. The identity of the Fopius sp. is to
be investigated (B. Napompeth pers. comm. 1994).
ZIMBABWE
Phaseolus spp. are the principal host crops damaged, but cowpeas (Vigna
sinensis) and soybeans (Glycine soja) are also attacked. Plantings in late
summer are usually only lightly infested and a braconid, identified as Opius
liogaster (but quite possibly O. phaseoli), exercises effective control in most
years (Taylor 1958). Earlier Jack (1913) had reported that a braconid larval
parasitoid was ineffective in controlling bean fly although it was bred freely
from O. phaseoli late in the season.

4.13

Ophiomyia phaseoli

249

Attempts at biological control
The only introductions for biological control of bean fly (Table 4.13.2) have
been of the two braconid parasitoids Opius phaseoli and O. importatus from
Uganda to Hawaii in 1969 (Davis 1971, 1972; Greathead 1975; Funasaki et
al. 1988) and of O. phaseoli from Hawaii to Taiwan in 1974Ð75 (N.S.
Talekar pers comm. 1994). In Hawaii both species rapidly became
established on Oahu and host density was soon markedly reduced. They
were introduced to other islands and, by 1971, on Kauai 100% of bean flies
sampled produced parasitoids: on Maui rates ranged from 25% to 83%. No
differences in the incidence of parasitisation were detected when
infestations on French bean and cowpea were compared. By 1973
O. importatus had become the dominant parasitoid and the polyphagous
Halticoptera patellana (which was already present) was only rarely
encountered (Greathead 1975). Surveys by Raros (1975) in 1973 and 1974
of three locations on Oahu revealed average parasitisation ranging from
8.3% to 23.5%, a result Talekar (1990) suggested might have been due to the
heavy use of insecticides diminishing the earlier effectiveness of the
parasitoids. In 1994 the bean fly was reported to be still a problem on young
seedlings, so that farmers usually apply one or two insecticide sprays after
seedlings emerge above the ground. Once the bean plant has developed a
couple of leaves the fly is no longer a problem (W.C. Mitchell pers. comm.).
Opius phaseoli was not recovered in Taiwan for the first two years after its
introduction in 1974Ð75 from Hawaii, but there have been recent reports of
its presence, in spite of the current excessive use of insecticides against bean
fly (N.S. Talekar pers. comm. 1994).

250

Table 4.13.2

Introductions for the biological control of Ophiomyia phaseoli
Origin

Liberated

Year

Result

BRACONIDAE
Opius importatus

Uganda

Hawaii

1969

+

Uganda
Hawaii

Hawaii
Taiwan

1969
1974Ð75

+
+

Opius phaseoli

Reference
Fischer 1971a; Davis 1971, 1972; Funasaki et
al. 1988; Greathead 1975; Raros 1975
Fischer 1971a; Raros 1975
N.S. Talekar pers. comm. 1994

Biological Control of Insect Pests: Southeast Asian Prospects

Species

4.13

Ophiomyia phaseoli

251

The more important parasitoids
The names of a number of species are now different from those used by
earlier authors. To enable cross referencing with those used in Table 4.13.1,
the older names are shown below, together with a summary of information
available on the biology of the more important species.

Callitula viridicoxa (= Eurydinotellus viridicoxa = Polycystomyia
beneficia) Hym.: Eurytomidae
Chrysonotomyia (= Achrysocharis) douglasi Hym.: Eulophidae
Chrysonotomyia ?erythraea Hym.: Eulophidae
Chrysonotomyia formosa Hym.: Eulophidae
The two latter species are widely distributed primary parasitoids attacking
bean fly infesting Crotalaria in Ethiopia, parasitisation ranging from 0% to
8.7% (average 2.6%). C. formosa has also been recorded from Liriomyza
trifolii infesting beans in Guam (Schreiner et al. 1986; Abate 1991).

Cynipoide sp. Hym.: Cynipoidea
This parasitoid has only been reported from Java, where Goot (1930) found,
from 90 samplings between 1919 and 1923, that it constituted 40% of the
parasitoids reared, although the level of parasitisation varied greatly. It also
emerged from puparia of Melanagromyza sojae and M. dolichostigma. It
occurred in both tropical lowland and cool highland conditions.

Euderus sp. Hym.: Eulophidae
A tentative assignation as Euderus ?sp. was made by Napompeth (1994) of
the tiny eulophid recorded by Burikam (1978) and Burikam and Napompeth
(1979). More than one parasitoid could be produced per bean fly host. The
female parasitoid oviposited in the first instar host larva and pupation
occurred during the hostÕs third instar, either within or alongside the host.
The pupal stage averaged 7 days (Burikam 1978).

Eurytoma poloni Hym.: Eurytomidae
This parasitoid has been recorded from Indonesia, Malaysia and the
Philippines, but little is known of its biology. It was recorded only once in
Java from Ophiomyia phaseoli so it is clearly not an important parasitoid of
the bean fly there. In fact, it generally emerges from Melanagromyza
dolichostigma. Adults live 22 to 28 days (Goot 1930).

Fopius sp. Hym.: Braconidae
This was referred to as Biosteres sp. by Burikam (1978) and Burikam and
Napompeth (1979), but altered to Fopius sp. by Napompeth (1994). Adults
emerged from bean fly puparia (one per host) and mated on the first day.
Within two days 27 mature and immature eggs could be counted per female.

252

Biological Control of Insect Pests: Southeast Asian Prospects

Two samples in August revealed parasitisation levels of 5.9% and 7.5%
(Burikam 1978).

Halticoptera ?circulus Hym.: Pteromalidae
This is a widespread primary parasitoid of agromyzid leafminers in many
parts of the world. It was recorded as very rare (² 10% parasitisation) on
bean fly in Ethiopia (Abate 1991).

Hemiptarsenus varicornis (= Neodimmockia agromyzae and
probably = Hemiptarsenus semialbicornis) Hym.: Eulophidae
This is a very widespread parasitoid of dipterous leaf miners, including
O. phaseoli and Liriomyza sativae. It occurs throughout tropical and
southern temperate countries of the eastern hemisphere. In Australia it is
common in many places along the eastern and southeastern coast. It also
occurs in New Zealand, New Caledonia, Fiji and Vanuatu; Malaysia, Sri
Lanka, India, Pakistan and Saudi Arabia; Senegal, Ghana, Sudan, Ethiopia,
Kenya and Tanzania (Bou‹ek 1988).

Meruana liriomyzae Hym.: Eulophidae
This species was recorded as rare (³10% parasitisation) on bean fly infesting
Crotalaria in Ethiopia (Abate 1991). It is also known from Liriomyza
brassicae in Mauritius, L. sativae in Mauritius and RŽunion, from L. trifolii
in Kenya, Chromatomyia horticola (= Phytomyza atricornis) in Ethiopia
and South Africa, and from unidentified hosts in Australia and Zimbabwe
(Bou‹ek 1988; Abate 1991).

Opius importatus Hym.: Braconidae
This species was first recorded from East Africa as Opius sp. by Greathead
(1975) and later described as O. importatus by Fischer (1971b). In nature, it
is known only from East Africa and only from Ophiomyia phaseoli. When
first taken between November 1967 and April 1968 it attained parasitisation
levels of 3% to 9% (Greathead 1969). However, later samples taken in
Uganda in 1971 contained nearly 50% of O. importatus (Greathead 1975).
The first instar larva was found in the third instar host larva and developed
rapidly once the host pupated. Adults, that are similar in appearance to dark
specimens of Opius phaseoli, emerge about 33 days after the appearance of
the host plant above the soil. O. importatus was inadvertently included in
shipments of Opius phaseoli to Hawaii, where it soon became the dominant
parasitoid of Ophiomyia phaseoli (Greathead 1975).

Opius phaseoli (= O. melanagromyzae) Hym.: Braconidae
O. phaseoli was originally described from the Philippines (Manila) without
a host by Ashmead (1904) as Eurytenes nanus. However, as this name was
preoccupied, it was redescribed as O. phaseoli by Fischer (1963), who listed

4.13

Ophiomyia phaseoli

253

its host as Ophiomyia phaseoli and its distribution as India (Nagpur) and the
Philippines. Later, Fischer (1966) listed it as a parasitoid of the leaf miner
Melanagromyza atomella in India and Singh (1982) from Melanagromyza
sojae. Both Singh (1982) and Ipe (1987), working in the area of Agra,
considered it to be important in regulating bean fly populations there. No
information is available on its presence or effectiveness elsewhere in Asia or
Southeast Asia, except for the original record of a single female wasp from
Manila (Ashmead 1904).
In East Africa, Greathead (1969, 1975) reported parasitisation levels of
Ophiomyia phaseoli by Opius phaseoli that were frequently above 50%, and
sometimes reached 94.4%. Levels of up to 10% on Ophiomyia spencerella
were also recorded and Opius phaseoli was twice reared from Ophiomyia
centrosematis. He concluded that Opius phaseoli was the chief biotic factor
limiting the population of bean fly in East Africa. Nevertheless, he reported
levels of only 38% parasitisation from 3 bean fly samples taken in
Madagascar and only about 20% in Mauritius. He suggested that the latter
result might be due to a different strain of the parasitoid or, perhaps, even a
different species. In Ethiopia Abate (1991) reported over 93% parasitisation
of bean fly on French bean, but much lower levels (average 5.6%) on a wild
host Crotalaria.
One to five (but generally two or three) eggs are laid at a time, usually in
first instar host larvae. Hatching occurs about 2 days later, soon after the host
larva has moulted to the second instar. The first instar parasitoid larva grows,
but does not moult until its host has pupated. Meanwhile, all except one
Opius larva are suppressed. Development is rapid in the host pupa, the entire
larval period lasting 9 to 10 days, leading to a prepupal period of 1 to 2 days
and a pupal period (within the host puparium) of about 3 days (Raros 1975).
In East Africa, the pupal period lasts a minimum of 4 days and adults
commence emerging about 30 days after the appearance of the host plant
above the ground (Greathead 1969). On average, males live 20 and females
23 days. Females mate a day after emergence and, following a
preoviposition period of 1 to 2 days, may lay up to 358 eggs throughout life.
First instar host larvae are preferred to second instar larvae (62.9:32.8)
(Raros 1975). Other host stages are not attacked. Adult parasitoids feed on
water droplets and host plant sap resulting from oviposition punctures made
either by host adults or by female parasitoids. The male:female sex ratio was
about 1:1.4 in Hawaii (Raros 1975).

254

Biological Control of Insect Pests: Southeast Asian Prospects

Oxyharma (= Pterosema) subaenea Hym.: Pteromalidae
Plutarchia indefensa Hym.: Eurytomidae
This wasp was referred to by Burikam (1978) and Burikam and Napompeth
(1979) as Plutarchia sp. Eggs are laid in third instar larvae of Ophiomyia
phaseoli, usually at the posterior end. One or two eggs are laid per host and,
on hatching after 2 to 3 days, one surviving larva remains in the first instar
until the host has pupated. The larval stage lasts 5 to 7 days and the pupal
stage (inside the host puparium) 7 to 8 days, giving a development period
from egg to adult of 16 to 19 days. Adult males lived 4 to 19 days (average
11.5) and females 10 to 25 days (average 16.9), during which 6 to 14 eggs
developed per day (Burikam 1978).

Pteromalid Hym.: Pteromalidae
The unidentified pteromalid recorded from Thailand (Burikam 1978;
Burikam and Napompeth 1979; Napompeth 1994) was found parasitising
pupae of O. phaseoli. The female laid 1 or 2 eggs in the host puparium. These
hatched in 2 days and, after 4 days larval development, pupation occurred
within the host puparium. The pupal stage lasted 7 to 8 days, resulting in a
life cycle of 12 to 14 days. Female wasps lived more than 2 weeks (Burikam
1978).

Sphegigaster brunneicornis Hym.: Pteromalidae
This species has been reported from Ethiopia (Abate 1991), India and Sri
Lanka (Peter and Balasubramanian 1984). O. phaseoli is its only recorded
host.

Sphegigaster (= Trigonogastra) rugosa Hym.: Pteromalidae
Sphegigaster (= Paratrigonogastra) stella Hym.: Pteromalidae
Sphegigaster stepicola Hym.: Pteromalidae
This species is known from Ophiomyia phaseoli in Ethiopia (Abate 1991)
and from Phytomyza albiceps in southern Europe and India (Abate 1991).
Combined parasitisation with S. brunneicornis of bean fly on Crotalaria in
Ethiopia ranged from 3.1% to 44.4% (average 26.2%), of which S. stepicola
accounted for nearly 72% (Abate 1991).

Sphegigaster voltairei (= Sphegigaster agromyzae
= Trigonogastra agromyzae) Hym.: Pteromalidae
This species is recorded from Australia, Papua New Guinea, Egypt and
especially Indonesia where Goot (1930) reported that, on average, it
comprised 60% of emergences from parasitised puparia and that it could be
kept alive from 30 to 48 days. It was also the most important parasitoid of
Melanagromyza sojae and was bred several times from M. dolichostigma.

Syntomopus (= Merismorella) shakespearei Hym.: Pteromalidae

4.13

Ophiomyia phaseoli

255

Comment
Although O. phaseoli occurs in Africa, it now seems unlikely that it evolved
there. It was reported in Uganda as recently as the 1920s, in Tanzania in
1937 and in Kenya in 1939. In East Africa, it occurs in close association with
the very similar O. spencerella, which is generally the dominant species
(Greathead 1969). Spencer (1973) postulated that O. spencerella evolved in
Africa and O. phaseoli in Asia. The latter subsequently arrived in Africa to
occupy a similar niche in much the same host plants, but isolated
reproductively from O. spencerella. It is interesting that the major natural
enemy of Ophiomyia phaseoli in East Africa is the braconid Opius phaseoli,
which also occurs in India, whereas that of Ophiomyia spencerella is a
cynipid Eucoilidea sp.. Although Eucoilidea sp. is not restricted to
Ophiomyia spencerella, this species nevertheless does not attack Ophiomyia
phaseoli.
In spite of Asia (and probably India) being nominated as the probable
centre of origin of Ophiomyia phaseoli, it is interesting that bean fly is even
more heavily parasitised in East Africa and Ethiopia than anywhere else Ñ
and by 2 braconid parasitoids, one of which is native to the latter regions.
These are Opius phaseoli and O. importatus. Opius phaseoli was described
from a single female from Manila, but the absence of records of it attacking
Ophiomyia phaseoli there or elsewhere in Southeast Asia raises doubts that
it is native to Southeast Asia.
The rapid control of Ophiomyia phaseoli in Hawaii following the
introduction of Opius phaseoli and O. importatus (the latter soon becoming
the dominant species) demonstrates that, under favourable circumstances,
biological control alone can produce valuable results. It seems probable that
this success would be repeated, at least in other Pacific island nations.
In the far more complex ecological environment in Southeast Asia
extrapolation from experience in Hawaii is more risky. It is probable that the
other components of integrated pest management (varietal resistance,
cultural methods, rational pesticide use, etc.) will all be required to
supplement the reduction in bean fly density that can be brought about by
parasitoids. Nevertheless, any substantial decrease in bean fly populations
that can be achieved by introducing additional effective parasitoids is likely
to be a valuable contribution towards reduced crop losses.

Table 14
Table 14 shows for weeds what Table 4 did for
invertebrates in relation to the top 10 entries.
Since no information was available on the
relative rating for the five weeds nominated by
Tokelau (shown by an asterisk), each was

70

D.F. Waterhouse

allocated the median value of 5. The ranking
order is only given for species that attain an
aggregated value of 10 or more. These are
arranged in descending order of importance in
Table 15.

The Major Invertebrate Pests and Weeds of Agriculture and Plantation Forestry in the Southern and Western Pacific

Table 14

The relative importance given to the top 10 weeds of agriculture (72 species) of each country in the southern and western Pacific .

Name
Acacia farnesiana
Acacia nilotica
Achyranthes aspera
Agave americana
Ageratum conyzoides
Alternanthera sessilis
Amaranthus interruptus
Amaranthus spinosus
Amaranthus viridis
( = A. gracilis)
Antigonon leptopus
Argemone mexicana
( = A. americana)
Bidens alba, Bidens
pilosa
Blechum pyrimidatum
( = B. brownei)
Brachiaria mutica
Brachiaria reptans
Brachiaria
subquadripara
Broussonetia papyrifera
Canavalia rosea
Cardiospermum
halicacabum
Cassytha filiformis
Cecropia peltata
Cenchrus echinatus
Chamaesyce
( = Euphorbia) hirta
Chloris barbata

Family

CoI

Fij FrP FSM Gua Kir Mar NCa Niu PNG

Mimosaceae
Mimosaceae
Amaranthaceae
Agavaceae
Asteraceae
Amaranthaceae
Amaranthaceae
Amaranthaceae
Amaranthaceae
Polygonaceae
Papaveraceae
7

9

3

Lauraceae
Euphorbiaceae
Poaceae
Euphorbiaceae
Poaceae

7

2

1

9

1

9

6

29

1

3

1

3

1
1
1

7
1
9

3
1
3
3

18
6
21
7

1

9

8

4
10
2
2

6

5
3
10

10

Rating

1

8

7

No. *

4

8

Acanthaceae

Urticaceae
Fabaceae
Sapindaceae

W.F.

2

Asteraceae

Poaceae
Poaceae
Poaceae

ASa WSa SoI Tok Ton Tuv Van

*
*

3

Order

6=

13
12
45=

71

72

Table 14 (cont’d) The relative importance given to the top 10 weeds of agriculture (72 species) of each country in the southern and western Pacific .

D.F. Waterhouse

Name

Family

Chromolaena odorata

Asteraceae

Clerodendrum chinense
( = C. philippinum)
Clidemia hirta
Coccinia grandis
Commelina
benghalensis
Commelina diffusa
Cordia subcordata
Crassocephalum
crepidoides
Crotolaria pallida
Crotolaria retusa
Cuphea carthagenensis
Cynodon dactylon
Cyperus rotundus
Dactyloctenium
aegyptium
Desmodium incanum
Digitaria ciliaris
Digitaria eriantha
( = D. decumbens)
Digitaria insularis
Digitaria setigera
Echinochloa colona
Echinochloa crus-galli
Eichhornia crassipes
Eleocharis geniculata
Elephantopus mollis
( = E. scaber)
Eleusine indica
Eleutheranthera ruderalis

Verbenaceae

CoI

Fij FrP FSM Gua Kir Mar NCa Niu PNG
3

Fabaceae
Fabaceae
Lythraceae
Poaceae
Cyperaceae
Poaceae

W.F.

7

2

3

Melastomataceae
Cucurbitaceae
Commelinaceae
Commelinaceae
Boraginaceae
Asteraceae

ASa WSa SoI Tok Ton Tuv Van

1
4

5

5
2
9

6
10

7

6

8

7

1

1

5

4

1

1

1

9

1

No. *

Rating

Order

2

12

21=

3

27

9

2
1
1

13
6
9

20

2

7

1

1

13

98

1

1

1
4

5
26

10

2

10

26=

7

21

11

1

Fabaceae
Poaceae
Poaceae
Poaceae
Poaceae
Poaceae
Poaceae
Pontederiaceae
Cyperaceae
Asteraceae
Poaceae
Asteraceae

10

6
7

1

2

9

8

3
8

9

6

10

*

10

7

The Major Invertebrate Pests and Weeds of Agriculture and Plantation Forestry in the Southern and Western Pacific

Table 14 (cont’d) The relative importance given to the top 10 weeds of agriculture (72 species) of each country in the southern and western Pacific .
Name

Family

73

Emilia sonchifolia
Eragrostis tenella
Euphorbia heterophylla
( = E. geniculata)
Fimbristylis cymosa
( = F. atollensis)
Fimbristylis dichotoma
Fimbristylis miliacea
Guettarda speciosa

Asteraceae

Hydrilla verticillata
Hyptis pectinata
Imperata conferta
( = I. cylindrica)
Indigofera suffruticosa
Ipomoea macrantha

Hydrocharitaceae
Lamiaceae
Poaceae

Ischaemum spp.
Jatropha gossypifolia
Kyllinga brevifolia
Kyllinga nemoralis
Kyllinga polyphylla

Poaceae
Euphorbiaceae
Cyperaceae
Cyperaceae
Cyperaceae

Lantana camara
Leucaena leucocephala
Ludwigia octovalvis
( = Jussiaea suffruticosa)
Macroptilium lathyroides

Verbenaceae
Mimosaceae
Onagraceae

Melaleuca
quinquenervia
Merremia peltata

Myrtaceae

Miconia calvescens

Melastomataceae

Mikania micrantha
Mimosa invisa

Asteraceae
Mimosaceae

CoI

Fij FrP FSM Gua Kir Mar NCa Niu PNG

Poaceae
Euphorbiaceae

ASa WSa SoI Tok Ton Tuv Van

8

Cyperaceae

7

Cyperaceae
Cyperaceae
Cyperaceae

4

*
3
10

Fabaceae
Convolvulaceae

*

5

10

3
8

9
6
2

6

7

1

6
10

8
5

3
2

W.F.

No. *

Rating

Order

1

3

1

4

2

12

1
1

8
1

2

11

1

1

2

10

26 =

7
3
2

40
13
15

4
19
15 =

2

11

23 =

1

10

28 =

10
10

49
73

3
2

21=

23 =

Fabaceae

Convolvulaceae

1

10

1
6
1

9
1

4
3

4

8
7

6
4

2
3

6
7

7
5

8

5
2

74

Table 14 (cont’d) The relative importance given to the top 10 weeds of agriculture (72 species) of each country in the southern and western Pacific .

D.F. Waterhouse

Name
Mimosa pigra
Mimosa pudica
Miscanthus floridulus
Momordica charantia
Monochoria hastata
Nephrolepis hirsutula
Ocimum gratissimum
Oxalis corniculata
Panicum maximum
Parthenium
hysterophorus
Paspalum conjugatum
Paspalum dilatatum
Paspalum paniculatum
Paspalum vaginatum
Passiflora foetida
Passiflora maliformis
Pennisetum polystachion
Pennisetum purpureum
Phyllanthus amarus
Physalis angulata
Pistia stratiotes
Pluchea indica
Portulaca oleracea
Premna obtusifolia
( = P. serratifolia)
Pseudelephantopus
spicatus
Psidium guajava
Ricinus communis

Family

CoI

Fij FrP FSM Gua Kir Mar NCa Niu PNG

Mimosaceae

W.F.

3

Mimosaceae
Poaceae
Cucurbitaceae
Pontederiaceae
Davalliaceae
Lamiaceae
Oxalidaceae
Poaceae
Asteraceae
Poaceae
Poaceae
Poaceae
Poaceae
Passifloraceae
Passifloraceae
Poaceae
Poaceae
Euphorbiaceae
Solanaceae
Araceae
Asteraceae
Portulacaceae
Verbenaceae

ASa WSa SoI Tok Ton Tuv Van

5

6

4

6

9

2

5
3
7
5

8

5

2
2

5

3
1

No. *

Rating

1

8

6

40

1

6

1
1

5
4

2

9

1

6

1
1

9
9

2
1

14
10

1
1

8
5

Asteraceae
Myrtaceae
Euphorbiaceae

3
6

Order
5

18
28 =

The Major Invertebrate Pests and Weeds of Agriculture and Plantation Forestry in the Southern and Western Pacific

Table 14 (cont’d) The relative importance given to the top 10 weeds of agriculture (72 species) of each country in the southern and western Pacific .
Name

75

Rottboellia
cochinchinensis
Ruellia prostrata
Salvinia molesta
Scaveola sericea
( = S. taccada)
Schinus terebinthifolius
Senna ( = Cassia)
occidentalis
Senna ( = Cassia) tora
Sida acuta
Sida cordifolia
Sida fallax
Sida rhombifolia
Solanum americanum
( = S. nigrum)
Solanum mauritianum
Solanum torvum
Sonchus oleraceus
Sorghum arundinaceum
( = S. verticilliflorum)
Sorghum halepense
Sorghum sudanense
Spathodea
companulata
Sphaerostaphanos
invisus
Sphaerostephanos
unitus
Stachytarpheta
cayennensis
Stachytarpheta
jamaicensis

Family

CoI

Poaceae

Fij FrP FSM Gua Kir Mar NCa Niu PNG
5

ASa WSa SoI Tok Ton Tuv Van

W.F.

2

Acanthaceae
Salviniaceae
Goodeniaceae

7

4

No. *

Rating

Order

2

15

15 =

2

11

23 =

2
4

8
14

17

1
3

3
9

4

27

1

7

3
1
1

16
1
7

2

6

Anacardiaceae
Caesalpinaceae
Caesalpinaceae
Malvaceae
Malvaceae
Malvaceae
Malvaceae
Solanaceae
Solanaceae
Solanaceae
Asteraceae
Poaceae
Poaceae
Poaceae
Bignoniaceae

8
9

9

8

6
4

8
8

9

7

2

9

5

1

4
9

4
10

4

4

Thelypteridaceae
Thelypteridaceae
Verbenaceae
Verbenaceae

10

6

8

14

76

Table 14 (cont’d) The relative importance given to the top 10 weeds of agriculture (72 species) of each country in the southern and western Pacific .

D.F. Waterhouse

Name
Stachytarpheta urticifolia
Stictocardia tiliifolia
Syndrella nodiflora
Tecoma stans
Themeda quadrivalis
Tournefortia
( = Messerschmidia)
argentea
Tribulus cistoides
Tridax procumbens
Triumfetta rhomboidea
Urena lobata
Vernonia cinerea
Vigna marina
Vitex trifolia
Wedelia trilobata
Xanthium pungens

Family

CoI

Verbenaceae

10

Convolvulaceae
Asteraceae
Bignoniaceae
Poaceae
Boraginaceae

Zygophyllaceae
Asteraceae
Tiliaceae
Malvaceae
Asteraceae
Fabaceae
Verbenaceae
Asteraceae
Asteraceae

Fij FrP FSM Gua Kir Mar NCa Niu PNG
5

ASa WSa SoI Tok Ton Tuv Van
7

10

4
9

9
10

3

W.F.

No. *

Rating

4

12

1

7

1

2

1
1

2
1

1

8

Order
20

287

4.15

Planococcus citri

China

++

India

Taiwan

++

Myanmar
P
Laos
20°

20°

P
Philippines

Thailand

+

Cambodia
Vietnam

+++

+

+

Brunei

Malaysia




Singapore

Papua
New Guinea

+

Indonesia

+

20°

Australia

20°

It is speculated that the citrus mealybug Planococcus citri is of south China origin,
although it now occurs very widely in tropical, subtropical and temperate regions wherever
citrus is grown. Like other mealybugs, it is attacked by a large number of non-specific
predators, especially Coccinellidae, but also Chrysopidae. These consume vast numbers
of prey when mealybugs are abundant, but often do not reduce host numbers to a level at
which economic injury no longer occurs. There are several specific or near specific encyrtid
parasitoids that are capable of lowering P. citri populations below the economic threshold.
These are worth serious consideration for introduction to regions where they do not already
occur: Leptomastix dactylopii (of Brazilian origin), Leptomastidea abnormis and Anagyrus
pseudococci (of Mediterranean origin) and Coccidoxenoides peregrinus (of south China or
Indian origin). In some situations (particularly cooler conditions) augmentative releases
are necessary if the use of insecticides is to be avoided.

288

Biological Control of Insect Pests: Southeast Asian Prospects

Planococcus citri (Risso)
Hemiptera, Pseudococcidae
citrus mealybug
This account draws heavily on that of Bartlett (1978) and CABI abstracts
since then.

Rating
.
Southeast Asia
7

+++
++
+
P

China

Southern and Western Pacific

Viet
++
Thai, Msia, Brun,
Indo
Myan, Phil

4
+
P

Cook Is, PNG, Tong,
Sam
Fr P, Niue

Origin
P. citri was described from citrus in southern France (Risso 1813), but
Bartlett (1978) speculates that it is of Chinese origin. However, the fact that
it is a widespread and important pest of citrus in 11 of the 14 provinces of
southern China casts some doubt on this view (Li Li-ying et al. 1997).

Distribution
The citrus mealybug is extremely widespread, being present in almost all
tropical, subtropical and temperate regions of the world and in many
glasshouses in cooler parts. Other species of Planococcus have often been
confused with it, including P. pacificus (which does not occur in the
Mediterranean but is common in the Pacific: Cox 1981, 1989), P. ficus
(restricted to fig, pomegranate and grape in the Mediterranean: Tranfaglia
1979; Cox and Freeston 1985; Cox and Ben-Dov 1986) and P. kenyae (on
Coffea in Kenya: Le Pelley 1943a,b). However, their hymenopterous
parasitoids discriminate between P. citri and P. kenyae and biological
control fails when the incorrect parasites are used (Rosen and De Bach
1977). The collection data of Pacific specimens suggest that P. citri is a
recent introduction there (Williams 1982). There may well be different
strains of P. citri. For example, in Brazil it is rarely found on citrus, but is
common on other plants (Compere 1939); and in South Africa it is common
on citrus, but seldom found on grape vines (De Lotto 1975).

4.15

Planococcus citri

289

Biology
P. citri shows considerable morphological variation when reared under
different environmental conditions. Small specimens, produced by rearing
at high temperatures (32¡C), have smaller appendages and lower numbers of
cuticular structures than those reared between 17¡ and 25¡C (Cox 1981).
Adult females are oval, flat and yellow to yellowish brown, with a barely
visible dorsal line under their waxy covering. Along the edge of the wax
cover there are short waxy protruberances, the longest of which are at the
posterior end. Yellow eggs are deposited in an ovisac of wax threads and
young nymphs are lemon-yellow in colour. Females are oviparous, and
possibly parthenogenetic when males are not available.
The development time varies from 20 to 40 days, depending upon the
host plant and temperature. The pre-oviposition period is 7 to 10 days, eggs
hatch in 3 to 6 days and, 300 to 500 eggs are laid per female. Additional
details of developmental periods on coffee and potato sprouts are provided
by Bartlett and Lloyd (1958) and Martinez and Suris (1987a, b). Eggs,
nymphs and adults are capable of overwintering. There are 3 instars for
female nymphs and 2 for male nymphs which then form a waxy puparium. In
warm areas there are normally 4 or 5 overlapping generations per year
(Bartlett 1978; Kalshoven 1981), but about double this number under
laboratory conditions (Gray 1954).
P. citri can be readily reared in the laboratory on potato sprouts (Fisher
1963; Martinez and Suris 1987b), lemons and butternut pumpkins
(Samways and Mapp 1983) and a crawler-proof cage has been described
(Rao 1989). Dispersal of crawlers is brought about by wind, rain and ants.
Until mated, females secrete a pheromone continously to attract males:
(1R-cis) (3-isopropenyl-2-2-dimethylcyclobutyl) methyl acetate (Dunkelblum et al. 1986). Synthetic analogues have been tested to reduce
populations (Rotundo and Tremblay 1974, 1980, 1982; Rotundo et al. 1979).

Host plants
P. citri has an extremely wide host range, attacking almost every flowering
plant and some grasses as well. It is most frequently reported from citrus, and
occurs commonly on other fruit trees and grape vines. Other important crops
include banana, tobacco, coffee, fig, mango, cocoa, date, casssava,
macadamia, passionfruit and cut flowers.

290

Biological Control of Insect Pests: Southeast Asian Prospects

Damage
The citrus mealybug is a widespread and severe pest of citrus; also, in
temperate areas, of grape vines and, in tropical areas, of coffee and mango.
P. citri is the most injurious of 6 species of mealybug in the Mediterranean
basin, the damage caused, especially to fruit, being so severe in France that
the economic threshold is 2% infestation (Panis 1979). In glasshouses its
hosts include bulbs, ferns, gardenias and other ornamentals. It is generally
found on the aerial parts of plants, although a root form occurs. Tender
growing tips, flower buds and young fruit clusters are favoured aggregating
points. Excessive removal of sap by large numbers of mealybugs leads to
wilting and death of shoots and flower buds and to drop of fruit.
Furthermore, there is abundant growth of sooty moulds on the large amounts
of honeydew produced, which may render produce unmarketable. P. citri
becomes most abundant during the dry season.
P. citri has been incriminated in the transmission of viruses of grape
vines, cocoa, cucumber, taro and tobacco (Carpenter et al. 1976; Kenten and
Woods 1976; Bartlett 1978; Legg and Lockwood 1981; Dufour 1988; Agran
et al. 1990; Pedroso et al. 1991).

Natural enemies
The citrus mealybug, like other mealybugs, is attacked by a wide range of
naturally occurring predators, particularly coccinellid beetles and lacewings
(Table 4.15.1). Many of these have a wide to very wide host range and thus
are less likely nowadays than in the past to be regarded as suitable to
introduce to new environments. Nevertheless, those reported in recent
literature are recorded, but no attempt has been made to provide an
exhaustive list.
The coccinellid predator Cryplolaemus mountrouzieri in particular has
been very extensively distributed in the past, often with moderate to good
success, against a variety of mealybug, scale and aphid pests, including
P. citri. C. montrouzieri and some of the other predators play an important
role in greatly reducing the abundance of high populations. In general,
however, their searching ability is poor and prey are missed when population
densities fall, so their action must generally be supplemented by parasitoids
or other means for effective control.

Table 4.15.1

Predators of Planococcus citri

Species
HEMIPTERA
ANTHOCORIDAE
Orius minutus

Country

Reference

Turkey

Soylu & Urel 1977

India
Australia
USA
India
Israel
USSR
India
India
India

Krishnamoorthy 1984
Murray 1978
Meyerdirk et al. 1982
Krishnamoorthy & Mani 1989b
Berlinger et al. 1979
Niyazov 1969
Krishnamoorthy & Mani 1989b
Krishnamoorthy & Mani 1989b
Mani & Krishnamoorthy 1990

Australia
USA
Turkey

Murray 1978, 1982
Dean et al. 1971; Meyerdirk et al. 1979, 1982
Soylu & Urel 1977

China
Indonesia

Weng & Huang 1988
Kalshoven 1981

NEUROPTERA
CHRYSOPIDAE
Brinckochrysa (=Chrysopa) scelestes
Chrysopa sp.
Chrysoperla carnea

COCCINELLIDAE
Brumoides lineatus
Brumus suturalis

Planococcus citri

COLEOPTERA

4.15

Mallada (= Anisochrysa) basalis
Mallada boninensis
Odontochrysa (=Chrysopa =Plesiochrysa)
lacciperda
Oligochrysa lutea
Sympherobius barberi
Sympherobius sanctus

291

Species
COLEOPTERA

292

Table 4.15.1 (contÕd) Predators of Planococcus citri
Reference

Diomus pumilio
Exochomus flavipes
Exochomus flaviventris
Harmonia octomaculata
Hyperaspis lateralis
Hyperaspis polita
Hyperaspis 2 ´ spp.

Israel
Turkey
California
Indonesia
USSR
USA
Papua New Guinea
Easter Is
India
Mediterranean
Australia
South Africa
Mediterranean
Australia
California
Turkey
USSR

Nephus (= Scymnus) bipunctatus
Nephus (= Scymnus) reunioni
Pullus pallidicollis
Scymnus (= Nephus) includens
Scymnus apetzi
Scymnus apiciflavus
Scymnus biguttatus

USSR
East Africa
India
Italy
USSR
Indonesia
USSR

Berlinger et al. 1979
Soylu & Urel 1977
Bartlett & Lloyd 1958
Kalshoven 1981
Niyazov 1969
Meyerdirk et al. 1979, 1982
Szent-Ivany 1963
Ripa et al. 1995
Chacko et al. 1978
Panis 1977
Meyerdirk 1983
Samways 1983
Kanika et al. 1993
Murray 1978
Bartlett & Lloyd 1958
Soylu & Urel 1977
Niyazov 1969
Bennett & Hughes 1959
Niyazov 1969
Ershova & Orlinskii 1982
Prakasan 1987
Tranfaglia & Viggiani 1973
Niyazov 1969
Kalshoven 1981
Niyazov 1969

COCCINELLIDAE (contÕd)
Chilocorus bipustulatus
Coccinella californica
Coccinella transversalis (= C. repanda)
Coccinella semipunctata
Cryptolaemus affinis
Cryptolaemus montrouzieri

Biological Control of Insect Pests: Southeast Asian Prospects

Country

Table 4.15.1 (contÕd) Predators of Planococcus citri
Species
COLEOPTERA

Country

Reference

Scymnus roepkei
Scymnus sordidus

South Africa
South Africa
Turkey
Indonesia
California

Scymnus subvillosus

USSR

Smith 1923
Samways 1983
Soylu & Urel 1977
Kalshoven 1981
Bartlett & Lloyd 1958;
Bennett & Hughes 1959
Niyazov 1969

Indonesia
Japan
India
India

Kalshoven 1981
Yukawa 1978
Chacko et al. 1977
Prakasan 1987

USSR
Italy
California
Italy

Niyazov 1969
Raspi & Bertolini 1993
Bartlett & Lloyd 1958
Raspi & Bertolini 1993

India

Chacko et al. 1977

Australia

Murray 1982

COCCINELLIDAE (contÕd)
Scymnus binaevatus
Scymnus spp.

DIPTERA

Planococcus citri

Leucopis bella
Leucopis silesiaca
CRYPTOCHETIDAE
Cryptochetum sp.
SYRPHIDAE
Syrphus sp.

4.15

CECIDOMYIIDAE
Coccidodiplosis smithi
Diadiplosis hirticornis
Dicrodiplosis sp.
Triommata coccidivora
CHAMAEMYIIDAE
Leucopis alticeps

293

Species
LEPIDOPTERA
LYCAENIDAE
Spalgis epius

294

Table 4.15.1 (contÕd) Predators of Planococcus citri
Reference

India

Chacko et al. 1977;
Mani & Krishnamoorthy 1990

Turkey
Spain
India
Indonesia
Italy
Turkey
USA
USSR
USA
India
California
USA

Soylu & Urel 1977
Carrero 1980a
Varma 1977
Kalshoven 1981
Viggiani 1975a
Soylu & Urel 1977
Meyerdirk et al. 1982
Niyazov 1969
Meyerdirk et al. 1982
Chacko et al. 1977
Bennett & Hughes 1959
Bartlett & Lloyd 1958;
Summy et al. 1986
Niyazov 1969
Bartlett 1978
Krishnamoorthy & Mani 1989a; Mani 1994
Viggiani & Maresca 1973
Meyerdirk et al. 1978, 1979, 1982

HYMENOPTERA
ENCYRTIDAE
Achrysophagus sp.
Anagyrus bohemani
Anagyrus greeni
Anagyrus pseudococci

Anagyrus sp. nr sawadai
Blepyrus insularis
Blepyrus saccharicola
Chrysoplatycerus splendens
Clausenia josefi
Coccidoxenoides (= Pauridia) peregrinus

Mediterranean
China
India
Italy
USA

Biological Control of Insect Pests: Southeast Asian Prospects

Country

Table 4.15.1 (contÕd) Predators of Planococcus citri
Species
HYMENOPTERA
ENCYRTIDAE (contÕd)
Leptomastidea abnormis

Leptomastix dactylopii

Spain
Turkey
USA
Brazil
India
USA
India
India

USA
South Africa

Carrero 1980a
Soylu & Urel 1977
Meyerdirk et al. 1979, 1982
Mani 1995
Mani 1995
Meyerdirk et al. 1978, 1979, 1982
Prakasan & Kumar 1985
Kalshoven 1981
Bartlett & Lloyd 1958
Bartlett & Lloyd 1958
Sinadskii & Kozarzhevskaya 1980
Bennett & Hughes 1959
Meyerdirk et al. 1982
Prinsloo 1982

China
South Africa
USSR

Bartlett & Lloyd 1958
Annecke & Prinsloo 1977
Niyazov 1969

California
USSR

Planococcus citri

Reference

4.15

Leptomastix nigrocoxalis
Leptomastix trilongifasciatus
Ophelosia crawfordi
Pseudaphycus angelicus
Pseudaphycus maculipennis
Pseudaphycus perdignus
Sympherobius barberi
Timberlakia gilva
PLATYGASTERIDAE
Allotropa citri
Allotropa kamburovi
Allotropa mecrida

Country

295

296

Biological Control of Insect Pests: Southeast Asian Prospects

The citrus mealybug is also attacked in most regions by encyrtid and
sometimes by platygasterid parasitoids (Table 4.15.2), several of which are
capable of having a significant effect in warm climates. If the origin of
P. citri is really China, it is surprising that there are not reports of a number
of specific or near specific parasitoids from that region. Indeed the species
most commonly employed for biological control is Leptomastix dactylopii
which is believed to be native to Brazil.
A few fungi attack P. citri under humid conditions (Table 4.15.3).

Attempts at biological control
Any account of the biological control of P. citri is complicated by the facts that
(i) it has been confused with other species on a number of occasions, so that
early records are often unreliable, (ii) documentation of some introductions is
poor or lacking, and (iii) natural enemies (that also attack it) have often been
introduced in programs aimed at other mealybugs. Table 4.15.4 summarises
the main introductions for biological control of P. citri.
CALIFORNIA
It is convenient to outline, first, the prolonged attempts against P. citri in
California, since programs elsewhere almost always draw extensively on
experience there. Furthermore, since the first introduction of Cryptolaemus
montrouzieri from Australia to California in 1891Ð92, there have been few
parasites or predators used in the control of any economically important
mealybug anywhere in the world that have not also been tested against
P. citri in California, in the hope that they might attack it also (Bartlett
1978).
C. montrouzieri was mass reared and released in California against
P. citri with some success, but repeated releases were required to achieve
satisfactory control. Another coccinellid Nephus (= Scymnus) bipunctatus
(under the name of Cryptogonus orbiculus) was introduced in 1910 from the
Philippines, but did not become established (Bartlett 1978). However,
establishment followed the introduction from Sicily in 1914 of the parasitoid
Leptomastidea abnormis, although control was only partly successful
(Viereck 1915; Smith 1917). The coccinellid Scymnus binaevatus from
South Africa was established in 1921, but persists only in small numbers.
Unsuccessful attempts were made to establish the encyrtid
Coccidoxenoides peregrinus from Hawaii where it was having a major
impact on P. citri, misidentified at the time as Planococcus kraunhiae.
However, progeny of a single female from South China in 1950 allowed the
species to become established, although at a low level (Flanders 1957).

Table 4.15.2

Parasitoids of Planococcus citri

Species
HYMENOPTERA
ENCYRTIDAE
Achrysophagus sp.
Anagyrus bohemani
Anagyrus greeni
Anagyrus pseudococci

Leptomastidea abnormis

Leptomastix dactylopii

Soylu & Urel 1977
Carrero 1980a
Varma 1977
Kalshoven 1981
Viggiani 1975a
Soylu & Urel 1977
Meyerdirk et al. 1982
Niyazov 1969
Meyerdirk et al. 1982
Chacko et al. 1977
Bennett & Hughes 1959
Bartlett & Lloyd 1958;
Summy et al. 1986
Niyazov 1969
Bartlett 1978
Krishnamoorthy & Mani 1989a; Mani 1994
Viggiani & Maresca 1973
Meyerdirk et al. 1978, 1979, 1982
Carrero 1980a
Soylu & Urel 1977
Meyerdirk et al. 1979, 1982
Mani 1995
Mani 1995
Meyerdirk et al. 1978, 1979, 1982
Prakasan & Kumar 1985

Mediterranean
China
India
Italy
USA
Spain
Turkey
USA
Brazil
India
USA
India

297

Leptomastix nigrocoxalis

Turkey
Spain
India
Indonesia
Italy
Turkey
USA
USSR
USA
India
California
USA

Planococcus citri

Clausenia josefi
Coccidoxenoides (= Pauridia) peregrinus

Reference

4.15

Anagyrus sp. nr sawadai
Blepyrus insularis
Blepyrus saccharicola
Chrysoplatycerus splendens

Country

Species
HYMENOPTERA

Table 4.15.3

Country

Reference

India

USA
South Africa

Kalshoven 1981
Bartlett & Lloyd 1958
Bartlett & Lloyd 1958
Sinadskii & Kozarzhevskaya 1980
Bennett & Hughes 1959
Meyerdirk et al. 1982
Prinsloo 1982

China
South Africa
USSR

Bartlett & Lloyd 1958
Annecke & Prinsloo 1977
Niyazov 1969

California
USSR

Pathogens attacking Planococcus citri

Species

Country

Reference

Aspergillus flavus
Cladosporium oxysporum
Entomophthora fresenii
Entomophthora fumosa
Fusarium sp.

Cuba
South Africa
Indonesia
Australia
Easter Is

Martinez & Bravo 1989
Samways 1983; Samways & Grech 1986
Kalshoven 1981
Murray 1978; Samal et al. 1978
Ripa et al. 1995

Biological Control of Insect Pests: Southeast Asian Prospects

ENCYRTIDAE (contÕd)
Leptomastix trilongifasciatus
Ophelosia crawfordi
Pseudaphycus angelicus
Pseudaphycus maculipennis
Pseudaphycus perdignus
Sympherobius barberi
Timberlakia gilva
PLATYGASTERIDAE
Allotropa citri
Allotropa kamburovi
Allotropa mecrida

298

Table 4.15.2 (contÕd) Parasitoids of Planococcus citri

4.15

Planococcus citri

299

The encyrtid Leptomastix dactylopii, introduced in 1934 from Brazil,
was mass reared and released. Recoveries were made over a number of years
following each spring or summer release, but not following the ensuing
winter. Eventually, a few managed to overwinter, resulting in a low level
population (Compere 1939).
The South China platygasterid, Allotropa citri, introduced in 1950,
attacked 1st and 2nd instar P. citri, but mass releases over some 6 years
resulted in few field recoveries and it is not thought to be established
(Bartlett 1978).
A somewhat polyphagous encyrtid, Anagyrus pseudococci, was
unsuccessfully introduced from Brazil in 1934 and 1953. The same or a
similar species, Anagyrus sp. nr pseudococci, was brought in from Italy in
1955, but was established only briefly (Bartlett 1978).
The coccinellid Exochomus metallicus from Eritrea was established
from introductions in 1954 against citricola scale (Coccus pseudomagnoliarum) and black scales and attacks P. citri on plants other than citrus
(Bartlett 1978).
In spite of this series of introductions, the natural enemies of P. citri in
California do not, unaided, maintain populations at sub-economic levels,
mainly because, it is claimed, climatic conditions permit the overwintering
of, at best, inadequate populations. Cryptolaemus montrouzieri has often
provided spectacular control of high populations, but is unable to maintain
its numbers on low prey populations and disappears, requiring
reintroduction. Methods are available for its low cost mass production
(Fisher 1963).
The encyrtid Leptomastidea abnormis is of considerable value in
attacking young mealybugs sheltering under citrus fruit sepals in spring and
autumn, but is adversely affected by high temperatures. Both Leptomastix
dactylopii and Coccidoxenoides peregrinus build up high numbers
following mass releases, but crash over winter and require repeated mass
releases to maintain effectiveness.
AUSTRALIA
P. citri can be an important pest of citrus, but also attacks passionfruit and
custard apple in warmer regions. The earliest attempts at biological control
were in Western Australia, where Cryptolaemus montrouzieri was
introduced from New South Wales in 1902 and an unidentified coccinellid
from Spain in 1903. Only the former was established and it rapidly became
an important factor in the successful control of mealybugs there (Wilson
1960).

300

Biological Control of Insect Pests: Southeast Asian Prospects

Before biological control was attempted in Queensland in 1980, six
natural enemies were recorded, the coccinellids Cryptolaemus montrouzieri,
and Harmonia octomaculata (= Coccinella arcuata) the chrysopids
Chrysopa sp. and Oligochrysa lutea (all 4 native) and the exotic encyrtids
Leptomastidea abnormis and Coccidoxenoides peregrinus. However, they
were unable to maintain infestations consistently at acceptable commercial
levels. Attack by a fungus similar to Entomophthora fumosa caused up to
58.1% mortality of 3rd instar nymphs and adults on passionfruit during wet
periods (Murray 1978, 1982; Smith et al. 1988).
The Brazilian encyrtid Leptomastix dactylopii was imported from
California and approximately 2.5 million adults released between 1980 and
1987. It established readily and became the commonest natural enemy of
P. citri throughout southeast Queensland, reducing mealybug infestations,
averaging 38% of fruit in early December, to an acceptable level of 5% or
less at harvest in April. Parasitoid numbers were lowest during winter and
spring and augmentative releases of 5 to 10 thousand parasitoids per hectare
in spring to early summer advanced parasitoid activity by 6 weeks.
When no releases were made, the parasitoid was first recorded in early
February and was present in an average of 55% of mealybug-infested fruit
by mid-March. The mealybug infestation peaked at an average of 47% in
mid-December but, by late April, only dropped to 10% and the presence of
the mealybug on 25% or more fruit from December to March usually
resulted in excessive amounts of sooty mould. C. montrouzieri was recorded
on a maximum of 5% of mealybug-infested fruit, and augmentative release
failed to increase this level. Augmentative release of L. dactylopii was found
to be at least as cheap as pesticides and far more compatible with IPM of
other citrus pests (Smith et al. 1988).
Placing sticky bands around the trunks of custard apple trees reduced the
numbers of the ant, Pheidole megacephala, and lowered, somewhat, the
numbers of P. citri. Parasitisation of P. citri by Leptomastidea abnormis was
low and unaffected by banding, but there were more predators (especially
Oligochrysa lutea, Cryptolaemus montrouzieri and Syrphus sp.).
Nevertheless, natural enemies were still unable to maintain P. citri at
acceptable levels (Murray 1982).
BERMUDA
Seven species of parasitoid and four predators were introduced between
1951 and 1955, mainly from California, but originating elsewhere:
Coccidoxenoides peregrinus from Hawaii and south China, Leptomastix
dactylopii (South American race) Leptomastidea abnormis, Pseudaphycus
perdignus, Anagyrus pseudococci, Blephyrus saccharicola and Allotropa
citri. Only C. peregrinus, L. dactylopii and L. abnormis were established

4.15

Planococcus citri

301

and, of these, L. dactylopii may have been the local form. Of the predators,
Cryptolaemus montrouzieri was established, but only briefly and two
species of Hyperaspis and Scymnus sordidus failed to breed on P. citri
(Simmonds 1957; Bennett and Hughes 1959).
BRAZIL
P. citri is common on a range of plants, but citrus is seldom infested. In
1939 Leptomastidea abnormis and Leptomastix dactylopii were
commonly reared from it, and it was attacked by numerous predators,
including Hyperaspis c-nigrum, Nephus sp., Diomus sp., lacewings and
cecidomyiids. Anagyrus pseudococci was not recorded, although it was
present in Argentina (Compere 1939).
CHILE
Cryptolaemus montrouzieri was introduced in 1931, 1933 and 1939, but
establishment is not recorded, although it is present on Easter Is (Ripa et al.
1995). Extensive releases of two parasitoids from California resulted in
establishment: Leptomastidea abnormis during 1931Ð36 and Leptomastix
dactylopii in 1936 and 1938: both of these and Coccidoxenoides peregrinus
were also established on Easter Is (Ripa et al. 1995). Attempts failed in 1954
to establish from California: Allotropa citri, Anagyrus pseudococci,
Coccidoxenoides peregrinus and Pseudaphycus perdignus (Duran 1944;
Gonzalez and Rojas 1966).
CHINA
Four species of parasitic wasp were introduced from China to California in
1950: a uniparental species of Coccidoxenoides and a biparental species of
Allotropa from Guangzhou, a biparental species of Pseudaphycus from
Taiwan and a biparental species of Coccophagus from Hong Kong (Flanders
1951).
CUBA
Seven natural enemies attack P. citri on coffee including a Leptomastix sp..
A cecidomyiid predator was commonest (Martinez et al. 1992). A fungus
Aspergillus flavus was also detected (Martinez and Bravo 1989).
CYPRUS
Leptomastix dactylopii was introduced from Italy in 1977 and became
established, attaining a parasitisation rate of 15% in 1979. At harvest there
were far fewer P. citrus on the fruit than in a plot that had received 3
applications of insecticide (Krambias and Kontzonis 1980).
FRANCE
Cryptolaemus montrouzieri was introduced from California in 1918 and
became established, but overwinter survival was low (Marchal 1921, 1922;
Poutiers 1922; Marchal and Pussard 1938). Of the 6 species of mealybug on
citrus in the Mediterranean basin, P. citri is the most injurious. Damage by it
in France is such that an economic injury level of 2% infested fruit has been

302

Biological Control of Insect Pests: Southeast Asian Prospects

set. Mass rearing and release of Leptomastix dactylopii, which requires the
use of fewer mealybugs for laboratory rearing than the coccinellid
C. montruzieri and is cheaper, is preferred to that of the coccinellid if only
one natural enemy is to be used. However, it is preferable to employ both,
with C. moutrouzieri destroying high populations of females and eggs and
L. dactylopii parasitising nymphs, even if populations are scattered (Panis
1977, 1979).
GREECE
Cryptolaemus montrouzieri was liberated against P. citri on potted orange
trees in a glasshouse at 25 to 30¡C and 55 to 70% RH and the results compared with the release of Nephus (= Scymnus) reunioni or the application of
insecticide. C. montrouzieri significantly reduced mealybug populations
and was as effective as treatment with methidathion (Hamid and Michelakis
1994).
INDIA
Leptomastix dactylopii was introduced in 1983 to Bangalore and rapidly
became established on P. citri on mandarins and coffee, causing up to 100%
parasitisation (Nagarkatti et al. 1992). Seven years later in 1991, P. citri was
being attacked on lemon and lime by L. dactylopii and the more abundant
indigenous Coccidoxenoides peregrinus, which was causing 10 to 30%
parasitisation. C. peregrinus attacks preferentially the early and Leptomastix
dactylopii the later instars (Krishnamoorthy and Mani 1989a; Mani 1994).
In 1984 L. dactylopii was released in a lime orchard in Karnataka. Prior to
release, infestation by P. citri ranged from 38 to 65%, but establishment of
the parasitoid led to excellent control within 4 months and no insecticides
were required in following seasons. The parasitoid was shown to have
migrated about 0.5 km in a 2-year period and a mean of 2.3 adult parasitoids
were recovered from each infested fruit in an orange orchard
(Krishnamoorthy 1990). Parasitisation of P. citri and other mealybugs on
coffee ranged, in different years, between 19 and 45% (Reddy et al. 1988)
and 0 and 85% (Reddy et al. 1992). Although L. dactylopii greatly reduced
the population of P. citri, augmentative releases were required for
continuing control in a coffee plantation (Reddy and Bhat 1993).
Native predators of P. citri on coffee include the lycaenid, Spalgis epius,
the coccinellid, Pullus pallidicollis, and the cecidomyiid Triommata
coccidivora (Prakasan 1987). On citrus the chrysopids Mallada boninensis,
Odontochrysa (= Chrysopa) lacciperda, Mallada basalis and Chrysoperla
carnea were found (Krishnamoorthy and Mani 1989b); and on guava
Odontochrysa lacciperda, Spalgis epius and Cryptolaemus montrouzieri
(Mani and Krishnamoorthy 1990).

4.15

Planococcus citri

303

Releases of Cryptolaemus montrouzieri on a coffee estate in Kerala
virtually eliminated P. citri, but the coccinellid could not be found thereafter
for some 6 months, when it reappeared about 10 km distant and virtually
eliminated mealybugs from an infestation (Chacko et al. 1978). The
requirement that each female consume at least 8 P. citri for normal egg
production (192 eggs/female) was suggested as the reason for the poor
establishment of C. montrouzieri when only low populations of P. citri are
available (Reddy et al. 1991).
ISRAEL
The citrus mealybug is a serious pest of citrus and ornamentals of tropical
origin. It develops on the fruit and roots of young trees, the main damage
being caused by individuals settling beneath the sepals of citrus fruit and
injuring the fruit: honeydew produced also attracts fruit-piercing moths
(Mendel et al. 1992).
Two native encyrtids, Anagyrus pseudococci and Leptomastidea
abnormis, attack P. citri which is, nevertheless, an important pest of citrus
and some other crops (Rosen and Ršssler 1966).
Unsuccessful attempts were made to establish Cryptolaemus
montrouzieri in 1924 from Egypt (Bodenheimer and Guttfeld 1929; Mason
1941) and 1958 (Rosen 1967a), but a Spanish strain introduced in the 1980s
finally established (Mendel et al. 1992). Leptomastix dactylopii imported
from Canada in 1941 was only briefly established (Rivnay 1960). Clausenia
purpurea, a parasitoid of Pseudococcus citriculus introduced from Japan in
1940, attacks P. citri, but has little effect on its density (Rosen 1964).
P. citrus became a serious pest on recently established grapefruit in
southern Negev. The encyrtid Anagyrus pseudococci was present in very
low numbers and Chrysoperla carnea was active, but only in spring. The
coccinellid Chilocorus bipustulatus was more abundant and was considered
to have potential as a biological control agent (Berlinger et al. 1979). Seven
parasitoids and 10 predators have been recorded, of which Anagyrus
pseudococci (Encyrtidae) and Sympherobius sanctus (Chrysopidae) were
found in significant numbers by Mendel et al. (1992). However,
development of A. pseudococci is restricted by winter temperatures. Its
development threshold is 13¡C and no eggs are laid below 15¡C, whereas
P. citri still lays eggs at 13¡C and its development threshold is 8.4¡C. By the
time in late spring when the population of A. pseudococci starts to built up,
P. citri has already settled under the sepals, where it is well protected from
the parasitoid. Climatic conditions were thus regarded as unfavourable for
existing natural enemies (Mendel et al. 1992).

304

Biological Control of Insect Pests: Southeast Asian Prospects

ITALY
Infestations of P. citri develop on citrus in Sicily, Procida, Sardinia and parts
of mainland Italy, especially where it is protected by ants from its native
parasitoids, Leptomastidea abnormis and Anagyrus pseudococci (Zinna
1960). Cryptolaemus montrouzieri has been imported a number of times
since 1908 and has become established in some warmer areas, but is so
reduced in numbers during winter that satisfactory control is not obtained
without supplementations (Constantino 1935; Liotta 1965; Liotta and Mineo
1965). Coccidoxenoides peregrinus and Leptomastix dactylopii were
introduced to Procida in 1956Ð57, but did not survive the winter (Bartlett
1978). L. dactylopii was reintroduced in 1974 to this island, to the mainland
(Campania, Calabria), and to Sardinia and Sicily. At almost all 15 release
sites it afforded, initially, a high level of parasitisation (Viggiani 1975a,b).
Small overwintering populations, reduced further by hyperparasitoids and
fungus diseases, persisted in some areas, but required supplementation for
control (Mineo and Viggiani 1975a,b). L. dactylopii was again released in
1979 on Sicily and gave good results (5% of fruit infested), but it is unclear
whether or not it is able to overwinter (Barbagallo et al. 1982; Longo and
Benfatto 1982). Release of L. dactylopii in a mainland orange orchard in
Calabria led to a reduction in infested fruit from 80.9% to 12% and only
7.3% of the fruit was unmarketable (Luppino 1979). It now seems that
L. dactylopii and Cryptolaemus montrouzieri are mass reared and released
each year against P. citri (Raciti et al. 1995).
Insecticides are seldom required against P. citri in Sardinia, where
L. dactylopii may cause 96% cumulative parasitisation and where
Cryptolaemus montrouzieri and Nephus (= Scymnus) reunioni may increase
to more than 100 individuals per tree (Ortu 1982; Ortu and Prota 1983).
PAPUA NEW GUINEA
Mealybugs, including P. citri, were causing up to 75% reduction of coffee
yield in the highlands near Wau in the mid fifties. Introduction of
Cryptolaemus affinis in 1957 from the lower Markham Valley resulted in its
rapid spread and a substantial reduction of the infestations within one season
(Szent-Ivany 1963).
PERU
Very good control of P. citri is given in some areas by the encyrtid
Coccidoxenoides peregrinus, which is restricted to the citrus mealybug and
appears to have arrived accidentally in 1963 (Salazar 1972).
SOUTH AFRICA
The history of introductions to South Africa against P. citri is confused
because of misidentifications of other mealybugs for this species. However,
Bedford (1976) reports that P. citri is under biological control.

4.15

Planococcus citri

305

When the ant Anoplolepis custodiens was excluded from guava trees
bearing P. citri at Nelspruit, the population of both ants and mealybugs
dropped to half. Without ants, the mealybugs were heavily preyed upon by
the ant-intolerant Exochomus flavipes and the ant-tolerant Scymnus spp.
Later, the mealybugs were almost eliminated by the fungus Cladosporium
sp. nr oxysporum (Samways 1983).
SPAIN
P. citri is parasitised by two indigenous encyrtids, Leptomastidea abnormis
and Anagyrus bohemani, but at a low level (Carrero 1980a). Cryptolaemus
montrouzieri was introduced and established before 1928 and produces
control in the warmer months (Gomez 1951; Carrero 1980b). Leptomastix
dactylopii was introduced in 1948 from California (Gomez 1951) and in
1977 from Italy, but did not become established (Carrero 1980b).
USA (OTHER THAN CALIFORNIA)
Florida
Cryptolaemus montrouzieri was introduced to Florida in 1930 for the control
of P. citri on citrus and bulbs. It became established but failed to overwinter
in sufficient numbers to achieve adequate control (Bartlett 1978; Muma
1954, Watson 1932).
Hawaii
P. citri (originally misidentified as P. kraunhiae) was the target of many
introductions (Swezey 1931), although not as severe a pest as on the
mainland. Cryptolaemus montrouzieri was introduced from Australia in
1894, Leptomastidea abnormis from California in 1915 and Leptomastix
dactylopii also from California in 1946. All became established.
Texas
In 1970, Coccidoxenoides peregrinus was the dominant parasitoid of 3
present on P. citri attacking grapefruit and Sympherobius barberi the
commonest predator (Dean et al. 1971). In 1977 Leptomastix dactylopii,
which had been introduced from California in 1970, and Anagyrus sp. nr
sawadai were found for the first time on P. citri in Texas. L. dactylopii was
the most abundant parasite in mid-August (parasitising 20.7% of P. citri),
the reputedly indigenous Coccidoxenoides peregrinus (with 48.5%) the
most abundant in late August, whereas Anagyrus sp. (with 4.3%) was the
only parasitoid recovered in mid-September. A hyperparasitoid
Prochiloneurus dactylopii attacked 1% of the primary parasitoids in midAugust (Meyerdirk et al. 1978). Release of 5 encyrtid parasitoids on
glasshouse citrus resulted in the rapid suppression of P. citri. Leptomastidea
abnormis, Anagyrus pseudococci and Leptomastix dactylopii persisted for
periods between 24 and 32 weeks and maintained the host at low densities,
whereas Chrysoplatycerus splendens and Coccidoxenoides peregrinus

306

Biological Control of Insect Pests: Southeast Asian Prospects

persisted for only 20 weeks (Summy et al. 1986). The coccinellid Diomus
pumilio, whose biology is described, was introduced from South Australia
and is a potentially valuable predator (Meyerdirk 1983).
USSR
P. citri can be a serious pest of grape vines, citrus, fig and pomegranate.
Anagyrus pseudococci from Surkham Dalya and Leptomastix dactylopii and
Leptomastidea abnormis from California were introduced to Uzbekistan
commencing in 1959 and resulted in establishment (Roxanova and Loseva
1963). Anagyrus pseudococci destroys up to 75% of P. citri in areas not
treated with insecticides in the south of European Russia and in Soviet
Central Asia. The next most important parasitoid, Allotropa mecrida
attacked up to 20% in Turkmenia in 1967 and in Georgia. In 1960,
Leptomastidea abnormis and Leptomastix dactylopii were introduced from
USA into Georgia and Turkmenia. In Transcaucasia and Soviet Central Asia
the hyperparasitoid Thysanus subaeneus attacks 18 to 20% of Allotropa
mecrida. Other hyperparasitoids are Pachyneuron solitarius and
Neoprochiloneurus bolivari.
One of the most effective predators of P. citri is Cryptolaemus
montrouzieri, introduced from Egypt in 1932 to the Black Sea area. Others
are Coccinella septempunctata, Hyperaspis polita, Nephus bipunctatus,
Scymnus apetzi, S. subvillosus, and S. biguttatus which were recorded in
Turkmenia. The larvae of the fly Leucopis alticeps and of the lacewing
Chrysoperla carnea are able to devastate all stages of P. citri. The
coccinellids were parasitised by Homalotylus sp. and the lacewing by
Telenomus acrobates (Niyazov 1969).
The coccinellid Nephus reunioni was introduced into southern areas in
1978 and has reduced P. citri on grape vines. It is capable of overwintering,
but with high mortality, and is more tolerant of moisture conditions than
Cryptolaemus montrouzieri (Orlinskii et al. 1989).

Table 4.15.4

Introductions for the biological control of Planococcus citri

Species
HYMENOPTERA
ENCYRTIDAE
Anagyrus kivuensis
Anagyrus pseudococci

Anagyrus sp. nr pseudococci
Anagyrus sp. nr sawadai
Blepyrus saccharicola
Coccidoxenoides peregrinus

Year

Kenya
Brazil
California
California

California
California
Bermuda
Chile

Italy

California

1948
1934
1953
1951Ð54
1954
1955, 1965

California
Hawaii
China
China
California
Sicily
California
California
USA
Mexico

Texas
Bermuda
California
California
Bermuda
Chile
Peru
California
Chile
Bermuda
USSR
California

1951Ð54

1951Ð54
1954
1963
1914
1931
1951Ð54
1960
1956

Result Reference

Ð
Ð
+
Ð
Ð
Ð
+
Ð
Ð
+
+
Ð
+
+
+
+
Ð

Bartlett & Lloyd 1958
Bartlett & Lloyd 1958
Bartlett & Lloyd 1958
Bennett & Hughes 1959
Gonzalez & Rojas 1966
Bartlett 1978,
Bartlett & Lloyd 1958
Meyerdirk et al. 1978
Bennett & Hughes 1959
Armitage 1920
Flanders 1951
Bennett & Hughes 1959
Gonzalez & Rojas 1966
Salazar 1972
Viereck 1915; Smith 1917
Gonzalez & Rojas 1966
Bennett & Hughes 1959
Niyazov 1969
Bartlett & Lloyd 1958

Planococcus citri

Leptomastidea sp. nr abnormis

To

4.15

Leptomastidea abnormis

From

307

Species
HYMENOPTERA
ENCYRTIDAE (contÕd)
Leptomastix dactylopii

308

Table 4.15.4 (contÕd) Introductions for the biological control of Planococcus citri
To

Year

Result Reference

Brazil
California

California
Chile
Chile
Bermuda
Turkey
Texas
Australia
India
India

1934
1936
1958
1951Ð54

Compere 1939
Gonzalez & Rojas 1966
Gonzalez & Rojas 1966
Bennett & Hughes 1959
Tuncyurek 1970
Meyerdirk et al. 1978
Smith et al. 1988
Nagarkatti et al. 1992
Krishnamoorthy 1990,
Prakasan & Bhat 1985;
Krishnamoorthy & Singh 1987;
Prakasan 1987; Reddy et al. 1988;
Mani 1994
Rivnay 1960
Ð (early) Luppino 1979; Longo & Benfatto
1982
+ (later) Viggiani 1975a,b; Mineo &
Viggiani 1976a
Krambias & Kontzonis 1980
+
Viggiani 1975a,b; Delrio et al.
Ð
1981; Ortu & Prota 1981;
Ortu 1982
Ð
Barbagallo et al. 1982
Longo & Benfatto 1982
Viggiani 1975a,b
Ð
Carrero 1980b
Niyazov 1969

California
California
California

1970
1980
1983Ð85
1984

Israel
Italy

1956Ð7

Cyprus
Sardinia

1977
1974

Sicily

1979

Spain
USSR

1977
1960

Italy

Italy
USA

+
Ð
+
?
+
+
+
+
+
Ð

Biological Control of Insect Pests: Southeast Asian Prospects

From

Table 4.15.4 (contÕd) Introductions for the biological control of Planococcus citri
Species
HYMENOPTERA
ENCYRTIDAE (contÕd)
Pseudaphycus perdignus
Tropidophryne melvillei

From

To

Year

Result Reference

Eritrea
California
Kenya

California
Bermuda
California

1953
1951Ð54
1948

China

California

California
California

Bermuda
Chile

India
Kenya

California
California
Greece
Sardinia

<1980

Ð
Ð
Ð
?

Turkey
Israel
Israel
USSR
USA
W.A.
France

<1970
1924
1958
1932
1891Ð92
1902
1918

Ð
Ð
+
+
+
+

Ð
Ð
Ð

Bartlett & Lloyd 1958
Bennett & Hughes 1959
Bartlett & Lloyd 1958

?

Flanders 1951; Bartlett & Lloyd
1958
Bennett & Hughes 1959
Gonzalez & Rojas 1966

HYMENOPTERA
PLATYGASTERIDAE
Allotropa citri

1954

Ð
Ð

4.15

COLEOPTERA

Egypt

Bartlett & Lloyd 1958
Bartlett & Lloyd 1958
Argyriou 1970
Ortu & Prota 1981, 1985; Ortu
1982
Tuncyurek 1970
Bodenheimer & Guttfeld 1929
Rosen 1967a
Niyazov 1969
Bartlett 1978
Wilson 1960
Marchal 1921

309

NSW
California

1955
1948

Planococcus citri

COCCINELLIDAE
Brumus suturalis
Chilocorus angolensis
Cryptolaemus montrouzieri

Species
COLEOPTERA

From

To

Year

California
California

Bermuda
Chile

1955
1931
1933
1934

Diomus pumilio (= D. flavifrons)
Exochomus flavipes
Exochomus metallicus
Hyperaspis jucunda
Hyperaspis sp. nr globula
Hyperaspis sp.
Hyperaspis 2 ´ spp.
Nephus (=Scymnus) bipunctatus
Nephus (=Scymnus) reunioni

Spain
Australia
Kenya
Eritrea
Trinidad
Mexico
Eritrea
California
Philippines
East Africa

India
Indonesia
Israel
Texas
California
California
California
California
California
Bermuda
California
USSR

Nephus sp.
Platynaspis (?) sp.
Scymnus binaevatus
Scymnus quadrivittatus
Scymnus sordidus

Trinidad
Eritrea
South Africa
Kenya
California

California
California
California
California
Bermuda

310

Table 4.15.4 (contÕd) Introductions for the biological control of Planococcus citri
Result Reference

COCCINELLIDAE (contÕd)

1948
1954
1955
1954
1953
1958
1910
1978
1958
1953
1948
1955

Ð
Ð
+
Ð
Ð

Bennett & Hughes 1959
Gonzalez & Rojas 1966
Gonzalez & Rojas 1966
Gonzalez & Rojas 1966
Prakasan 1987
Kalshoven 1981
Mendel et al. 1992
Meyerdirk 1983
Bartlett & Lloyd 1958
Bartlett 1978
Bartlett & Lloyd 1958
Bartlett & Lloyd 1958
Bartlett & Lloyd 1958
Bennett & Hughes 1959
Bartlett 1978
Ershova & Orlinskii 1982; Orlinskii
et al. 1989
Bartlett & Lloyd 1958
Bartlett & Lloyd 1958
Smith 1923
Bartlett & Lloyd 1958
Bennett & Hughes 1959

Biological Control of Insect Pests: Southeast Asian Prospects

1980s

+
Ð
Ð
?
+
Ð
+
+
Ð
+
Ð
Ð
Ð
Ð
Ð
+

4.15

Planococcus citri

311

Biology of important natural enemies
Anagyrus pseudococci Hym.: Encyrtidae
This is a solitary endoparasite of 2nd, 3rd and 4th instar mealybugs, but
prefers 3rd instar and egg-laying females. It is believed to be native to the
Mediterranean. A. pseudococci has been known since 1913 in Italy as a
widespread parasitoid of P. citri and, in Israel, attacking both P. citri and
Pseudococcus citriculus (Rivnay 1960; Rosen 1964). It is common on
P. citri in Argentina (Compere 1939). In the laboratory it develops
successfully on Pseudococcus fragilis, P. longispinus and P. obscurus.
Females lay about 45 eggs at the rate of 3 to 4 per day. In the laboratory
these hatch in 44 hours at 27¡C and the life cycle takes 17 to 18 days (Bartlett
1978) or 15.5 days at 25.6¡C and 60% RH for a Californian strain, which
also had a life span of 8.2 days for virgin and 6.9 days for mated females.
Virgin females produce males. A. pseudococci is most active in the spring
and autumn (Domenichini 1952; Avidov et al. 1967; Rivnay 1968; Chandler
et al. 1980).
Progeny production increased and longevity decreased with increase in
temperature between 18¡ and 30¡C (Tingle and Copland 1989). Most
progeny are produced between 27¡ and 30¡C and the threshold for
development is 13.06¡C for males and 12.57¡C for females (Islam and Jahan
1993). In the laboratory maximum egg production was achieved when 50%
honey solution was provided (Islam and Jahan 1992, 1993). Oviposition
behaviour is described by Islam (1992). About 40% of parasitoid eggs laid in
P. citri may be lost due to encapsulation (Blumberg et al. 1995). In
Argentina, larvae of A. pseudococci are attacked by the hyperparasitoid
Coccophagus heteropneusticus (Compere 1939).

Coccidoxenoides peregrinus Hym.: Encyrtidae
This parasitoid, earlier widely known as Pauridia peregrina, is probably
native to southern China (Bartlett 1978), although Meyerdirk et al. (1978)
suggest that it is indigenous to Texas. It has been reported, inter alia, from
India, Japan, Philippines, Fiji, Hawaii and Uganda. It is a solitary
endoparasitoid of 1st, 2nd and 3rd instar female Planococcus citri and
P. kenyae and 1st and 2nd instar males. It is normally parthenogenetic, but
there are rare males. In Uganda it parasitises P. kenyae (Armitage 1920;
Essig 1931) and, in Peru P. citri (Beingolea 1969). In India it completed its
development only in P. citri, although it attacked other mealybugs
(Krishnamoorthy and Mani 1989a).
Females commence oviposition shortly after emergence, and continue
for about 2 days. At 27¡C larval development takes 11 to 12 days and the
pupal stage 16 to 18 days (Zinna 1960; Fisher 1963). However, in India,

312

Biological Control of Insect Pests: Southeast Asian Prospects

development took 23 to 27 days and adults survived 4 to 9 days at 28 ± 2¡C
(Krishnamoorthy and Mani 1989a). In 1991 in Karnataka, C. peregrinus was
more abundant than Leptomastix dactylopii on P. citri on lemon and acid
lime and was responsible for the decline of mealybug populations (Mani
1994).
C. peregrinus has been introduced into California (Flanders 1951), Italy
(Bartlett 1978) and Bermuda (Bennett and Hughes 1959).

Cryptolaemus montrouzieri Col.: Coccinellidae
This general predator of mealybugs, which also feeds on some other scales
(Eriococcus sp., Pulvinaria spp.) and aphids, is native to eastern Australia. It
is the most widely distributed of all natural enemies of mealybugs, a count in
1978, covering the past 80 years, listing more than 40 countries, geographic
areas or islands into which it has been imported. In many instances it was
introduced against mealybugs other than P. citri and sometimes against
coccids such as Pulvinaria spp., which produce egg masses similar to those
of mealybugs (Bartlett 1978).
Both larvae and adults feed voraciously on all mealybug stages, for
example a larva is recorded as consuming an average of 3331 host eggs
(Oncuer & Bayhan 1982) and females need to consume at least 8 P. citri for
normal egg production (Reddy et al. 1991). C. montrouzieri does not
distinguish between unparasitised P. citri and mealybugs parasitised by
Leptomastix dactylopii (Prakasan and Bhat 1985). Adults mate 1 or 2 days
after emergence and, 5 to 6 days later, females begin ovipositing in or near
host egg masses. About 100 eggs are deposited in 1 month. These hatch in 4
to 8 days, and wax-covered larvae develop in 12 to 20 days, so that the life
cycle can be completed in slightly less than a month (27.7 days at
25.5¡ ± 1¡C: Oncuer and Bayhan 1982), although there are usually only 4
generations a year. Development stops below 10¡C and freezing
temperatures are lethal. Pupae, and occasionally adults, are capable of
hibernating. Hot dry climates are tolerated, but high humidities are said to be
detrimental. C. montrouzieri thrives when host density is high and, under
these conditions, is capable of providing spectacular control. However its
searching ability and natural spread is poor, so it often dies out locally when
hosts become scarce (Bodenheimer 1928; Cole 1933; Mineo 1967).
Methods have been developed for the production of mealybugs and
C. montrouzieri that permit the production and release of large numbers of
the predators at low cost (Branigan 1916, Smith and Armitage 1920, 1931;
Fisher 1963; Chacko et al. 1978; Oncuer and Koldas 1981).

4.15

Planococcus citri

313

Diomus pumilio Col.: Coccinellidae
Details of the biology and voraciousness of this predator, which was
introduced from South Australia to Texas for biological control of P. citri,
are given by Meyerdirk (1983).

Leptomastidea abnormis Hym.: Encyrtidae
This solitary endoparasite is possibly native to the Mediterranean where it
was first recognised attacking P. citri (Viereck 1915), although it is now
widespread, occurring in eastern USA, Canada, Brazil (Compere 1939) and
many other countries.
L. abnormis strongly prefers small 2nd instar mealybugs for oviposition,
but also attacks first and third instars. Females begin to search for hosts soon
after emergence. The number of eggs laid varies from 57 to over 300,
although it is reported that only about 33 survive to the adult stage. Fertilised
eggs give rise to females and unfertilised eggs to males.
The inconspicuously stalked eggs are laid free in the haemolymph and
hatch in 36 to 72 hours. The larvae consume haemolymph at first but, in the
last instar, consume the entire body contents. The tailed larvae complete
development in about 8 days and the life cycle may be as short as 17 days in
the laboratory at 26¡C (or 25 days at 25¡ to 27¡C and 50Ð70% RH). In the
laboratory females attained their maximum progeny production at 24¡C and
this remained constant up to 34¡C (Tingle and Copland 1989). In the field a
generation in summer takes about 1 month. There may be 5 or 6 generations
a year, adults living 11 days if provided with honey and water (Viereck
1915; Smith 1916, 1917; Perez 1929; Rivnay and Perzelan 1943; Clancy
1944; Viggiani and Maresca 1973).

Leptomastix dactylopii Hym.: Encyrtidae
This solitary endoparasitoid prefers 3rd instar and young (but not egglaying) females and occasionally attacks 1st and 2nd instars (Bartlett 1978;
Mani 1995). It is presumed to be native to Brazil, although found also in the
West Indies and parts of southern USA (Compere 1939). In the field it
appears to be specific to P. citri (Bartlett 1978; Sinadskii and
Kozarzhevskaya 1980; Nagarkatti et al. 1992), but it can be reared on
Planococcus lilacinus (Mani 1995), P. pacificus (Nagarkatti et al. 1992),
Phenacoccus solani (Lloyd 1964) and Pseudococcus comstocki (Clancy
1944). Its reported attack on Dysmicoccus brevipes in Hawaii and on
Pseudococcus vitis in USSR was probably on P. citri (Kobakhidze 1965;
Bartlett 1978).
It has been used in suppression of P. citri in USA (Fisher 1963), Procida
island and mainland Italy (Luppino 1979), Cyprus (Krambias and Kontzonis
1980) and India (Krishnamoorthy 1990).

314

Biological Control of Insect Pests: Southeast Asian Prospects

Adults live up to 35 days and longer at 15¡ than at 7¡ or 25¡C (Yigit et al.
1994) although maximum progeny are produced at 30¡ (Tingle and Copland
1989). Parasitised hosts are generally rejected after simple antennal contact
but, if not then, also following defensive behaviour of the host or possibly
after detection of the egg stalk emerging from the surface of the host. If not
rejected earlier, they may be rejected after insertion of the ovipositor
(Baaren and Nenon 1994). About 18 eggs are laid each day, up to a total of
300 per female. These hatch in 1.5 to 2 days at 28¡C and there are four larval
instars, each of about 2 days. The pupal stage lasts 7 to 8 days. In Italy there
are 6 (and a partial 7th) generations per year (Zinna 1959, 1960) and in
Tashkent 5 generations (Roxanova and Loseva 1963).
More males than females are produced from young than from old adult
P. citri (Su and Li 1993; Mani 1995), more females from larger hosts and
more males from smaller larval instars (Jong and Alphen 1988, 1989).
Additional information on the biology of L. dactylopii is given by Lloyd
(1958, 1964, 1966) and Tingle and Copland (1989).
The original introduction of L. dactylopii from Brazil to California in
1934 was based on a single pair (Compere 1939). The extent to which the
progeny of this pair may have had genes from later introductions added to
the gene pool is quite unclear. There may thus be good justification for
obtaining fresh stock from matching climatic zones in Brazil if new
introductions are to be made.

Odontochrysa (= Chrysopa) lacciperda Neu.: Chrysopidae
Details of the biology and voracity of this lacewing predator of P. citri are
provided by Krishnamoorthy (1988).

Pseudaphycus maculipennis Hym.: Encyrtidae
This species, studied in Ukraine, for the biological control of P. citri, is said
to be specific (Sinadskii and Kozarzkevskaya 1980).

Scymnus includens Col.: Coccinellidae
The life cycle and rearing details of this important predator of P. citri in Italy
are described by Tranfaglia and Viggiani (1973).

Spalgis epius Lep.: Lycaenidae
The predatory larvae of this lycaenid butterfly are often the commonest
natural enemies of P. citri in India. They also attack Planococcus lilacinus,
Chloropulvinaria psidii and Ferrisia virgata (Chacko et al. 1977).

4.15

Planococcus citri

315

Comments
P. citri is frequently only one of several pests of importance on the economic
crops that it infests and, if biological control is contemplated, it is advisable
to have its identity confirmed by a competent taxonomist. Its abundance is
increased when it is tended by ants for its honeydew and often, by the
injudicious use of insecticides (against it or accompanying pests). This is
mainly because of the adverse effects on natural enemies and sometimes
because low levels of insecticide may stimulate egg-laying. There has thus
been considerable effort, within an Integrated Pest Management framework
and with varying degrees of success, to develop biological control of each of
the important pests in a complex, for example on citrus, grape vines and in
glasshouses. This has also involved the careful selection of pesticides (if
these are still required) that have the least possible adverse effect on the
major natural enemies.
Where natural enemies already present are not adequate, the almost
universal response has been to introduce the encyrtid Leptomastix dactylopii
and the coccinellid Cryptolaemus montrouzieri (if the latter is not already
present as a result of introductions for other pests).
Both species are affected by the winter in temperate zones and survive
less well than P. citri in the Mediterranean region. Under these
circumstances, classical biological control seldom provides economic
control alone and requires augmentation of the natural enemies from time to
time.
Where P. citri is still a problem in the field in warm regions and
Cryptolaemus montrouzieri is not present, serious thought should be given
to introducing the latter. More importantly, however, if not already present
Leptomastix dactylopii (of Brazilian origin) should be of highest priority,
followed by Leptomastidea abnormis and Anagyrus pseudococci (both of
Mediterranean origin and capable of maintaining populations of low levels
under slightly cooler conditions). Under Southeast Asian and Pacific
conditions, Coccidoxenoides peregrinus (of south China or Indian origin)
deserves special attention.
If Planococcus citri proves to be of south China origin (and this
hypothesis requires confirmation) it is surprising that only two parasitoids
have been reportedÑthe encyrtid Coccidoxenoides peregrinus and the
platygasterid Allotropa citri. A thorough survey in this region might well
reveal additional valuable specific or near specific parasitoids. There are
good grounds for optimism that biological control of P. citri can be
improved in warmer regions by establishing, if missing, any one of the
foregoing natural enemies.

316

Biological Control of Insect Pests: Southeast Asian Prospects

P. citri is one of a group of pests that commonly cause problems in
glasshouses in Europe and North America. The mass production and release
from time to time, almost always of a predator (especially Cryptolaemus
montrouzieri, but sometimes also Nephus reunioni) and one or more
encyrtid parasitoids (especially Leptomastix dactylopii and Leptomastidea
abnormis but, on occasion also, Coccidoxenoides peregrinus, Anagyrus
pseudococci and Chrysoplatycerus splendens) has generally removed the
need to use insecticides. Examples of control in glasshouses include those
from Belgium (Ronse 1990), Netherlands (Heanekam et al. 1987), France
(Panis and Brun 1971), U.K. (Copland 1983, Hussey and Scopes 1985;
Tingle and Copland 1988), Israel (Rubin 1985) and USA (Summy et al.
1986).

317

4.16

Trichoplusia ni

China

+

India

Taiwan

+

Myanmar
20°

++

Laos

20°

Thailand

Philippines

++

Cambodia

++

Vietnam

+

Brunei
Malaysia




Singapore

P
Indonesia

20°

Papua
New Guinea

Australia

20°

The cabbage looper, Trichoplusia ni, of North American origin, attacks cabbage (and other
Brassicaceae), cotton, lettuce, tomatoes and a very wide range of other cultivated crops and
wild hosts. In North America it is maintained for much of the time at sub-economic levels by a
wide range of natural enemies, but damaging outbreaks do occur, particularly when its natural
enemies are killed by insecticides applied against other pests in the same crop.
The major predators, which together cause considerable mortality, are widely polyphagous,
and hence are unlikely to be considered seriously as classical biological control agents. Several,
among its 120 or so parasitoids are somewhat more host specific and are worth serious
consideration. They include species of Trichogramma egg parasitoid; Copidosoma
truncatellum (an egg-larval parasitoid); and the larval parasitoids Hyposoter exiguae,
Microgaster brassicae and Voria ruralis.
High larval mortality is frequently produced by a valuable, naturally occurring, nuclear
polyhedral virus, particularly late in the season when T. ni populations are high and rainfall is
adequate.
There appear to be good reasons for optimism that the establishment of suitable missing
natural enemies in regions into which T. ni has spread would assist in maintaining its populations
at sub-economic levels.

318

Biological Control of Insect Pests: Southeast Asian Prospects

Trichoplusia ni (HŸbner)
Lepidoptera: Noctuidae
cabbage looper
Synonym: In North America T. ni has sometimes been referred to
as Autographa brassicae (Riley).

Rating
Southeast Asia
7

++
+
P

Myan, Thai, Camb
Viet
Indo

China
+

(all 14 southern Provinces)

Origin
T. ni is native to the southern half of North America.

Distribution
Widespread in southern Europe, North, East and South Africa, extending
eastwards through Pakistan, India and Bangladesh to much of Southeast
Asia, to China, Taiwan, Korea and Japan; not yet present in Papua New
Guinea, Australia, New Zealand or the oceanic Pacific; present in South
America in Argentina, Bolivia, Brazil, Chile, Colombia and Uruguay
(Apablaza and Norero 1993; CIE 1974b). In North America, T. ni
overwinters in the south, re-invading northern States each spring.

Biology
Adult T. ni are mottled brownish in colour. The forewings, producing a span
of about 3.8 cm, each bear an 8-shaped silvery mark near the middle. Adults
are mostly active at night, but also on dull days. By day, they rest on the
underside of host plants, in the debris at their base, or in vegetation bordering
a cultivated crop. Adults are capable of flying long distancesÑ700 km
northwards from southern Texas (Lingren et al. 1993) 161 km from land into
the Gulf of Mexico, and up to 1500m in California (Kreasky et al. 1972).
They move readily between cultivated and wild hosts. A female may lay
her own bodyweight in eggs, but requires access to nectar and moisture to do
so. After emerging from the pupa, there is a pre-ovipositional period of about
4 days, after which mating begins and can occur up to 16 days. A female may
produce well over 1000 viable eggs. Peak egg deposition is often correlated
with the lunar cycle, a rapid rise in egg density on cotton occurring shortly

4.16

Trichoplusia ni

319

after full moon. There are 3 generations a year in southern California, but
breeding is continuous in the Caribbean (McKinney 1944; Kishaba et al.
1967; Ehler and van den Bosch 1974; Ehler 1977a; Debolt et al. 1984;
Mitchell and Chalfant 1984).
In cotton, a single egg is laid on the underside of a mature leaf in the
upper half of the plant, but seldom in a terminal. On hatching, the larva
generally feeds on the underside of the leaf near the egg, later moving from
leaf to leaf as it passes through 5 instars during 2 to 4 weeks (Ehler 1977a).
Total development time ranges from 19.9 days at 30¡C to 40.4 days at 20¡C
(Jackson et al. 1969). In India at 25¡C the egg stage lasted 2.06 days, the
larval stage of 5 instars 12.38 days, the prepupal 1 day, the pupal 7.27 days
and the adult 7.32 days (Gaikwad et al. 1983). Additional data are provided
by Chi and Tang (1993) and Yadav et al. (1983). Flight and mating activity
are diminished at temperatures less than 16¡C and the threshold for larval
development lies between 10¡C and 13¡C. The larva has 3 pairs of true legs
on the thorax and 3 pairs of fleshy abdominal prolegs near the posterior end.
It crawls by doubling up to form a loop, thus projecting the body forward.
Larvae are green with a white lateral line and 2 whitish lines along the
middle of the dorsal surface. After a brief prepupal period, pupation occurs
in a loosely spun cocoon either on the underside of a leaf or in plant debris at
the soil surface (Ehler 1977a). There is no diapause (Fye 1979).
Eggs and larvae, but also pupae, of T. ni are believed to be readily
transhipped in vegetables and cut flowers (Poe and Workman 1984).
Male T. ni are powerfully attracted to the sex pheromone emitted by
virgin females and will fly long distances upwind under its influence. The
pheromone is produced in a gland situated dorsally between the 8th and 9th
abdominal segments. Six components have been identified and are required
to ensure specificity to T. ni. The major component is (Z)-7-dodecenyl
acetate, known as looplure, which also attracts males of other looper species.
Looplure, with or without other components, has been used for trapping
males and also in mating disruption experiments. Male T. ni also produce a
pheromone (with at least 3 components) which attracts both females
(especially when starved) and males. ( Bjšstad et al. 1984; McLaughlin
1984; Heath et al. 1992; Dunkelblum and Mazor 1993; Landolt 1995;
Landolt et al. 1996).

Host plants
In 1966, larvae of T. ni were recorded causing damage to at least 119 species,
varieties and cultivars in 29 families of plants (Sutherland 1966) and that
number has increased steadily over the years to over 160 species in 36

320

Biological Control of Insect Pests: Southeast Asian Prospects

families, although cultivated brassicas are those most favoured when
available (Martin et al. 1976a; Sutherland and Greene 1984). Brassicas and
cotton are most frequently cited as being damaged, although the list of
economic crops affected also includes asparagus, beans, sugarbeet,
cantaloupes, capsicum, carrot, celery, maize (silks), cucumber, lettuce,
parsley, pea, potato, soybean, spinach, squash, tobacco, tomato and
watermelon.
At times, serious infestations occur, but T. ni is generally regarded as a
secondary pest whose numbers increase late in the season (Ehler 1977a,b).
Differences in susceptibility to T. ni have been found in cabbage and
related brassicas, in cotton and in lettuce (Cuthbert and Kishaba 1984), in
tomato (Sinha and McLaren 1989) and in soybeans (Luedders et al. 1978;
Khan et al. 1986), but these largely remain to be exploited. Transgenic
cotton lines containing Bacillus thuringiensis toxin genes limited damage to
initial feeding sites, compared with more extensive skeletonisation in 2
control cultivars (Flint et al. 1995). Transgenic Bt canola (rape) showed
excellent resistance to T. ni (Stewart et al. 1996).
Larvae are easily reared on an artificial diet (e.g. Shorey and Hale 1965;
Honda et al. 1996).

Damage
The cabbage looper is a major pest of commercial brassicas in North
America and many other areas where it occurs and causes significant
damage also, in particular, to lettuce, tomatoes, celery and cotton. Indeed,
Schwartz (1983) claimed that, if uncontrolled, 92% loss would be sustained
in the cotton yield in USA, compared with 30% if controlled. Larvae chew
large irregular holes, leaving only main veins, in the outer leaves of cabbage,
cauliflower and related plants, often leaving them riddled with holes. Later,
the outer layers of cabbage heads are eaten and masses of faecal pellets
contaminate the feeding sites. So much leaf tissue is eaten that heads of
cabbage and cauliflower are stunted and other leafy vegetables are rendered
unfit to eat.
Damage caused to cotton by the larvae consuming leaves is often
considered less serious, since it frequently occurs late in the growth of the
cotton plant, so that it may not have a major effect on yield. Cabbage looper
larvae are essentially foliage feeders and cause their damage in this way.

Natural enemies
Over the last few decades T. ni has become a very widely used laboratory
insect, particularly in North America. As a result, there are many papers

4.16

Trichoplusia ni

321

describing laboratory experiments in which parasitoids, predators and/or
pathogens have been tested on T. ni eggs or larvae. It is often not possible to
determine from these accounts whether or not the natural enemy involved
has been found attacking eggs or larvae of T. ni in the field and hence
possibly a useful control agent. If T. ni is susceptible to the agent in the
laboratory, such records have often been included, although behavioural or
other factors might well influence its effectiveness under field conditions.
No attempt has been made to include reports of all of the minor natural
enemies, especially in the earlier literature.
As will become clearer when the situation is discussed later, many
parasitoids (Table 4.16.1), predators (Table 4.16.2) and pathogens (Table
4.16.3) have been recorded attacking the cabbage looper in the field and/or
in the laboratory and there is little doubt that looper populations are
frequently kept at sub-economic levels by their action. A number of the
natural enemies recorded are not widespread in distribution and appear to be
incidental records.
Many of the predators are widely polyphagous and attack insect pests in
several orders, although a few are considerably more selective than that.
Parasitoids, on the other hand, tend to be significantly less polyphagous than
predators and some appear to be confined to T. ni, at least in certain crops.
Where parasitoids have a relatively broad host range, available records
indicate that this extends mainly to larvae of other Lepidoptera (generally
pest species) in the same crop situation. The extent to which it extends also to
non-pest, non-target species is not documented. Nevertheless, there are
several species that merit serious consideration as candidates for classical
biological control.
All of the Trichogramma species oviposit and develop in the host egg. A
few others (eg. Copidosoma truncatellum, Chelonus blackburni, Chelonus
insularis) oviposit in the egg and develop in the host larva; and the remainder
are larval and/or pupal parasitoids.
Naturally occurring epizootics of nuclear polyhedrosis virus in medium
to large T. ni larvae are considered to be the major mortality factor affecting
them on cabbage in summer and autumn in southern California (Oatman and
Platner 1969), on broccoli in Virginia (Hofmaster 1961) and on cabbage in
North Carolina (Elsey and Rabb 1970b). Polyhedrosis was seldom a major
factor on cotton in southern California (Ehler 1977b), although outbreaks
did occur late in the season or at times of high T. ni abundance (Ehler and van
den Bosch 1974).
Although the mortality produced is probably not significant, birds and
bats are known to feed on moths in flight; and earwigs on adults resting
beneath host plants (McKinney 1944; Sutherland 1966).

322

Table 4.16.1

Parasitoids of Trichoplusia ni

Species
HYMENOPTERA

Reference

BRACONIDAE
Cardiochiles nigriceps
Chelonus blackburni
Chelonus curvimaculatus
Chelonus nr curvimaculatus
Chelonus formosanus
Chelonus insularis

USA
USA
USA
USA
Taiwan
USA

Chelonus sp.
Cotesia autographae
Cotesia congregata
Cotesia glomerata
Cotesia laeviceps
Cotesia marginiventris

USA
USA
USA
USA
USA
USA

Cotesia plutellae
Cotesia ruficrus

India
USA
India
USA
USA
India
USA

Harding 1976
Fye & Jackson 1973; Jackson et al. 1979
Soldevila & Jones 1991, 1994
Jones et al. 1981, 1990; Jones 1986
Chou 1981
Ehler et al. 1973; Ehler & van den Bosch 1974; Jones 1982; Henneberry et al.
1991
BŸhler et al. 1985
Muesebeck & Krombein 1951
Riley 1883
Muesebeck & Krombein 1951; van den Bosch & Hagen 1966; Ehler 1977a
Oatman et al. 1983a
van den Bosch & Hagen 1966; Ehler & van den Bosch 1974, Harding 1976,
Latheef & Irwin 1983; Henneberry et al. 1991
Manjunath 1972; Joshi & Sharma 1974
McCutcheon et al. 1983
Manjunath 1972
Harding 1976
Miller & West 1987
Manjunath 1972
Muesebeck & Krombein 1951; Grant & Shepard 1984

Cotesia spp.
Cotesia yakutatensis
Meteorus autographae

Biological Control of Insect Pests: Southeast Asian Prospects

Country

Table 4.16.1 (contÕd) Parasitoids of Trichoplusia ni
Species
HYMENOPTERA
BRACONIDAE (contÕd)
Meteorus laphygmae
Microgaster (= Microplitis) brassicae

Reference

USA
USA

Harding 1976
McKinney 1944; van den Bosch & Hagen 1966; Clancy 1969; Oatman & Platner
1969; Ehler & van den Bosch 1974; Harding 1976; Ehler 1977a; Jones 1982;
Oatman et al. 1983a; Henneberry et al. 1991
Oatman & Platner 1969; Oatman et al. 1983a
Butler 1958a
De Gant 1930
Butler 1958a
McKinney 1944
Wall & Berberet 1975
Chou 1981

USA
USA
USA
USA
USA
USA
Taiwan

Spilochalcis flavopicta
Spilochalcis side
Spilochalcis sp. nr mariae

USA
USA
USA

Dindo 1993
Thompson 1980
Thompson 1983a,b
Elsey & Rabb 1970b; Harding 1976; Patana et al. 1978; Chamberlin & Kok
1986; Grant & Shepard 1987
Harding 1976
Harding 1976
Harding 1976

Trichoplusia ni

Brachymeria lasus
Brachymeria ovata

Italy
USA
USA
USA

4.16

Microgaster plutellae
Microplitis alaskensis
Rogas granulatus
Rogas molestus
Rogas rufocoxalis
Rogas sp.
Snellenius manilae
CHALCIDIDAE
Brachymeria intermedia

Country

323

Species
HYMENOPTERA

EULOPHIDAE
Baryscapus galactopus
Euplectrus comstockii
Euplectrus platyhypenae
Euplectrus sp.
Pediobius facialis
Pediobius nr facialis
ICHNEUMONIDAE
Angitia insularis
Campoletis flavicincta
Campoletis sonorensis
Campoletis sp.
Campoletis websteri
Casinaria infesta
Cryptus rutovinctus

Country

Reference

USA
USA
Canada
USA

Brazil

Strand et al. 1991; Baehrecke et al. 1993; Grbk et al. 1992; Ode & Strand 1995
Ehler 1977a
Harcourt 1963
Riley 1883; McKinney 1944; Pimentel 1961; Oatman 1966; van den Bosch &
Hagen 1966; Clancy 1969; Oatman & Platner 1969; , Ehler & van den Bosch
1974; Ehler 1977a; Latheef & Irwin 1983; Oatman et al. 1983a; Roltsch & Mayse
1983; Chamberlin & Kok 1986
Silva & Santos 1980

USA
USA
USA
Santiago
USA
USA

Peck 1963
McKinney 1944; Harding 1976; Coudron et al. 1994
Wall & Berberet 1974, 1975; Coudron et al. 1990; Kelly & Coudron 1990,
van Harten & Miranda 1985
Oatman & Platner 1969
Parkman et al. 1983

USA
USA
USA
USA
USA
USA
USA

Hayslip et al. 1953; Harding 1976
Krombein et al. 1979; Oatman et al. 1983a
Cook et al. 1984
Oatman et al. 1983a
Harding 1976
Harding 1976
Krombein et al. 1979

Biological Control of Insect Pests: Southeast Asian Prospects

ENCYRTIDAE
Copidosoma floridanum
Copidosoma sp.
Copidosoma truncatellum

324

Table 4.16.1 (contÕd) Parasitoids of Trichoplusia ni

Table 4.16.1 (contÕd) Parasitoids of Trichoplusia ni
Species
HYMENOPTERA
ICHNEUMONIDAE (contÕd)
Diadegma insulare
Diadegma plutellae
Diadegma spp.
Echthromorpha punctum
Enicospilus sp.
Gambrus ultimus
Gelis tenellus
Hyposoter exiguae

USA
USA
USA
India
India
USA
USA
USA

Martin et al. 1982
Harding 1976
Sutherland 1966
Manjunath 1972
Manjunath 1972
Chamberlin & Kok 1986
Sutherland 1966
Oatman 1966; van den Bosch & Hagen 1966; Clancy 1969; Oatman & Platner
1969, Ehler & van den Bosch 1974; Ehler 1977a; Jones 1982; Oatman et al.
1983a,
Sutherland 1966
Muesebeck & Krombein 1951
Harcourt 1963
Silva & Santos 1980
Harding 1976
Clancy 1969; Oatman et al. 1983a
Watson et al. 1966
Clancy 1969; Ehler & van den Bosch 1974; Ehler 1977a; Fox et al. 1996
Sutherland 1966
Harding 1976
Harding 1976

USA
USA
Canada
Brazil
USA
USA
USA
USA
USA
USA
USA

Trichoplusia ni

Microcharops bimaculata
Microcharops tibialis
Nepiera fuscifemora
Netelia sp.
Patrocloides montanus
Pimpla aequalis
Pristomerus sp.
Pristomerus spinator

Reference

4.16

Iseropus stercorator orgyiae
Itoplectis conquisator

Country

325

Species
HYMENOPTERA

Trichogramma chilotraeae
Trichogramma deion
Trichogramma evanescens
Trichogramma exiguum
Trichogramma japonicum
Trichogramma minutum
Trichogramma platneri

Country

Reference

USA
Canada
USA
USA

Mitchell 1961
Harcourt 1963
Chamberlin & Kok 1986
Chamberlin & Kok 1986

USA

Oatman & Platner 1969; Oatman et al. 1983a

Guatamala
USA

Johnson 1983; Navasero & Oatman 1989
Martin et al. 1984

India
Brazil
USA
India
Brazil
USA
USA
USA
India
USA
Brazil
USA

Manjunath 1972
Hohmann et al. 1988b
Hoffmann et al. 1990
Manjunath 1972
Hohmann et al. 1988a,b
Hoffmann et al. 1990
Oatman et al. 1968
Martin et al. 1982; Roltsch & Mayse 1983; Campbell et al. 1991
Manjunath 1972
McKinney 1944; Marston & Ertle 1973; Manweiler 1986
Hohmann et al. 1988a,b
Manweiler 1986

Biological Control of Insect Pests: Southeast Asian Prospects

ICHNEUMONIDAE (contÕd)
Pterocormus gestuosus
Stenichneumon culpator
cincticornis
Vulgichneumon brevicinctor
PTEROMALIDAE
Pediobius nr sexdentatus
SCELIONIDAE
Telenomus solitus
Telenomus sp.
TRICHOGRAMMATIDAE
Trichogramma australicum
Trichogramma brevicapillum

326

Table 4.16.1 (contÕd) Parasitoids of Trichoplusia ni

Table 4.16.1 (contÕd) Parasitoids of Trichoplusia ni
Species
HYMENOPTERA

Country

Reference

USA
USA
USA
Brazil
USA

Oatman 1966; Hoffmann et al. 1975, 1990; Martin et al. 1976b; Ehler 1977a;
Oatman & Platner 1978; Butler & Lopez 1980; Oatman et al. 1983a
Ehler & van den Bosch 1974
van den Bosch & Hagen 1966; Harding 1976; Jones 1982
Hohmann et al. 1988b
Hoffmann et al. 1990

USA
USA

Aldrich 1927
Manjunath 1972

Eucelatoria armigera

USA
USA
USA
Malaysia
USA
India
USA
Canada
USA
USA

Eucelatoria nr armigera

USA

Butler 1958b
Harding 1976
van den Bosch & Hagen 1966
Jayanth & Nagarkatti 1984
Harding 1976
Manjunath 1972
van den Bosch & Hagen 1966; Chamberlin & Kok 1986
Harcourt 1963
Schaffner & Griswold 1934
Butler 1958b, Clancy 1969, Henneberry et al. 1991, Oatman 1966, Oatman &
Platner 1969, van den Bosch & Hagen 1966
Harding 1976, Henneberry et al. 1991

TRICHOGRAMMATIDAE (contÕd)
Trichogramma pretiosum
Trichogramma semifumatum
Trichogramma spp.
Trichogramma thalense

DIPTERA

Trichoplusia ni

Chetogena sp.
Compsilura concinnata

4.16

SARCOPHAGIDAE
Sacrodexia sternodontis
Senotainia sp.
TACHINIDAE
Achaetoneura archippivora
Aplomya theclarum
Archytas californiae
Bessa remota
Carcelia sp.

327

Species
DIPTERA

328

Table 4.16.1 (contÕd) Parasitoids of Trichoplusia ni
Reference

TACHINIDAE (contÕd)
Eucelatoria rubentis
Euphorocera spp.
Euphorocera tachinomoides
Hypantrophaga sp.
Lespesia achaetoneura
Lespesia archippivora
Lespesia sp.
Madremyia saundersii
Metachaeta (=Periscepsia) helymus
Phorocera sp.
Phryxe vulgaris
Sarcophaga spp.
Schizocerophaga leibyi
Siphona plusiae
Siphona sp.
Voria edentata
Voria ruralis

USA
USA
USA
USA
USA
USA
USA
USA
USA
USA
USA
USA
USA
USA
USA
India
USA

Winthemia nr montana
Winthemia quadripustulala

USA
USA

Watson et al. 1966
Harding 1976
Oatman 1966; Harding 1976
Harding 1976
Oatman 1966
Watson et al. 1966; Oatman & Platner 1969; Henneberry et al. 1991
Clancy 1969; Chamberlin & Kok 1986
Oatman 1966; Oatman & Platner 1969
Clancy 1969
Sutherland 1966
Sutherland 1966
van den Bosch & Hagen 1966
Harding 1976
Clancy 1969; Harding 1976; Henneberry et al. 1991
Oatman & Platner 1969; Oatman et al. 1983a
Manjunath 1972
McKinney 1944; Butler 1958b; Pimentel 1961; van den Bosch & Hagen 1966;
Oatman 1966; Clancy 1969; Oatman & Platner 1969; Elsey & Rabb 1970a;
Ehler & van den Bosch 1974; Wall & Berberet 1975; Harding 1976; Ehler 1977a;
Jones 1982; Latheef & Irwin 1983; Oatman et al. 1983a; Chamberlin & Kok
1986; Gordon et al. 1987; Henneberry et al. 1991; Biever et al. 1992
Harding 1976
Allen 1925

Biological Control of Insect Pests: Southeast Asian Prospects

Country

Table 4.16.1 (contÕd) Parasitoids of Trichoplusia ni
Species
DIPTERA
TACHINIDAE (contÕd)
Winthemia rufopicta
Winthemia spp.
Zenilla blanda blanda

Country

Reference

USA
USA
USA

Chamberlin & Kok 1986
Elsey & Rabb 1970b
West 1925

4.16
Trichoplusia ni
329

330

Table 4.16.2

Some predators of Trichoplusia ni in USA

Species
DERMAPTERA

Strandberg 1981a,b
Tawfik et al. 1972

HEMIPTERA
ANTHOCORIDAE
Orius insidiosus
Orius tristicolor
LYGAEIDAE
Geocoris pallens
Geocoris punctipes
NABIDAE
Nabis alternatus
Nabis americoferus
Nabis roseipennis
PENTATOMIDAE
Alcaeorrhynchus grandis
Euthyrhynchus floridanus

Lingren et al. 1978
Ehler et al. 1973; Ehler & van den Bosch 1974; Ehler 1977a; Wilson & Gutierrez 1980;
Jones 1982; Jones et al. 1983
van den Bosch & Hagen 1966; Ehler et al. 1973; Ehler & van den Bosch 1974; Ehler
1977a; Wilson & Gutierrez 1980
van den Bosch & Hagen 1966; Barry 1973; Barry et al. 1974; Walker & Turnipseed
1976; Wilson & Gutierrez 1980; Reed et al. 1984
van den Bosch & Hagen 1966; Barry 1973; Barry et al. 1974
van den Bosch & Hagen 1966; Ehler et al. 1973; Ehler & van den Bosch 1974; Ehler
1977a; Stoltz and Stern 1979; Wilson & Gutierrez 1980
Reed et al. 1984
McLain 1979
McLain 1979

Biological Control of Insect Pests: Southeast Asian Prospects

LABIDURIDAE
Labidura riparia

Reference

Table 4.16.2 (contÕd) Some predators of Trichoplusia ni in USA
Species

Reference

Podisus maculiventris

Hayslip et al. 1953; Ignoffo et al. 1977; Marston et al. 1978; Richman & Whitcomb
1978; McLain 1979; Biever et al. 1982
Richman 1977

Stiretrus anchorago

HEMIPTERA
van den Bosch & Hagen 1966
van den Bosch & Hagen 1966
van den Bosch & Hagen 1966
Greene & Shepard 1974
Hayslip et al. 1953
Whitcomb and Bell 1964
van den Bosch & Hagen 1966
van den Bosch & Hagen 1966

4.16

REDUVIIDAE
Sinea complexa
Sinea confusa
Sinea diadema
Sycanus indagator
Zelus bilobus
Zelus exsaguis
Zelus renardii
Zelus tetracanthus

NEUROPTERA

HEMEROBIIDAE
Hemerobius spp.

Ru et al. 1975
van den Bosch & Hagen 1966
Ru et al. 1976
Pimentel 1961
van den Bosch & Hagen 1966; Barry 1973; Barry et al. 1974; Ehler & van den Bosch
1974; Ehler 1977a; Wilson & Gutierrez 1980

Trichoplusia ni

CHRYSOPIDAE
Chrysopa lanata
Chrysopa nigricornis
Chrysopa rufilabris
Chrysopa spp.
Chrysoperla carnea

van den Bosch & Hagen 1966

331

Species
COLEOPTERA

Reference

van den Bosch & Hagen 1966
McKinney 1944
Reed et al. 1984

COLEOPTERA
COCCINELLIDAE
Ceratomegilla maculata fuscilabris
Coccinella novemnotata franciscana
Coccinella transversoguttata
Cycloneda sanguinea
Hippodamia convergens
Hippodamia parenthesis
Hippodamia quinquesignata punctulata
Olla v-nigrum
Paranaemia vittegera
MELYRIDAE
Collops marginellus
Collops vittatus

Pimentel 1961
van den Bosch & Hagen 1966
Pimentel 1961
van den Bosch & Hagen 1966; Jones 1982
van den Bosch & Hagen 1966; Jones 1982; Jones et al. 1983
van den Bosch & Hagen 1966
van den Bosch & Hagen 1966
van den Bosch & Hagen 1966
van den Bosch & Hagen 1966
van den Bosch & Hagen 1966
van den Bosch & Hagen 1966

DIPTERA
SYRPHIDAE
Mesograpta marginata
Sphaerophoria cylindrica
Sphaerophoria menthastri

Pimentel 1961
Pimentel 1961
Pimentel 1961

Biological Control of Insect Pests: Southeast Asian Prospects

CARABIDAE
Calosoma affine
Calosoma peregrinator
Labia analis

332

Table 4.16.2 (contÕd) Some predators of Trichoplusia ni in USA

Table 4.16.2 (contÕd) Some predators of Trichoplusia ni in USA
Species
DIPTERA
SYRPHIDAE (contÕd)
Sphaerophoria robusta
Several species

Reference

Pimentel 1961
van den Bosch & Hagen 1966

HYMENOPTERA
VESPIDAE
Mischocyttarus flavitarsis
Polistes apachus
Polistes metricus
Vespula pensylvanica

Bernays & Montelor 1989
Cornelius 1993
van den Bosch & Hagen 1966; Hunt 1984; Greenstone & Hunt 1993
Warren 1990
Lockley et al. 1989
Reed et al. 1984; Lockley & Young 1988
Reed et al. 1984
Edwards & Jackson 1993, 1994
Edwards & Jackson 1993, 1994

BIRDS
Dendroica palmarum
Passerculus sandwichensis

Strandberg 1981a
Strandberg 1981a

Trichoplusia ni

Misumena ratia
Oxyopes salticus
Pardosa spp.
Phidippus regius
Phidippus spp.

4.16

SPIDERS

333

334

Biological Control of Insect Pests: Southeast Asian Prospects

More than 20 species of microorganism (viruses, bacteria, protozoa and
fungi) are associated with T. ni, most of them isolated from field
populations, but some from laboratory cultures. All were initially isolated
from larvae, although at least one species of each group has also been
isolated from pupae, adults and even eggs (Table 4.16.3). Details concerning
the causative agents and the symptoms they produce are given by Ignoffo
and Hostetter (1984). Many papers have been published in recent years to
add details to the records in Table 4.16.3, especially in the field of viruses,
but also adding to the range of other pathogens, such as a rickettsia-like
organism (Browning et al. 1982). Naturally-occurring virus infection has
been found to be a major mortality factor of T. ni larvae in the field,
particularly late in the season when populations are high. A singleembedded nuclear polyhedrosis has been mass produced and applied with
excellent results by a number of authors to several crops (Ignoffo and
Hostetter 1984).
Table 4.16.3

VIRUSES

Major pathogens of Trichoplusia ni (Ignoffo and Hostetter
1984)
single-embedded nuclear polyhedrosis
multiple-embedded nuclear polyhedrosis
granulosis
cytoplasmic polyhedrosis

BACTERIA

Bacillus thuringiensis
Serratia marcescens

PROTOZOA

Nosema trichoplusiae
Thelohania sp. nr. diazoma

FUNGI

Aspergillus flavus
Beauveria bassiana
Entomopthora gammae
Entomopthora sphaerosperma
Metarrhizium anisopliae
Metarrhizium brunneum
Nomuraea rileyi

4.16

Trichoplusia ni

335

Introductions for biological control of T. ni
There do not appear to have been any introductions of natural enemies
specifically for cabbage looper, but rather for the complex of lepidopterous
larvae with which it is almost always associated. Examples of such
introductions are shown in Table 4.16.4.
BRAZIL
The natural enemies of T. ni larvae on cotton at 3 sites in Paran‡ Province
included the fungus, Nomuraea rileyi (which killed 76% of larvae at one
site), a virus disease (that killed up to 47% at two sites), the parasitoids
Copidosoma truncatellum (reared from about 5% of larvae at 2 sites) and
Microcharops bimaculata (reared from 7.5% of larvae at 1 site) and the
fungus Entomopthora sp. (which killed 2.5% of larvae at 1 site) (Silva and
Santos 1980). The natural enemies of T. ni on cotton in Mato Grosso are
discussed by Bleicher et al. (1985) and on tomato in Sao Paulo by Gravena
(1984).
CARIBBEAN
T. ni is usually a minor pest of Brassicaceae, although outbreaks
occasionally cause serious defoliation of crops. A large number of predators
attack larvae, in addition to the parasitoids that are listed in Table 4.16.5.

336

Table 4.16.4

Introductions for the biological control of lepidopterous larvae including Trichoplusia ni

Species
HYMENOPTERA

From

When

Cape Verde Is
Barbados, Jamaica
USA
USA

1981
1969
1981
1981

+
+
?
?

Egypt

USA

1983

Ð

Lima & van Harten 1985
Alam 1992
McCutcheon et al. 1983
Shepard et al. 1983;
Norlund & Lewis 1985
McCutcheon & Harrison 1987

India

Barbados

pre 1985

+

Alam 1992

Japan

USA

pre 1983

*

Parkman et al. 1983

BRACONIDAE
Cotesia marginiventris
Cotesia plutellae
India
Cotesia ruficrus
Australia
Microplitis (= Microgaster) demolitor Australia
Microgaster rufiventris
ENCYRTIDAE
Copidosoma floridanum
EULOPHIDAE
Pediobius nr facialis
* no indication of field release

Result

Reference

Biological Control of Insect Pests: Southeast Asian Prospects

To

4.16

Table 4.16.5

Trichoplusia ni

337

Parasitoids and a fungus attacking T. ni in the Caribbean
(Alam 1992)

Species
BRACONIDAE
Cotesia sp. (glomerata group)
Cotesia plutellae
Glyptapanteles sp. (vitripennis group)
CHALCIDIDAE
Brachymeria sp.
Brachymeria ovata
ENCYRTIDAE
Copidosoma sp.
Copidosoma floridanum
Copidosoma (truncatellum group)
EULOPHIDAE
Euplectrus platyhypenae
TACHINIDAE
Winthemia nr pinguis
and Winthemia nr pyrrhopyga
Winthemia sp.
ENTOMOPHTHORALES

% Parasitisation
Jamaica
Barbados
20.0
29.6Ð70.0

3.5
0.5Ð 2.0

2.4
0.5
12.5
0.5Ð5.0
25.8
4.2

20.2Ð35.8
1 specimen only
9.5Ð80.0

NORTH AMERICA
The cabbage looper is a widespread and often highly destructive pest of
cabbage and other Brassicaceae southwards in North America, from about
the level of Ontario in Canada. Throughout this range it is associated with up
to about a dozen other species of Lepidoptera. It is third in importance to the
cabbage white butterfly, Pieris rapae, and the diamondback moth Plutella
xylostella in Canada (Harcourt 1963) and New York State (Pimentel 1961)
and about as important as these in southwestern USA (Oatman and Platner
1969; Reid and Cuthbert 1957).
In Ontario the encyrtid wasp Copidosoma truncatellum is the most
important parasitoid and populations are frequently destroyed by a
polyhedral virus (Harcourt 1963). In New York State a polyhedral virus
(40% mortality) was the major factor affecting T. ni populations in 1957 but
less important (7%) in 1958 when predators (especially spiders), caused 2%
to 3% mortality (Pimentel 1961). In northwestern USA up to 14% of T. ni
larvae were parasitised on cabbage by the tachinid fly, Voria ruralis (Biever
et al. 1992). In southern California up to 39% (av. 7.8%) of T. ni eggs were
parasitised by Trichogramma pretiosum, which was also reared from
Plutella xylostella eggs. Twelve species of parasitoid were reared from T. ni

338

Biological Control of Insect Pests: Southeast Asian Prospects

larvae and pupae, 7 of which were Hymenoptera and 5 Diptera (Table
4.16.1). These produced an average of 38.9% mortality, with a maximum of
66.7% in late autumn. The tachinid, Voria ruralis, was the dominant
parasitoid, especially during autumn and winter months. The ichneumon,
Hyposoter exiguae, and the encyrtid, Copidosoma truncatellum, occurred
most commonly during the summer and autumn months, when the latter was
associated with a nuclear polyhedrosis virus. Together (and particularly the
virus) they were responsible for most of the 60% larval mortality. Pupal
mortality was low (2.0%) and was due to the pteromalid Pediobius
sexdentatus (Oatman and Platner 1969). Also in southern California, Clancy
(1969) reared 5 wasps and 5 tachinid flies (Table 4.16.1) from T. ni larvae
collected from annual weeds (Malva sp., Chenopodium sp.), mustard, tree
tobacco (Nicotiana glauca) and lucerne. The fly, Voria ruralis, was the most
abundant parasitoid in autumn and winter and Copidosoma truncatellum the
most important wasp, the total parasitisation from all species ranging from
29.5% to 41.1%. A nuclear polyhedrosis virus killed 70.9% of larvae
collected in summer from weeds and 63.8% from lucerne (Table 4.16.6).
The mortality caused by the various natural enemies varied according to the
season and host plant.
Henneberry et al. (1991) recorded 12 species of parasitoid from larvae of
the loopers T. ni and Autographa californica on lettuce, lucerne, sugarbeet
and cotton in southern California. Of these, the braconid Microgaster
brassicae (30%) Voria ruralis (23%) and Copidosoma truncatellum (23%)
were the most abundant, with parasitisation rates ranging from 0% to 91.8%
according to season and crop. Average mortality from viral infection ranged
between 0.6% and 7.2%, also depending upon the crop.
Thirteen parasitoid species reared from T. ni on tomatoes in southern
California (Table 4.16.1) caused mean parasitisation rates of larvae of 51.4%
and 70.5% and of eggs of 24.6% and 53.4% respectively in two successive
years. Hyposoter exiguae and Copidosoma truncatellum were the most
abundant larval parasitoids and Trichogramma pretiosum the most
important species attacking eggs. The data on population trends and
percentage parasitisation suggested that there was a density-dependent
relationship between T. ni and its parasite complex on tomato (Oatman et al.
1983a).
In Arizona, the most abundant parasitoid of T. ni larvae collected from
weeds and cultivated crops was Voria ruralis, which was present throughout
the year, with peak abundance (up to 100%) in late autumn and winter
(McKinney 1944; Butler 1958b; Brubaker 1968). Five wasps and 1 tachinid
fly were reared from larvae, 1 tachinid from pupae and Trichogramma

Table 4.16.6

Month

No reared

Natural enemies of Trichoplusia ni larvae in southern California from weed hosts, lucerne and tree tobacco
(Nicotiana glauca) (from Clancy 1969)
% pupating
virus

all parasites

1966
63.8
57.3
70.9
44.3
31.6
37.8
25.9
39.1

34.0
30.1
24.2
49.6
49.7
20.2
26.5
56.3

138
63
7
12
120
2100

31.9
61.9
14.3
41.7
60.0
22.0

16.7
11.1
28.6
33.3
15.8
42.5

51.4
27.0
57.1
25.0
24.2
35.2

149

6.7

63.8

29.5

11.9

479

47.0

10.6
4.9
5.5
25.4
30.0
10.5
16.0
16.6

34.1
11.1

0.7

16.7
15.9
14.3

42.9

13.3

5.8
2.8

0.7

2.0

Collections from tree tobacco, Nicotiana glauca
41.1
21.5
1.0
11.7

6.9

25.0
16.7
13.1

0.7

7.4
7.0
4.6
1.8

1.7
5.9

Collections from lucerne
6.0
20.8

339

2.1
12.6
4.6
6.1
18.6
41.9
47.5
4.6

Collections from annual weeds
4.3
11.7
7.7
9.8
4.0
10.1
16.1
6.4
12.4
9.3
6.4
3.4
9.3
1.2
38.4
0.7

all other
Hymenoptera

Trichoplusia ni

94
286
327
280
193
267
162
151

Copidosoma
truncatellum

4.16

May
June
July
Aug
Sept
Oct
Nov
Dec
1967
Jan
Feb
March
April
May
Totals

% killed by
Voria ruralis
all other
Tachinidae

340

Biological Control of Insect Pests: Southeast Asian Prospects

minutum from eggs collected from lettuce. In addition, the carabid beetle,
Calosoma peregrinator, fed readily on T. ni larvae (McKinney 1944).
A study in southern Texas of the loopers T. ni and Chrysodeixis
includens on a range of host plants revealed high levels (58% to 71%) of
mortality of larvae and pupae by 29 parasitoid species (Table 4.16.1) during
all but 4 months of the year, all of which existed at rather low levels (Harding
1976).
Turning to cotton in southern California, T. ni is a secondary pest and
there is good evidence that natural enemies, in particular several predators,
are mainly responsible for its generally low pest status. The 4 major
predators there are larvae of the green lacewing, Chrysoperla carnea (which
consume eggs and larvae) adults and nymphs of the bugs Geocoris pallens
and Orius tristicolor (which prey upon eggs and small larvae) and adults and
nymphs of the bug Nabis americoferus (which prey upon larvae of all sizes).
Spiders, mantids, carabids, vespids and reduviid bugs are among predators
that are also present in smaller numbers (Ehler and van den Bosch 1974;
Ehler 1977a).
Eleven species of parasitoid have been reported from T. ni on cotton, of
which the following are most important, although their combined effect is
far less than that of the predators: Trichogramma semifumatum (an egg
parasitoid), Cotesia marginiventris, Hyposoter exiguae and Microgaster
brassicae (which attack small larvae and kill hosts when of medium size),
Copidosoma truncatellum (an egg-larval parasitoid, which emerges from
large larvae or prepupae), Chelonus texanus (an egg-larval parasitoid which
kills medium sized hosts), Voria ruralis (which lays eggs on medium sized
larvae and kills large larvae or prepupae), and Patrocloides montanus (a
larval-pupal parasitoid which usually oviposits in large larvae). Copidosoma
truncatellum is polyembryonic and Voria ruralis is often gregarious (Ehler
and van den Bosch 1974).
A nuclear polyhedrosis virus was the only pathogen shown to cause T. ni
mortality, particularly late in the season at peak density of T. ni larvae, when
levels of 50 to 60% mortality have been observed.
All of the predators mentioned above are widely polyphagous. The first 4
parasitoids listed above had a restricted host range and the last 4 were host
specific in the cotton ecosystem.
Disappearance of eggs and small larvae, assumed to be due to predation,
was consistently the major mortality factor. Parasitisation of larvae by any
parasitoid seldom exceeded 30%, the exception being that by Copidosoma
truncatellum which often reached 50 to 75%. Detailed life table studies of
T. ni on cotton were reported by Ehler (1977a).

4.16

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341

It was suggested that the temporary nature of the cotton crop, and
sufficient time each season for only 3 generations of the host, left parasitoids
insufficient time to build up adequate numbers to thoroughly exploit T. ni
populations. Also, the low density of T. ni due to the intense activity of
predators early in each generation, impairs successful search by adult
parasitoids, particularly those that are host specific (Ehler and van den
Bosch 1974; Ehler 1977a).
If the reader is perhaps, somewhat uncertain of what conclusions to draw
from the extensive data in the foregoing accounts, the studies of Jones et al.
(1983a), dealing with the impact of parasitoids and predators on T. ni
populations on celery in California, provide valuable insights. He concludes
that naturally-occuring entomophagous arthropods do, indeed cause
irreplaceable mortality of T. ni and that they should be considered a key part
of any Integrated Pest Management program for the crop. Although
parasitoids (principally Trichogramma spp., Copidosoma truncatellum and
Voria ruralis, but also Hyposoter exiguae, Microgaster brassicae, Cotesia
marginiventris and Chelonus insularis) can explain, for this crop, most
mortality of eggs and of both small and medium sized larvae, it should not be
concluded that predators are unimportant. It is possible that the additional
small amount of mortality due to parasitoids is that required to suppress pest
density to just below damaging levels. The parasitoids involved have a more
restricted host range than the 2 most important groups of egg predators in
celery, namely Coccinellidae (Hippodamia convergens and Cycloneda
sanguinea) and Anthocoridae (Orius tristicolor) which are both widely
polyphagous.

Major parasitoid species
Laboratory and field studies have been published dealing with many of the
parasitoids listed in Table 4.16.1. Several of these species that have emerged
as worthy of serious consideration as biological control agents are dealt with
below.

Copidosoma truncatellum Hym.: Encyrtidae
Females of this small wasp oviposit in T. ni eggs of all ages and
polyembryonic development occurs after hatching of the host larva. The host
is later killed in the mature larval or prepupal stage. Either one or two eggs
are inserted in a host egg during oviposition but, if the latter, generally only
one parasitoid egg is fertile. Offspring are unisexual although, when 2 fertile
eggs are laid, both males and females may emerge, an average of 1526 wasps
per parasitised T. ni (Leiby 1926, 1929).

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Biological Control of Insect Pests: Southeast Asian Prospects

Young female wasps are better than old at searching for eggs. At 14.8¡C
and 28.9¡C the period from egg to first adult emergence was 122.9 and 22.4
days respectively and the duration of a generation was 162.7 and 31.2 days.
The life span of a female wasp fed on a diet of 20% levulose solution was
30.3 days at 14.8¡C and 28 days at 35.6¡C. Synchronisation of the parasite to
T. ni was found to be nearly perfect at 25¡C. At some temperatures the
parasitoid killed host eggs and at others, larvae before the 5th instar: this
resulted in the death of the contained parasitoids (Stoner and Weeks 1974,
1976).
T. ni larvae parasitised by C. truncatellum consumed 35% more food and
had a 30% higher maximum weight than unparasitised larvae, which raises a
concern for at least the short-term effect of biological control (Hunter and
Stoner 1975). The mortality caused by C. truncatellum appeared to be
density related (Ehler and van den Bosch 1974). Average parasitisation of
T. ni eggs in the laboratory was 55.3% (McPherson 1993). However, the
maximum recorded in cotton fields in southern California was 2.5% (Ehler
1977a).
C. truncatellum has been reported from larvae of Noctuidae,
Geometridae, Cossidae and Coleophoridae (Peck 1963). However, Ehler
(1977a) points out that it has been reported only from T. ni in Californian
cotton (van den Bosch and Hagen 1966; Ehler and van den Bosch 1974) and
that it appears to be specific in this environment. C. truncatellum has a
Holarctic distribution, but its native home is not clear (Peck 1963).

Cotesia marginiventris Hym.: Braconidae
More eggs were laid by this generalist larval parasitoid in 2-day-old T. ni
larvae than in younger or older larvae. The minimum development period
from oviposition to adult emergence from the host was 6 days (Boling and
Pitre 1970). Females were significantly more responsive to host odors after
brief contact with host larval frass or host-damaged cotton leaves (Turlings
et al. 1989). C. marginiventris from T. ni and 4 other species of noctuid
larvae were found to contain a non-occluded, filamentous, baculo-like virus
(Styer et al. 1987).

Hyposoter exiguae Hym.: Ichneumonidae
This solitary endoparasitoid is one of 3 main parasitoids of T. ni on cotton
(Ehler 1977a) and other crops in California and has a modest ability to
distinguish unparasitised from parasitised hosts (Beegle and Oatman 1975;
Browning and Oatman 1984). The female prefers to oviposit in late 1st or
2nd instar T. ni larvae, although all instars are acceptable. When early instars
are chosen, the host larvae generally die during the 3rd or 4th instar (Ehler
1977a). Parasites commencing their development in hosts 1-day-old took

4.16

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343

13.85 days for development, whereas those starting in 10-day-old larvae
required only 7.4 days (Smilowitz and Iwantsch 1975; Jowyk and Smilowitz
1978). The influence of temperature on development is discussed by
Browning and Oatman (1981). Weight gain of T. ni larvae is severely
depressed following parasitisation (Smilowitz and Iwantsch 1973; Iwantsch
and Smilowitz 1975; Thompson 1982).
Successful parasitisation of T. ni larvae was correlated with host age,
ranging from 83% to 88% in 1st, 2nd and early 3rd instars and declining in
older larvae to 27% in mid 5th instar. Females deposited an average of 2.3
eggs in 1st instar and 1.3 eggs in 2nd instar larvae, superparasitisation
declining in later instars (Smilowitz and Iwantsch 1975).
As many parasitoid eggs were laid in virus-infected host larvae as in
healthy larvae. Of those females that oviposited in infected hosts, 60%
transmitted infective doses of virus to 6% of healthy hosts subsequently
exposed to them. Of female parasitoids that developed in virus-infected hosts,
90% transmitted infective doses to an average of 21% healthy host larvae
exposed to them. T. ni larvae parasitised by H. exiguae required twice the
dosage of virus for infection and the parasitoid completed development before
the host larvae died (Beegle and Oatman 1974, 1975). Washed H. exiguae
eggs do not develop to maturity on injection into T. ni larvae unless virus or
fluid from the parasite oviduct is added (Vinson and Stoltz 1986). Because the
effects of parasitisation by H. exiguae are observable within 24 hours of
oviposition and prior to hatching of the parasitoid, it is probable that the
H. exiguae-associated virus, rather than the developing parasitoid itself, is
responsible for the metabolic changes produced (Thompson 1986).

Microgaster brassicae Hym.: Braconidae
This solitary endoparasitoid is an important mortality factor of T. ni larvae
on both cabbage and cotton. The female usually oviposits in 1st and 2nd
instar host larvae and the fully-grown parasite larva leaves through the
lateral abdominal wall of the medium-sized host larvae to spin a greenish or
grayish cocoon. The host larva often survives for a few days after parasitoid
emergence (Ehler 1977a). Duration of parasitoid development from egg to
adult ranges from 17.7 days at 21.2¡C to 10.7 days at 32.2¡C. Adult
longevity ranged from 55.5 days at 15.5¡C to 12.9 days at 32.2¡C for males
and from 76.4 days to 13.7 days for females. Total progeny is largest at
21.1¡C, averaging 73.2 offspring per female. Rearing methods, mating,
searching, ovipositional behaviour and interactions with other parasitoid
species have been described (Browning and Oatman 1984, 1985).
M. brassicae is native to North America and appears to be specific to
T. ni in cotton, although it is also known from the alfalfa looper Autographa
californica on lucerne (Ehler 1977a).

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Biological Control of Insect Pests: Southeast Asian Prospects

Trichogramma minutum Hym.: Trichogrammatidae
When attacking eggs of T. ni, females reared from T. ni eggs were more
fecund than those from Sitotroga cerealella and searched over larger areas
for hosts (Marston and Ertle 1973). At 27¡C and 50% RH T. minutum
populations increased more rapidly than those of T. platneri. T. minutum
does not feed from the host egg nor does it superparasitise eggs even when
hosts are in short supply (Manweiler 1986).

Trichogramma platneri Hym.: Trichogrammatidae
After ovipositing in a host egg, females pierce it again and feed from
exuding droplets of fluid. T. platneri superparasitised hosts when eggs were
scarce. At about 27¡C and 50% RH, T. platneri populations increased more
slowly than those of T. minutum (Manweiler 1986). The maximum number
of progeny bred from a single T. ni egg was 3 and 73% of male progeny
emerged from the first eggs exposed to a female. Honey was shown to
increase parasitoid longevity (Hohmann et al. 1988a, b).

Trichogramma pretiosum Hym.: Trichogrammatidae
This species can be reared from egg to adult in vitro (Hoffman et al. 1975).
Females have a preference for young T. ni eggs, although eggs of all ages are
accepted (Godin and Boivin 1994). A local Missouri, USA strain of
T. pretiosum successfully parasitised T. ni eggs in field experiments, large
host eggs producing more adults than small ones and these adults were more
fecund and active than those from small eggs (Boldt et al. 1973). A Texan
strain was effective in the laboratory against T. ni eggs, but not in the field. It
was able to develop in the same T. ni egg as Trichogramma evanescens if
eggs of both parasitoids were deposited on the same day (Parker and Pinnell
1972, 1974).
In Texas, naturally occurring T. pretiosum assisted in controlling T. ni on
cotton in field cages (Lingren et al. 1978). In southern California, average
parasitisation of T. ni eggs ranged from 3 to 47% in tomatoes when releases
were made at the rate of 200 000 to 318 000 adult wasps per 0.4 ha (Oatman
and Platner 1978). In Florida 3 releases 3 days apart of T. pretiosum at about
378 000/acre/release in a 1 acre field cage containing 7 crops resulted in
substantial parasitisation of T. ni eggs and in suppression of larvae (Martin et
al. 1976b). Laboratory and field cage studies with T. pretiosum were also
carried out in California (Ashley et al. 1974) where female parasitoids
produced from T. ni eggs were larger, more fecund and lived longer than
those from artificial rearing hosts (Plodia interpunctella and Sitotroga
cerealella) (Bai et al. 1992).

4.16

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345

Voria ruralis Dip.: Tachinidae
Adults mate soon after eclosion and oviposition commences about 9 days
later. Eggs laid on the host surface hatch within a minute and young larvae
penetrate the cuticle and enter a muscle fibre. After about 3 days at 24¡C the
larva pierces a hole in the dorsal wall of the host abdomen through which it
inserts its posterior spiracles into the air. After rapid growth of the parasitoid,
the host dies and the parasitoid larva pupates within the host integument
(Thompson 1915; Brubaker 1968). When V. ruralis oviposits on 1st instars,
development is slower and mortality higher than in later instars, except the
late 5th instar. Development was rarely completed when eggs were laid on
5th instars, unless they were laid on newly moulted individuals. Females laid
an average of 310 eggs (Elsey and Rabb 1970a). Development time from egg
to puparium ranged from 5.4 to 12 days, depending upon the temperature,
and for the pupa 7 to 8 days at 24¡C. Time from egg to adult varied from 19.4
days at 20¡C to 10.7 days at 30¡C (Brubaker 1968; Jackson et al. 1969).
Parasitisation by V. ruralis causes large larvae to eat less than normal (an
average of 47% reduction (Soo Hoo and Seay 1972). Up to 85%
parasitisation was observed in field cages, depending upon the numbers of
mated V. ruralis released, with significant superparasitism at high parasitoid
densities (Soo Hoo et al. 1974).
V. ruralis is one of 3 major parasitoids of T. ni on crops in Florida (Martin
et al. 1982) and cotton in Arizona (Werner and Butler 1979) but was present
only to the extent of 0 to 0.1% in larvae on lucerne in New Mexico (Gordon
et al. 1987). In northwestern USA, it was the only parasitoid recovered and
occurred in 0 to 14% of T. ni larvae (Biever et al. 1992). In Virginia,
V. ruralis was present in 27% of larvae in 1981 and 17% in 1982
(Chamberlin and Kok 1986).
V. ruralis can survive, develop in, and emerge from virus infected larvae.
However, it does not act as a vector, except occasionally as a mechanical one
under very restricted conditions (Vail 1981).
V. ruralis is a widespread parasite and has been recorded as far north as
Finland and as far south as Trinidad. It has been recorded from a range of
Lepidoptera. In the United States it is known mainly from larvae of various
Noctuidae, especially T. ni, but less frequently from the beet armyworm,
Spodoptera exigua, and other associated species (Jackson et al. 1969; Ehler
1977a). Ehler and van den Bosch (1974) considered V. ruralis to be host
specific to T. ni in Californian cotton.

346

Biological Control of Insect Pests: Southeast Asian Prospects

Comment
It has not been feasible, except for a rather more comprehensive cover of
parasitoids, to include any but the most relevant of the 2000 or so references
to T. ni in the literature. Further details can be accessed via the bibliographies
of Sutherland and Sutherland (1972, 1984) for earlier publications and via
Commonwealth Agricultural Bureau Abstracts and Lingren and Green
(1984) for much of the more recent literature.
Although T. ni is often regarded as a secondary pest of crops in its native
North America, damaging numbers, nevertheless, occur from time to time,
particularly when its natural enemies are killed or suppressed by broad
spectrum insecticides applied for associated primary pests. Predators are
often claimed to be more important than parasitoids in maintaining T. ni at
sub-economic levels.
Regrettably most, if not all, of the major predators involved lack the
degree of specificity nowadays considered necessary for introduction as
classical biological control agents. For this reason, further consideration is
restricted to the potential of parasitoids and viruses. Far more is known from
southern California than elsewhere of the parasitoid species present and their
interactions. The following discussion is thus somewhat geographically
biased and it should be borne in mind that additional species in other regions
may well have desirable characteristics, especially for their respective
climatic conditions (see later).
In addition to the egg parasitoids (e.g. Trichogramma pretiosum and
T. platneri), there are at least 4 other parasitoids worthy of serious
consideration (Copidosoma truncatellum, Hyposoter exiguae, Microgaster
brassicae (Hymenoptera) and Voria ruralis (Tachinidae)).
If host specificity considerations permit clearance of these species for
introduction to a new area, a decision must still be taken on which, if not all,
to establish. It may be useful, therefore, to review (and extend) the
information presented earlier on their attributes and interactions.
Copidosoma truncatellum oviposits into the host egg, but hatches in the
larva and takes about 36 days to develop to adult, so it is present throughout
the entire larval period of its host. Microgaster brassicae oviposits in 1st and
2nd instar T. ni larvae and requires about 14 days to develop to adult. The
mature 3rd instar parasitoid larva emerges from late 3rd or early 4th instar
hosts after feeding for about 9 days. Hyposoter exiguae commonly oviposits
into late 1st instar T. ni and emerges from late 3rd or early 4th instar hosts. It
requires about 16 days from egg to adult at 25¡C, the egg-larval period
averaging about 10 days. Voria ruralis requires about 13 days from egg to
adult. It will oviposit on all host instars, but development in most successful

4.16

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347

when 2nd or 3rd instars are parasitised. Larval development is then
completed by the end of the 5th host larval instar (Browning and Oatman
1984). As a result of overlapping life cycles, two or more of these 4 species
could inhabit a host larvae simultaneously, unless a species was able to
discriminate between parasitised and unparasitised hosts.
As many as 10 adult Voria ruralis may emerge from a single host larva.
When limited numbers of hosts are present, a female lays more than one egg
on each larva. Excess eggs may result in premature mortality of the host
larva and any immature parasitoids already within it. External oviposition
probably prevents the ovipositing female from receiving sensory
information about the presence of parasite eggs or larvae already within the
host; and V. ruralis females will continue to oviposit as long as the host larva
reacts with any movement.
Copidosoma truncatellum parasitises host eggs of all ages following
antennal drumming and ovipositor insertion. Females are apparently able to
discriminate between unparasitised eggs and those parasitised by other
C. truncatellum females. Microgaster brassicae females insert their
ovipositors in all host larvae whether or not parasitised by Copidosoma
truncatellum, although they are weakly deterred from doing so in larvae
already parasitised by other M. brassicae females or by Hyposoter exiguae.
Parasitoid eggs were deposited in 91% of hosts previously unparasitised,
whereas those already parasitised by M. brassicae or H. exiguae showed
oviposition levels of 10 and 53% respectively, indicating a response to
sensory information after insertion of the ovipositor. When M. brassicae
oviposited in larvae already parasitised by C. truncatellum, the latter
emerged from 77.5% of the larvae, whereas M. brassicae emerged from only
12.5%. However, when M. brassicae oviposited in larvae containing the
slower-developing Hyposoter exiguae, the latter emerged from 16.7% of
larvae and M. brassicae from 76.7%. Hyposoter exiguae showed little
discrimination between unparasitised larvae and those parasitised by any of
the other 3 species, although ovipositor insertion did not result in additional
eggs in larvae already containing H. exiguae. High levels of parasitisation by
H. exiguae occurred in host larvae already parasitised by C. truncatellum,
possibly due to the delayed development of the latter. Nevertheless, only
C. truncatellum emerged from such larvae. Further details of these and other
interactions under laboratory conditions are given in the valuable paper by
Browning and Oatman (1984). It is interesting that the parasitoid complex
attacking T. ni on cotton in the field shows little change from season to
season in species composition and relative importance. However, this does
not enable a simple decision to be made on what impact there would be on
abundance of T. ni (or on plant damage sustained) if one or more of the

348

Biological Control of Insect Pests: Southeast Asian Prospects

species was omitted from an introduction program. This applies particularly
to C. truncatellum, with its feature of prolonging the feeding period of
parasitised larvae.
A further factor to be taken into consideration is the crop or range of
crops and the climatic conditions under which T. ni control is particularly
desired, since the effectiveness of various parasitoid species is affected by
both sets of factors.
Relevant to this statement are studies in northwest Florida, which
reported that Cotesia autographae, Cotesia marginiventris and Meteorus
autographae caused high T. ni mortality during spring and early summer in a
mixed cropping system (Martin et al. 1982), and work in southern Florida
reporting high mortality by Diadegma insulare of T. ni larvae on brassicas.
Furthermore, Stenichneumon culpator cincticornis and Vulgichneumon
brevicinctor appear important in New York State (Sutherland 1966),
Brachymeria ovata in North Carolina (Elsey and Rabb 1970b), and
Achaetoneura archippivora and Eucelatoria armigera in western United
States (Martin et al. 1984).
This suggests that some parasitoid species that are not widely distributed
can act as significant mortality factors under certain climatic or crop
conditions. They might well have a very restricted host range, and would be
available for consideration, if required.

349

5

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Zou, Y.D., Wang, H.F., Tao, Q.Z., Liu, D.K., Yu, W. and Holling, C.S. 1986. Studies on
predation of Propylaea japonica (Thung) larvae on Aphis gossypii Glover (in
Chinese). Insect Knowledge 5: 219Ð222 (Review of Applied Entomology (A)
77: 487, 1989).

477

6

Index of scientific names of insects

Abacetus optimus Peringuey Col.: Carabidae 90
abdominale, Dactylosternum
abdominalis, Aphelinus
abjectella, Drosica
abjectum, Praon
abnormis, Leptomastidea
abrupta, Platysoma
absinthii, Aphidius
absinthii, Praon
acaenovinae, Aphis
acalephae, Trioxys
acantha, Pediobius
Acanthocoris concoloratus Uhler Hem.: Pentatomidae

233

Acaulona brasiliana Townsend Dip.: Tachinidae 139
achaeae, Trichogramma
Achaetoneura archippivora (Williston) Dip.: Tachinidae 327, 348
achaetoneura, Lespesia
Achrysocharis Hym.: Eulophidae 251
Achrysocharis douglasi, see Chrysonotomyia douglasi 251
Achrysocharoides Hym.: Eulophidae 266, 275, 277
Achrysophagus Hym.: Encyrtidae 294, 297
acrobates, Telenomus
Acroclissoides Hym.: Pteromalidae 201, 228
Acrosternum Hem.: Pentatomidae 208
Acrosternum aseadum Rolston Hem.: Pentatomidae 208
Acrosternum gramineum (Fabricius) Hem.: Pentatomidae 205
Acrosternum hilare (Say) Hem.: Pentatomidae 205, 208, 230
Acrosternum marginatum Palisot de Beauvois Hem.: Pentatomidae 208
Acrosternum pennsylvanicum Palisot de Beauvois Hem.: Pentatomidae 208
acuminatus, Aenasius
acuta, Chrysodeixis
Adialytus salicaphis (Fitch) Hym.: Aphidiidae 37, 66
Adonia variegata (Goeze) Col.: Coccinellidae 43
aegyptiacus, Prochiloneurus
aegyptius, Ischiodon

478

Biological Control of Insect Pests: Southeast Asian Prospects

aegyptius, Xanthogramma
Aenasius Hym.: Encyrtidae 149
Aenasius acuminatus Kerrich Hym.: Encyrtidae 147
Aenasius colombiensis Compere Hym.: Encyrtidae 149
Aenasius theobromae Kerrich Hym.: Encyrtidae 147
aequalis, Pimpla
affine, Calosoma
affinis, Cryptolaemus
africanus, Mesochorus
africanus, Stictopisthus
africanus, Syrphophagus
Ageniaspis Hym.: Encyrtidae 123, 125, 265
Ageniaspis citricola Logvinovskaya Hym.: Encyrtidae 257, 265, 272Ð280, 282, 285
Agonoscelis rutila (Fabricius) Hem.: Pentatomidae 218
agraules, Pnigalio
agrestoria, Echthromorpha
agriae, Trichogramma
Agrius convolvuli (Linnaeus) Lep.: Sphingidae 1, 2, 9Ð16
Agromyza Dip.: Agromyzidae 236
Agromyza obtusa, see Melanagromyza obtusa 236
Agromyza phaseoli, see Ophiomyia phaseoli 236
agromyzae, Neodimmockia
agromyzae, Sphegigaster
agromyzae, Trigonogastra
alaskensis, Microplitis
albiceps, Phytomyza
albicollis, Hyperaspis
albipes, Pleurotropitiella
albizonalis, Autocharis
albizonalis, Deanolis
albizonalis, Noorda
Alcaeorrhynchus grandis (Dallas) Col.: Pentatomidae 330
Aleiodes Hym.: Braconidae 21, 23, 28
Aleiodes aligharensi (Quadri) Hym.: Braconidae 21, 23, 28
aliberti, Brachymeria
aligarhensis, Diaphorencyrtus
aligharensi, Aleiodes
Allograpta nasuta (Macquart) Dip.: Syrphidae 43

Scientific Index

479

Allograpta pfeifferi, see Allograpta nasuta 43
Allotropa Hym.: Platygasteridae 150, 301
Allotropa citri Muesebeck Hym.: Platygasteridae 295, 298Ð301, 307, 315
Allotropa kamburovi Annecke and Prinsloo Hym.: Platygasteridae 295, 298
Allotropa mecrida (Walker) Hym.: Platygasteridae 295, 298, 306
Alloxysta Hym.: Charipidae 65, 67, 68, 72
Alloxysta brevis (Thompson) Hym.: Charipidae 72
Alloxysta darci (Girault) Hym.: Charipidae 72
aloysiisabaudiae, Trissolcus
alternatus, Nabis
alticeps, Leucopis
amabilis, Eublemma
Amatellon Hym.: Eulophidae 266, 273, 282
ambiguus, Lipolexis
ambiguus, Lysiphlebus
Amblypelta cocophaga China Hem.: Coreidae 226
Amblyteles fuscipennis Wesmael Hym.: Ichneumonidae 12
americana, Asaphes
americana, Carcinophora
americana, Psalis
americoferus, Nabis
Amobia Dip.: Sarcophagidae 190
amygdali, Hyalopterus
amyoti, Glaucias
Anacanthocoris concoloratus (Uhler) Hem.: Coreidae 224
Anagyrus Hym.: Encyrtidae 147, 152
Anagyrus ananatis Gahan Hym.: Encyrtidae 145, 147, 149, 152, 154Ð156
Anagyrus bohemani (Westwood) Hym.: Encyrtidae 294, 297, 305
Anagyrus coccidivorus, see Anagyrus ananatis 149
Anagyrus greeni Howard Hym.: Encyrtidae 294, 297
Anagyrus kivuensis Compere Hym.: Encyrtidae 149, 307
Anagyrus pseudococci (Girault) Hym.: Encyrtidae 287, 297, 299Ð301, 303, 305Ð307,
311, 315, 316
Anagyrus sawadai Ishii Hym.: Encyrtidae 294, 297, 305, 307
analis, Lebia
ananatis, Anagyrus
Anasa tristis (De Geer) Hem.: Pentatomidae 230
Anastatus Hym: Eupelmidae 203, 211, 214, 215, 223, 227

480

Biological Control of Insect Pests: Southeast Asian Prospects

Anastatus bifasciatus Boyer de Fonscolombe Hym.: Eupelmidae
Anastatus dasyni Ferri•re Hym: Eupelmidae 202
Anastatus japonicus Ashmead Hym: Eupelmidae 203, 225
anchorago, Stiretrus
angelicae, Trioxys
angelicus, Pseudaphycus
Angita insularis Hym.: Ichneumonidae 324
Angitia plutellae, see Diadegma insulare
angolensis, Chilocorus
angustifrons, Pseudaphycus
Anisochrysa basalis, see Mallada basalis 291

203, 223

Anisolabis annulipes, see Euborellia annulipes 90
Ankylopteryx octopunctata Fabricius Neu.: Chrysopidae 271
annulipes, Anisolabis
annulipes, Euborellia
Anochaetus Hym.: Formicidae 92
anomidis, Apanteles
Anomis erosa (HŸbner) Lep.: Noctuidae 18
Anomis flava (Fabricius) Lep.: Noctuidae 1, 2, 17Ð31
Anoplolepis custodiens (F. Smith) Hym.: Formicidae 305
Anoplolepis longipes (Jerdon) Hym.: Formicidae 155
antennata, Nezara
antennata, Pauesia
antestiae, Gryon
antestiae, Hadronotus
Antestia orbana Kirk Hem.: Pentatomidae 225
Anthocoris Hem.: Anthocoridae 43
Antilochus coquebertii (Fabricius) Hem.: Pyrrhocoridae 137, 138
antinorii, Bogosia
Antonina graminis (Maskell) Hem.: Pseudococcidae 155
apachus, Polistes
Apanteles Hym.: Braconidae 12, 14, 23, 29, 90, 192
Apanteles anomidis Watanabe Hym.: Braconidae 21, 23, 29, 31
Apanteles ruficrus, see Cotesia ruficrus 23
Apanteles syleptae Ferri•re Hym.: Braconidae 23, 28
apetzi, Scymnus
Aphanogmus dictynna (Waterston) Hym.: Ceraphronidae 166, 168, 182
Aphelinus Hym.: Aphelinidae 37, 51, 63, 64, 68, 72, 82, 83

Scientific Index

Aphelinus abdominalis (Dalmer) Hym.: Aphelinidae 37, 50, 61, 65, 67, 68, 71
Aphelinus asychis Walker Hym.: Aphelinidae 50
Aphelinus basalis, see Aphelinus abdominalis 37, 67
Aphelinus brevis, see Alloxysta brevis
Aphelinus chaoniae Walker Hym.: Aphelinidae 50
Aphelinus flavipes, see Aphelinus abdominalis 37, 50, 65, 71
Aphelinus gossypii Timberlake Hym.: Aphelinidae 37, 50, 68, 71, 72, 83
Aphelinus humilis Mercet Hym.: Aphelinidae 50
Aphelinus kashmiriensis, see Aphelinus gossypii 50
Aphelinus mali (Haldeman) Hym.: Braconidae 50, 63, 68, 72
Aphelinus mariscusae (Risbec) Hym.: Aphelinidae 37
Aphelinus nigritus, see Aphelinus varipes 50
Aphelinus paramali Zehavi and Rosen Hym.: Aphelinidae 50
Aphelinus semiflavus Howard Hym.: Aphelinidae 56, 69, 72
Aphelinus varipes (Foerster) Hym.: Aphelinidae 50, 61
Aphidencyrtus Hym.: Encyrtidae 57, 63, 65
Aphidencyrtus aligarhensis, see Diaphorencyrtus aligarhensis 121, 131
Aphidencyrtus aphidiphagus, see Syrphophagus aphidivora 72
Aphidencyrtus aphidivora, see Syrphophagus aphidivora 42
Aphidencyrtus diaphorinae, see Diaphorencyrtus aligarhensis 121
aphidimyza, Aphidoletes
aphidiphagus, Aphidencyrtus
aphidis, Pachyneuron
Aphidius Hym.: Aphidiidae 38, 53
Aphidius absinthii Marshall Hym.: Aphidiidae 37, 67
Aphidius avenae, see Aphidius picipes 63
Aphidius cardui, see Lysiphlebus fabarum 39
Aphidius colemani Viereck Hym.: Aphidiidae 37, 51, 60, 61, 64, 66, 68, 73, 81Ð83
Aphidius ervi Haliday Hym.: Aphidiidae 37, 51
Aphidius flavipes, see Aphelinus abdominalis 37
Aphidius floridaensis Smith Hym.: Aphidiidae 51
Aphidius funebris Mackauer Hym.: Aphidiidae 37
Aphidius gifuensis Ashmead Hym.: Aphidiidae 51, 68, 74, 83
Aphidius lonicerae, see Aphidius urticae 51
Aphidius matricariae (Haliday) Hym.: Aphidiidae 5, 37, 51, 67, 74, 82
Aphidius phorodontis, see Aphidius matricariae 51, 74
Aphidius picipes (Nees) Hym.: Aphelinidae 51, 63
Aphidius platensis, see Aphidius colemani 37, 73

481

482

Biological Control of Insect Pests: Southeast Asian Prospects

Aphidius ribis Haliday Hym.: Aphidiidae 37
Aphidius rosae Haliday Hym.: Aphidiidae 38
Aphidius salicis Haliday Hym.: Aphidiidae 38
Aphidius similis Starù and Carver Hym.: Aphidiidae 38, 51
Aphidius sonchi Marshall Hym.: Aphidiidae 51
Aphidius transcaspicus, see Aphidius colemani 73
Aphidius urticae Haliday Hym.: Aphidiidae 51
Aphidius uzbekistanicus Luzhetzki Hym.: Aphidiidae 38, 51
aphidivora, Aphidencyrtus
aphidivora, Syrphophagus
Aphidoletes aphidimyza (Rondani) Dip.: Cecidomyiidae 49, 57, 69, 79, 80
Aphis Hem.: Aphididae 75, 76, 78, 79, 82
Aphis acaenovinae Eastop Hem.: Aphididae 76
Aphis citricola, see Aphis spiraecola 70, 78
Aphis craccivora Koch Hem.: Aphididae 1, 2, 33Ð83
Aphis fabae Scopoli Hem.: Aphididae 73, 75
Aphis gossypii Glover Hem.: Aphididae 1, 2, 33Ð83
Aphis nerii Boyer de Fonscolombe Hem.: Aphididae 60, 70, 73, 74, 76Ð78
Aphis punicae Passerini Hem.: Aphididae 73
Aphis spiraecola Patch Hem.: Aphididae 66, 70, 76, 78
Aphis zizyphi Theobald Hem.: Aphididae 73
apicalia, Exorista
apiciflavus, Scymnus
Apleurotropis Hym.: Eulophidae 266, 273
Aplomya theclarum (Scudder) Dip.: Tachinidae 327
Aprostocetus Hym.: Eulophidae 241, 266
archippivora, Achaetoneura
archippivora, Lespesia
Archytas californiae (Walker) Dip.: Tachinidae 327
arcuata, Coccinella
arcuata, Ectophasiopsis
argenteopilosus, Eriborus
Argyrophylax atropivora, see Zygobothria atropivora 12
armigera, Eucelatoria
armigera, Helicoverpa
Asaphes americana, see Asaphes lucens 72
Asaphes lucens (Provancher) Hym.: Pteromalidae 72
Asaphoideus niger Girault Hym.: Pteromalidae 271, 272

Scientific Index

Ascotolinx funeralis Girault Hym.: Eulophidae 266, 272, 276
aseadum, Acrosternum
asiaticus, Trioxys
Asolcus mitsukurii, see Trissolcus mitsukurii 224
asychis, Aphelinus
atomella, Melanagromyza
atricornis, Phytomyza
atropivora, Argyrophylax
atropivora, Sturmia
atropivora, Zygobothria
attrisium, Rhychium
auberti, Diaphorina
auctus, Trioxys
aurantii, Toxoptera
auratocauda, Cadurcia
auratocauda, Sturmia
auropunctata, Wasmannia
australicum, Trichogramma
australiensis, Eupelmus
Autocharis albizonalis, see Deanolis albizonalis 106
Autographa brassicae, see Trichoplusia ni 318
Autographa californica (Speyer) Lep.: Noctuidae 338, 342
autographae, Cotesia
autographae, Meteorus
avenae, Aphidius
Axiagastus campbelli Distant Hem.: Pentatomidae 226
axyridis, Harmonia
ayyari, Tetrastichus
Azteca Hym.: Formicidae 176
Bactrocera ferrugineus (Fabricius) Dip.: Tephritidae 109
Bactrocera frauenfeldi (Schiner) Dip.: Tephritidae 109
balteatus, Episyrphus
barberi, Sympherobius
Baryscapus galactopus (Ratzeberg) Hym.: Eulophidae 324
basalis, Anisochrysa
basalis, Aphelinus
basalis, Chrysopa

483

484

Biological Control of Insect Pests: Southeast Asian Prospects

basalis, Mallada
basalis, Trissolcus
basicurvus, Trioxys
bella, Leucopis
Belonuchus ferrugatus (Erichson) Col.: Staphylinidae 92, 93, 102
Belonuchus quadratus Kraatz. Col.: Staphylinidae 92, 102
beneficia, Polycystomyia
Bessa remota (Aldrich) Dip.: Tachinidae 327
bicarinativentris, Plutarchia
bicarinatum, Tetramorium
bicolor, Charops
bicolor, Galerita
bicolor, Microdon
bicolor, Paragus
bicolor, Propagalerita
bifasciatus, Anastatus
biguttatus, Scymnus
bilobus, Zelus
bilucenarius, Nephus
bilucenarius, Scymnus
bimaculata, Microcharops
bimaculata, Sturmia
binaevatus, Scymnus
Biosteres Hym.: Braconidae 251
biplaga, Earias
bipunctatus, Nephus
bipunctatus, Scymnus
bipustulatus, Chilocorus
blackburni, Chelonus
blanda blanda, Zenilla
Blepyrus insularis (Cameron) Hym.: Encyrtidae 294, 297
Blepyrus saccharicola Gahan Hym.: Encyrtidae 294, 297, 300, 307
Bogosia antinorii Rondani Dip.: Tachinidae 201, 202, 211, 217, 232Ð234
Bogosia helva (Wiedermann) Dip.: Tachinidae 139
bohemani, Anagyrus
bolivari, Neoprochiloneurus
boninensis, Chrysopa
boninensis, Mallada

Scientific Index

borbonicus, Paragus
borellii, Labia
Brachycantha Col.: Coccinellidae 146, 152
Brachycaudus Hem.: Aphididae 75
Brachycaudus cardui (Linnaeus) Hem.: Aphididae 75
Brachymeria Hym.: Chalcididae 21, 24, 27, 191, 192, 337
Brachymeria aliberti (Schmitz) Hym.: Chalcididae 24, 28
Brachymeria intermedia (Nees) Hym.: Chalcididae 323
Brachymeria lasus (Walker) Hym.: Chalcididae 24, 30, 191, 192, 323
Brachymeria madecassa Steffan Hym.: Chalcididae 24, 29
Brachymeria multicolor (Kieffer) Hym.: Chalcididae 21, 24, 29
Brachymeria obscurata, see Brachymeria lasus 24, 192
Brachymeria ovata (Say) Hym.: Chalcididae 323, 337, 348
Brachymeria paolii Masi Hym.: Chalcididae 24, 29
Brachymeria tibialis Steffan Hym.: Chalcididae 21, 24
Bracon Hym.: Braconidae 190, 192, 265, 276, 282
Bracon greeni Ashmead Hym.: Braconidae 190, 194
Bracon phyllocnistidis (Muesebeck) Hym.: Braconidae 265, 274, 282
brasiliana, Acaulona
brassicae, Autographa
brassicae, Brevicoryne
brassicae, Liriomyza
brassicae, Microgaster
brassicae, Microplitis
brevicapillum, Trichogramma
brevicinctor, Vulgichneumon
Brevicoryne brassicae (Linnaeus) Hem.: Aphididae 48
brevipes, Dysmicoccus
brevipes, Pseudococcus
brevipetiolatus, Zaommomentedon
brevipetioletus, Visnuella
brevis, Alloxysta
brevis, Aphelinus
Brinckochrysa scelestes (Banks) Neu.: Chrysopidae 291
brochymenae, Trissolcus
bromeliae, Diaspis
Brumoides lineatus (Weise) Col.: Coccinellidae 291
Brumus suturalis (Fabricius) Col.: Coccinellidae 43, 291, 309

485

486

Biological Control of Insect Pests: Southeast Asian Prospects

brunneicornis, Sphegigaster
brunnipennis, Plautia
c-nigrum, Hyperaspis
cadaverica, Scleroderma
Cadurcia auratocauda (Curran) Dip.: Tachinidae 22
caenosus, Dictyotis
californiae, Archytas
californica, Autographa
californica, Coccinella
californicus, Ooencyrtus
Calliceras dictynna, see Aphanogmus dictynna 168
Calliephaltes Hym.: Ichneumonidae 195
Callitula filicornis Del. Hym.: Pteromalidae 243
Callitula viridicoxa (Girault) Hym.: Eurytomidae 243, 251
Callitula yasudi Yasuda Hym.: Pteromalidae 243
Calosoma affine Chaudoir Col.: Carabidae 332
Calosoma peregrinator GuŽrin Col.: Carabidae 332, 340
Calosoma schayeri Erichson Col.: Carabidae 26
campaniformis, Eumenes
campbelli, Axiagastus
Camplyocheta Dip.: Tachinidae 22
Campoletis Hym.: Ichneumonidae 324
Campoletis flavicincta Ashmead Hym.: Ichneumonidae 324
Campoletis sonorensis (Cameron) Hym.: Ichneumonidae 324
Campoletis websteri, see Campoletis sonorensis 324
Camponotus Hym.: Formicidae 153
Camponotus friedae Forel Hym.: Formicidae 155
Campyloneura Hym.: Braconidae 190, 192
Cantheconidia furcellata, see Eucanthecona furcellata 22
capensis, Condica
capensis, Prospalta
capicola, Platynaspis
Carcelia Dip.: Tachinidae 111, 327
Carcelia cosmophilae (Curran) Dip.: Tachinidae 22, 27
Carcelia illota (Curran) Dip.: Tachinidae 22, 27
Carcelia kockiana Tours. Dip.: Tachinidae 22
Carcinophora americana (Palisot de Beauvois) Derm.: Labiidae

90, 102

Scientific Index

487

cardiae, Diaphorina
Cardiochiles nigriceps Viereck Hym.: Braconidae 322
cardui, Aphidius
cardui, Brachycaudus
cardui, Lysiphlebus
carnea, Chrysopa
carnea, Chrysoperla
Carpocoris mediterraneus Tamanini Hem.: Pentatomidae 224
Carpophilus Col.: Nitidulidae 144
Casinaria infesta (Cresson) Hym.: Ichneumonidae 324
Cathartus Col.: Silvanidae 92, 93, 102
centaureae, Trioxys
centrosematis, Ophiomyia
Cephalonomia Hym.: Bethylidae 175
Cephalonomia stephanoderis Betrem Hym.: Bethylidae 157, 166, 168, 172Ð177, 182
Ceraphron dictynna, see Aphanogmus dictynna 182
cerasicola, Ephedrus
Ceratomegilla maculata fuscilabris De Geer Col.: Coccinellidae 332
cerealella, Sitotroga
Cermatulus nasalis (Westwood) Hem.: Pentatomidae 22, 27, 218, 225
ceroplastae, Coccophagus
chaoniae, Aphelinus
Charichirus Col.: Staphylinidae 92
Charips, see Alloxysta 65
Charops Hym.: Ichneumonidae 25
Charops bicolor (SzŽpligeti) Hym.: Ichneumonidae 12, 14, 21, 25, 29
Chartocerus walkeri Hayat Hym.: Signiphoridae 120, 123, 125
Cheilomenes lunata (Fabricius) Col.: Coccinellidae 43
Cheilomenes sexmaculata Fabricius Col.: Coccinellidae 43, 65, 67, 122, 128
Cheilomenes sulphurea (Oliver) Col.: Coccinellidae 43
Cheilomenes vicina (Mulsant) Col.: Coccinellidae 43
Cheiloneurus Hym.: Encyrtidae 123, 125, 129
Chelonus Hym.: Braconidae 190, 192, 195, 322
Chelonus blackburni Cameron Hym.: Braconidae 321, 322
Chelonus curvimaculatus Cameron Hym.: Braconidae 322
Chelonus formosanus Sonan Hym.: Braconidae 322
Chelonus insularis (Cresson) Hym.: Braconidae 321, 322, 341
Chelonus, texanus Cresson Hym.: Braconidae 340

488

Biological Control of Insect Pests: Southeast Asian Prospects

Chetogena Dip.: Tachinidae 327
Chilo simplex, see Chilo suppressalis 15
Chilo suppressalis Walker Lep.: Pyralidae 15
Chilocorus angolensis Crotch Col.: Coccinellidae 309
Chilocorus bipustulatus (Linnaeus) Col.: Coccinellidae 292, 303
chilonis, Trichogramma
chilotraeae, Trichogramma
Chlorocytus Hym.: Pteromalidae 242, 246
Chloropulvinaria psidii (Maskell) Hem.: Coccidae 314
chloropus, Telenomus
Chromatomyia horticola (Goureau) Dip.: Agromyzidae 239, 252
Chrysocharis Hym.: Eulophidae 266, 273, 274, 276
Chrysocharis pentheus (Walker) Hym.: Eulophidae 266, 274, 275
Chrysodeixis acuta (Walker) Lep.: Noctuidae 28
Chrysodeixis includens Walker Lep.: Noctuidae 340
Chrysonotomyia Hym.: Eulophidae 241, 266, 273, 277
Chrysonotomyia douglasi (Girault) Hym.: Eulophidae 241, 251
Chrysonotomyia erythraea (Silvestri) Hym.: Eulophidae 241, 251
Chrysonotomyia formosa (Westwood) Hym.: Eulophidae 241, 251
Chrysopa Neu.: Chrysopidae 22, 146, 291, 331
Chrysopa basalis, see Mallada basalis 271
Chrysopa bipunctatus, see Nephus bipunctatus
Chrysopa boninensis Okamoto Neu.: Chrysopidae 122, 271, 273, 282, 283
Chrysopa carnea, see Chrysoperla carnea
Chrysopa formosa Brauer Neu.: Chrysopidae 62
Chrysopa intima MacLachlan Neu.: Chrysopidae 62
Chrysopa irregularis Banks Neu.: Chrysopidae 146, 152
Chrysopa kulingensis Navas Neu.: Chrysopidae 190, 192
Chrysopa lacciperda, see Odontochrysa lacciperda 291, 302, 314
Chrysopa lanata Banks Neu.: Chrysopidae 331
Chrysopa nigricornis Burmeister Neu.: Chrysopidae 331
Chrysopa orestes Banks Neu.: Chrysopidae 65
Chrysopa pallens Tieder Neu.: Chrysopidae 62
Chrysopa perla (Linnaeus) Neu.: Chrysopidae 69
Chrysopa ramburi Schneider Neu.: Chrysopidae 146, 152
Chrysopa rufilabris Burmeister Neu.: Chrysopidae 331
Chrysopa scelestes, see Brinckochrysa scelestes 291
Chrysopa septempunctata, see Chrysopa pallens 62

Scientific Index

489

Chrysopa sinica (Tieder) Neu.: Chrysopidae 62, 69, 271
Chrysoperla carnea (Stephens) Neu.: Chrysopidae 43, 69, 291, 302, 303, 331, 340
Chrysoperla sinica, see Chrysopa sinica 62
Chrysopilus Dip.: Rhagionidae 92
Chrysopilus ferruginosus (Wiedermann) Dip.: Rhagionidae 92, 93, 95, 96
Chrysoplatycerus splendens (Howard) Hym.: Encyrtidae 294, 297, 305, 316
ciliata, Zygobothria
cinctipennis, Closterocerus
cingulatus, Dysdercus
circulus, Halticoptera
Cirrospiloideus phyllocnistoides, see Citrostichus phyllocnistoides 268
Cirrospilus Hym.: Eulophidae 102, 241, 266, 272, 273, 275, 278
Cirrospilus ingenuus Gahan Hym.: Eulophidae 264, 266, 274, 275, 277, 283
Cirrospilus longefasciatus Ferri•re Hym.: Eulophidae 266
Cirrospilus lyncus Walker Hym.: Eulophidae 266, 274
Cirrospilus phyllocnistis Ishii Hym.: Eulophidae 266, 277
Cirrospilus phyllocnistoides, see Citrostichus phyllocnistoides 268
Cirrospilus pictus (Nees) Hym.: Eulophidae 266, 275, 276
Cirrospilus quadristriatus (Subba Rao & Ramamani) Hym.: Eulophidae 257, 266, 272,
273, 275, 277Ð280, 283, 285
Cirrospilus variegatus (Masi) Hym.: Eulophidae 266, 277
Cirrospilus vittatus (Walker) Hym.: Eulophidae 266, 275
cirsii, Trioxys
citrella, Phyllocnistis
citri, Allotropa
citri, Diaphorina
citri, Kratoysma
citri, Planococcus
citricola, Ageniaspis
citricola, Aphis
citricola, Psylla
citriculus, Pseudococcus
citrisuga, Psylla
citroimpura, Trioza
Citrostichus phyllocnistoides (Narayanan) Hym.: Eulophidae 268, 272, 273, 275, 277,
279, 280, 283, 285
Clausenia josefi Rosen Hym.: Encyrtidae 294, 297
Clausenia purpurea Ishii Hym.: Encyrtidae 303

490

Biological Control of Insect Pests: Southeast Asian Prospects

clavata, Gymnosoma
Cleodiplosis koebelei (Felt) Dip.: Cecidomyiidae 151, 154
Cleothera Col.: Coccinellidae 150
Closterocerus Hym.: Eulophidae 177, 273
Closterocerus cinctipennis Ashmead Hym.: Eulophidae 268, 278
Closterocerus trifasciatus Westwood Hym.: Eulophidae 268, 275, 277
Coccodiplosis smithi (Felt) Dip.: Cecidomyiidae 293
coccidivora, Triommata
coccidivorus, Anagyrus
Coccidoxenoides Hym.: Encyrtidae 299, 301
Coccidoxenoides peregrinus Timberlake Hym.: Encyrtidae 287, 294, 296, 297, 300Ð302,
304, 305, 307, 311, 312, 315, 316
Coccinella arcuata, see Harmonia octomaculata 60, 300
Coccinella californica Mann. Col.: Coccinellidae 292
Coccinella novemnotata francisciana Casey Col.: Coccinellidae 332
Coccinella repanda, see Coccinella transversalis 60, 292
Coccinella septempunctata (Linnaeus) Col.: Coccinellidae 26, 43, 62, 65Ð67, 69, 306
Coccinella semipunctata Col.: Coccinellidae 292
Coccinella transversalis (Thunberg) Col.: Coccinellidae 60, 292
Coccinella transversoguttata Faldeman Col.: Coccinellidae 332
Coccinella undecimpunctata Linnaeus Col.: Coccinellidae 69
coccophaga, Amblypelta
Coccophagus Hym.: Aphelinidae 123, 126
Coccophagus ceroplastae (Howard) Hym.: Aphelinidae 123, 126
Coccophagus heteropneusticus Compere Hym.: Aphelinidae 311
Coccus pseudomagnoliarum (Kuwana) Hem.: Coccidae 299
coffea, Phymastichus
coffeicola, Heterospilus
cognatoria, Hadrojoppa
colemani, Aphidius
Collops marginellus Le Conte Col.: Melyridae 332
Collops vittatus (Say) Col.: Melyridae 332
colombiensis, Aenasius
communis, Trioxys
comperei, Telenomus
complanatus, Trioxys
complexa, Sinea
Compsilura concinnata (Meigen) Dip.: Tachinidae 327

Scientific Index

comstocki, Pseudococcus
comstockii, Euplectrus
concinnata, Compsilura
concolor, Pachyneuron
concoloratus, Anacanthocoris
Condica capensis GuenŽe Lep.: Noctuidae 194
confrater, Eupeodes
confrater, Syrphus
confusa, Sinea
confusum, Trichogramma
confusus, Lysiphlebus
congregata, Cotesia
Conocephalus saltator (Saussure) Ort.: Tettigoniidae 146
conquisator, Itoplectis
constrictus, Scymnus
convergens, Hippodamia
convolvuli, Agrius
convolvuli, Herse
Copidosoma Hym.: Encyrtidae 195, 324, 337
Copidosoma floridanum (Ashmead) Hym.: Encyrtidae 324, 326, 337
Copidosoma truncatellum Dalman Hym.: Encyrtidae 317, 321, 324, 335, 337Ð342,
346Ð348
coquebertii, Antilochus
corbetti, Elasmus
Coruna Hym.: Pteromalidae 218
Cosmophila, see Anomis
Cosmophila erosa, see Anomis erosa 18
Cosmophila flava, see Anomis flava 18
Cosmophila indica, see Anomis flava 18
cosmophilae, Carcelia
cosmophilae, Zenillia
Cosmopolites Col.: Curculionidae 86
Cosmopolites pruinosus Heller Col.: Curculionidae 86
Cosmopolites sordidus (Germar) Col.: Curculionidae 1, 2, 85Ð104
Cotesia Hym.: Braconidae 322, 336
Cotesia autographae Muesebeck Hym.: Braconidae 322, 348
Cotesia congregata (Say) Hym.: Braconidae 322
Cotesia glomerata (Linnaeus) Hym.: Braconidae 322, 337

491

492

Biological Control of Insect Pests: Southeast Asian Prospects

Cotesia laeviceps (Ashmead) Hym.: Braconidae 322
Cotesia marginiventris (Cresson) Hym.: Braconidae 322, 336, 340Ð342, 348
Cotesia plutellae Kurdjimov Hym.: Braconidae 322, 336, 337
Cotesia ruficrus (Haliday) Hym.: Braconidae 23, 322, 336
Cotesia yakutatensis Ashmead Hym.: Braconidae 322
craccivora, Aphis
crassipennis, Ectophasia
crawfordi, Ophelosia
Cremastus flavoorbitalis, see Trathala flavoorbitalis 193
Cremastus hapaliae Cushman Hym.: Ichneumonidae 191
Crematogaster Hym.: Formicidae 153
Crematogaster curvispinosa Mayr Hym.: Formicidae 169, 175
cristatus, Telenomus
Cristicaudus nepalensis (Takada) Hym.: Aphidiidae 53
crossota, Plautia
crypticus, Trissolcus
Cryptochetum sp. Dip.: Cryptochetidae 293
Cryptogonus orbiculus, see Nephus bipunctatus 296
Cryptolaemus Col.: Coccinellidae 146, 150, 152, 155
Cryptolaemus affinis Crotch Col.: Coccinellidae 153, 292, 304
Cryptolaemus montrouzieri Mulsant Col.: Coccinellidae 146, 150, 152, 153, 290, 292,
296, 299, 300Ð306, 312, 315, 316
Cryptolaemus wallacii Crotch Col.: Coccinellidae 153
Cryptoprymna Hym.: Pteromalidae 243, 247
Cryptus Hym.: Ichneumonidae 193
Cryptus rutovinctus Pratt Hym.: Ichenumonidae 324
culpator cincticornis, Stenichneumon
curculionis, Physoderes
curvicauda, Labia
curvimaculatus, Chelonus
curvispinosa, Crematogaster
Cuspicona simplex Walker Hem.: Pentatomidae 225
custodiens, Anoplolepis
Cycloneda sanguinea Linnaeus Col.: Coccinellidae 332, 341
Cydia ptychora, see Leguminivora ptychora 194
Cylas formicarius (Fabricius) Col.: Curculionidae 11
cylindrica, Sphaerophoria
Cylindromyia Dip.: Tachinidae 22

Scientific Index

Cylindromyia rufifemur Paramonov Dip.: Tachinidae
Cynipoide Hym.: Cynipidae 241, 247, 251
Cyrtogaster Hym.: Pteromalidae 245
cyrus, Telenomus

493

202, 217, 233

dactylopii, Leptomastix
dactylopii, Prochiloneurus
Dactylosternum abdominale (Fabricius) Col.: Hydrophilidae 85, 91, 93, 97, 102, 103
Dactylosternum hydrophiloides Macleay Col.: Hydrophilidae 85, 91, 96Ð98, 100, 102
Dactylosternum intermedium Reg. Col.: Hydrophilidae 91, 102
Dactylosternum profundus Auct. Col.: Hydrophilidae 91, 102
Dactylosternum subdepressum Lap. Col.: Hydrophilidae 91, 98
Dactylosternum subquadratum Fairmaire Col.: Hydrophilidae 91
darci, Alloxysta
darvicola, Eurytoma
dasyni, Anastatus
dasyops, Winthemia
Deanolis albizonalis (Hampson) Lep.: Pyralidae 110
Deanolis sublimbalis Snellen Lep.: Pyralidae 2, 105Ð112
deion, Trichogramma
delhiensis, Lysiphlebus
Delta pyriforme Fabricius Hym.: Eumenidae 25, 30
deltiger, Toxares
delucchii, Asecodes
delucchii, Teleopterus
demolitor, Microplitis
Dendrocerus Hym.: Megaspilidae 65, 68
dendrolimi, Trichogramma
Dermatopelte Hym.: Eulophidae 191, 192
Dermatopolle, see Dermatopelte 191
derogata, Syllepte
detorquens, Technomyrmex
Diadegma Hym.: Ichneumonidae 325
Diadegma insulare (Cresson) Hym.: Ichneumonidae 325, 348
Diadegma plutellae Hym.: Ichneumonidae 325
diadema, Sinea
Diadiplosis hirticornis Felt Dip.: Cecidomyiidae 293
Diaeretiella rapae (M'Intosh) Hym.: Braconidae 38, 48, 53

494

Biological Control of Insect Pests: Southeast Asian Prospects

Diaphorencyrtus aligarhensis (Shafee, Alam and Agarwal) Hym.: Encyrtidae
121, 123Ð133
Diaphorencyrtus diaphorinae, see Diaphorencyrtus aligarhensis 121
Diaphorina auberti Hollis Hem.: Psyllidae 116, 131
Diaphorina cardiae Crawford Hem.: Psyllidae 131
Diaphorina citri Kuwayama Hem.: Psyllidae 1, 113Ð134
Diaretus rapae, see Diaeretiella rapae
Diaspis bromeliae (Keiren) Hem.: Diaspididae 146, 153
Dichomeris eridantis Meyrick Lep.: Gelechiidae 194
Dichrodiplosis sp. Dip.: Cecidomyiidae 293
Dicrodiplosis guatemalensis Felt Dip.: Cecidomyiidae 151
dictynna, Aphanogmus
dictynna, Calliceras
dictynna, Ceraphron
Dictyotis caenosus (Westwood) Hem.: Pentatomidae 225
dilabida, Sturmia
dimidiata, Harmonia
dimidiata, Leis
Dindymus rubiginosus (Fabricius) Hem.: Pyrrhocoridae 166, 168
Diomus Col.: Coccinellidae 150, 300
Diomus flavifrons see Diomus pumilio
Diomus margipallens, see Scymnus margipallens 150
Diomus pumilio (Weise) Col.: Coccinellidae 292, 306, 310, 313
discolor, Micraspis
Disophrys lutea (BrullŽ) Hym.: Braconidae 24, 30
dispar, Lymantria
Dissolcus fulviventris, see Gryon fulviventris 227
diversus, Pheidologeton
dolichostigma, Melanagromyza
Dolicoderus Hym.: Formicidae 223
dolosus, Enicospilus
donacis, Melanaphis
douglasi, Achrysocharis
douglasi, Chrysonotomyia
Drosica abjectella Walker Lep.: Tineidae 147, 154
dryi, Tamarixia
duplifascialis, Hendecasis
Dysdercus Hem.: Pyrrhocoridae 135, 138

113, 120,

Scientific Index

Dysdercus cingulatus (Fabricius) Hem.: Pyrrhocoridae 1, 2, 135Ð139
dysmicocci, Pseudaphycus
Dysmicoccus brevipes (Cockerell) Hem.: Pseudococcidae 1, 2, 141Ð156, 313
Dysmicoccus neobrevipes Beardsley Hem.: Pseudococcidae 141Ð144, 152Ð154
Earias Lep.: Noctuidae 28
Earias biplaga Walker Lep.: Noctuidae 30
Earias insulana Boisduval Lep.: Noctuidae 194
eastopi, Trioza
Echthromorpha agrestoria (Swederus) Hym.: Ichneumonidae 25, 27
Echthromorpha punctum Brutte Hym.: Ichneumonidae 325
Ectophasia crassipennis (Fabricius) Dip.: Tachinidae 202, 224
Ectophasiopsis arcuata (Bigot) Dip.: Tachinidae 202, 213, 221, 233, 324
edentata, Voria
Elachertus Hym.: Eulophidae 268, 273, 283
Elasmus Hym.: Elasmidae 265, 273, 275
Elasmus corbetti Ferri•re Hym.: Elasmidae 265
Elasmus tischeriae (Howard) Hym.: Elasmidae 265
Elasmus zehntneri Ferri•re Hym.: Elasmidae 265, 276, 284
elegantilis, Neoleucinodes
Elpe, see Camplyocheta
Encarsia Hym.: Aphelinidae 124, 125
Encarsia shafeei, see Encarsia transvena 125
Encarsia transvena (Timberlake) Hym.: Aphelinidae 125
Endaphis maculans (Barnes) Dip.: Cecidomyiidae 57, 79
Enicospilus Hym.: Ichneumonidae 25, 30, 325
Enicospilus dolosus (Tosquinet) Hym.: Ichneumonidae 25, 28
Enicospilus samoana (Kohl) Hym.: Ichneumonidae 25, 27
Ephedrus Hym.: Aphidiidae 38, 71, 83
Ephedrus cerasicola Starù Hym.: Aphidiidae 38, 67
Ephedrus nacheri Quilis Hym.: Aphidiidae 38, 53, 64
Ephedrus persicae Froggatt Hym.: Aphidiidae 38, 53, 64, 74, 83
Ephedrus plagiator (Nees) Hym.: Aphidiidae 38, 53, 64, 71, 74, 75
Epiclerus nomocerus Hym.: Tetracampidae 244
Episyrphus balteatus (De Geer) Dip.: Syrphidae 43
epius, Spalgis
equatus, Trioxys
Eriborus argenteopilosus (Cameron) Hym.: Ichneumonidae 191, 194

495

496

Biological Control of Insect Pests: Southeast Asian Prospects

eridantis, Dichomeris
Eriococcus Hem.: Eriococcidae 312
Eriosoma lanigerum (Hausmann) Hem.: Aphididae 72
erosa, Anomis
erosa, Cosmophila
ervi, Aphidius
erythraea, Chrysonotomyia
erytreae, Trioza
Eublemma amabilis Moore Lep.: Noctuidae 194
Euborellia annulipes (Lucas) Derm.: Labiidae 90, 102
Euborellia pallipes (Shiraki) Derm.: Labiidae 22, 29
Eucanthecona furcellata (Wolff) Hem.: Pentatomidae 22, 30
Eucelatoria armigera (Coquillett) Dip.: Tachinidae 327, 328
Eucelatoria rubentis (Coquillett) Dip.: Tachinidae 328
Euclytia flava (Townsend) Dip.: Tachinidae 202
Eucoilidea Hym.: Cynipidae 241, 247, 255
Euderus Hym.: Eulophidae 241, 251, 268
Eulissus Col.: Staphylinidae 92
Eumenes campaniformis (Fabricius) Hym.: Eumenidae 25, 30
Eumenes pyriformis, see Delta pyriforme 25, 30
Eupelmus Hym.: Eupelmidae 242
Eupelmus australiensis (Girault) Hym.: Eupelmidae 239, 242
Eupelmus grayi Girault Hym.: Eupelmidae 242
Eupelmus popa, see Eupelmus australiensis 239
Eupelmus urozonus Dalman Hym.: Eupelmidae 242, 271
Eupeodes confrater (Wiedemann) Dip.: Syrphidae 43
Euphorocera Dip.: Tachinidae 328
Euphorocera tachinomoides Townsend Dip.: Tachinidae 328
Euplectrus Hym.: Eulophidae 324
Euplectrus comstockii Howard Hym.: Eulophidae 324
Euplectrus manilae Ashmead Hym.: Eulophidae 24
Euplectrus platyhypenae Howard Hym.: Eulophidae 324, 337
Eurydinotellus viridicoxa, see Callitula viridicoxa 251
Euryrhopalus propinquus Kerrich Hym.: Encyrtidae 145, 147, 149
Euryrhopalus schwarzi (Howard) Hym.: Encyrtidae 145, 147, 149
Euryrophalus pretiosa, see Euryrophalus schwarzi 145, 147
Eurytenes nanus, see Opius phaseoli 252
Eurytoma Hym.: Eurytomidae 239, 242, 246, 247, 271, 277

Scientific Index

Eurytoma larvicola Girault Hym.: Eurytomidae 242, 245
Eurytoma poloni Girault Hym.: Eurytomidae 242, 247, 251
Eurytoma syleptae Ferri•re Hym.: Eurytomidae 28
Eusandalum incompleta (Bou‹ek) Hym.: Eupelmidae 271, 274, 277
euschisti, Trissolcus
Eutectona macheralis (Walker) Lep.: Pyralidae 194
Euthyrhynchus floridanus (Linnaeus) Col.: Pentatomidae 330
Eutochia pulla (Erichson) Col.: Tenebrionidae 92
Eutrichopodopsis nitens, see Trichopoda giacomellii 202, 221, 232
Euzophera ferticella Ragonot Lep.: Pyralidae 194
evanescens, Trichogramma
Evania appendigaster (Linnaeus) Hym.: Evaniidae 111
exaltatorius, Trogus
exigua, Spodoptera
exiguae, Hyposoter
exiguum, Trichogramma
Exochomus flavipes (Thunberg) Col.: Coccinellidae 43, 292, 305, 310
Exochomus flaviventris Mader Col.: Coccinellidae 292
Exochomus metallicus Korsch Col.: Coccinellidae 299, 310
exoletum, Praon
Exorista apicalia Baranov Dip.: Tachinidae 23
Exorista sorbillans (Wiedemann) Dip.: Tachinidae 23, 27
Exoristobia philippensis Ashmead Hym.: Encyrtidae 201, 221
exsaguis, Zelus
fabae, Aphis
fabarum, Lysiphlebus
facialis, Pediobius
fecundus, Ooencyrtus
Ferrisia virgata Cockerell Hem.: Pseudococcidae
ferrugatus, Belonuchus
ferrugineus , Bactrocera
ferruginosus, Chrysopilus
ferticella, Euzophera
ficus, Planococcus
filicornis, Callitula
flava, Anomis
flava, Cosmophila

314

497

498

Biological Control of Insect Pests: Southeast Asian Prospects

flava, Euclytia
flavicincta, Campoletis
flavipes, Aphelinus
flavipes, Aphidius
flavipes, Exochomus
flavitarsis, Mischocyttarus
flaviventris, Exochomus
flavoorbitalis, Cremastus
flavoorbitalis, Trathala
flavopicta, Spilochalcis
floridaensis, Aphidius
floridanum, Copidosoma
floridanus, Euthyrhynchus
Fopius Hym.: Braconidae 240, 248, 251
formicarius, Cylas
formosa, Chrysonotomyia
formosa, Chrysopa
formosana, Schizobremia
formosanus, Chelonus
fragilis, Meteorus
fragilis, Pseudococcus
frauenfeldi, Bactrocera
friedae, Camponotus
fullawayi, Zaplatycerus
Fulvius nigricornis Poppius Hem.: Miridae
fulviventris, Dissolcus
fulviventris, Gryon
fulviventris, Hadronotus
funebris, Aphidius
funeralis, Ascotolinx
furcellata, Cantheconidia
furcellata, Eucanthecona
furnacalis, Ostrinia
fuscifemora, Nepiera
fuscipennis, Amblyteles
galactopus, Baryscapus
Galepsomyia Hym.: Eulophidae

90, 102

268, 273, 275

Scientific Index

Galerita bicolor (Drury) Col.: Carabidae 90, 102
Gambrus ultimus (Cresson) Hym.: Ichneumonidae 325
Gelis tenellus (Say) Hym.: Ichneumonidae 325
geminata, Solenopsis
Geocoris Hem.: Lygaeidae 22, 69
Geocoris pallens StŒl Hem.: Lygaeidae 330, 340
Geocoris punctipes Say Hem.: Lygaeidae 330
Geotomus pygmaeus Dallas Hem.: Cydnidae 90, 102, 103
gestuosus, Pterocormus
giacomellii, Trichopoda
gifuensis, Aphidius
gifuensis, Telenomus
gilva, Timberlakia
Gitonides perspicax Knab Dip.: Drosophilidae 147, 153
Glaucias amyoti (Dallas) Hem.: Pentatomidae 225
globula, Hyperaspis
glomerata, Cotesia
Glyptapanteles vitripennis Curtis Hym.: Braconidae 336
Goniozus Hym.: Bethylidae 166, 168, 182
gossypii, Aphelinus
gossypii, Aphis
gracilis, Lipolexis
graelsii, Xanthodes
gramineum, Acrosternum
graminis, Antonina
graminum, Schizaphis
grandis, Alcaeorrhynchus
granulatus, Rogas
grayi, Eupelmus
greeni, Anagyrus
greeni, Bracon
gregori, Sympiesis
Gryon Hym.: Scelionidae 201, 205, 228, 233
Gryon antestiae, see Gryon fulviventris 227
Gryon fulviventris (Crawford) Hym.: Scelionidae 205, 227
Gryon japonicum (Ashmead) Hym.: Scelionidae 205, 212, 221
Gryon obesum Masner Hym.: Scelionidae 205, 212, 221
guatemalensis, Dicrodiplosis

499

500

Biological Control of Insect Pests: Southeast Asian Prospects

guineense, Tetramorium
gustavoi, Trichopoda
Gymnosoma clavata (Rohdendorf) Dip.: Tachinidae 202, 233
Gymnosoma kuramanum Matsumura Dip.: Tachinidae 202
Gymnosoma rotundata (Fabricius) Dip.: Tachinidae 202, 233, 234
Hadrojoppa cognatoria Smith Hym.: Ichneumonidae 12
Hadronotus antestiae, see Gryon fulviventris 227
Hadronotus fulviventris, see Gryon fulviventris 277
Halticoptera Hym.: Pteromalidae 243, 247
Halticoptera circulus (Walker) Hym.: Pteromalidae 243, 252
Halticoptera patellana (Dalman) Hym.: Pteromalidae 243, 246, 249
Hambletonia pseudococcina Compere Hym.: Encyrtidae 145, 148, 149, 152, 154Ð156
hampei, Hypothenemus
hampei, Stephanoderes
hamygurivara, Sphegigaster
hapaliae, Cremastus
Harmonia axyridis (Pallas) Col.: Coccinellidae 62, 63, 66, 128
Harmonia dimidiata (Fabricius) Col.: Coccinellidae 43, 68
Harmonia octomaculata (Fabricius) Col.: Coccinellidae 60, 292, 300
Hebertia Hym.: Pteromalidae 243
Helicoverpa Lep.: Noctuidae 27
Helicoverpa armigera (HŸbner) Lep.: Noctuidae 28, 30, 194
helva, Bogosia
helymus, Metachaeta
helymus, Periscepsia
Hemerobius Neu.: Hemerobiidae 331
Hemiptarsenus Hym.: Eulophidae 241
Hemiptarsenus semialbicornis, see Hemiptarsenus varicornis 252
Hemiptarsenus varicornis (Girault) Hym.: Eulophidae 241, 252
hemipterus, Xenoencyrtus
Hendecasis duplifascialis Hampson Lep.: Pyralidae 194
Herbertia Hym.: Pteromalidae 239, 243
Herse convolvuli, see Agrius convolvuli 10
Hesperus sparsior (Bernhauer) Col.: Staphylinidae 92
Heteropsylla cubana Crawford Hem.: Psyllidae 134
Heteropsylla spinulosa Muddiman, Hodkinson & Hollis Hem.: Psyllidae 134

Scientific Index

Heterospilus coffeicola Schmiedeknecht Hym.: Braconidae 166, 169Ð171, 173, 175,
177, 178, 181, 182
Hexacladia hilaris Burks Hym.: Encyrtidae 203
hilare, Acrosternum
hilaris, Hexacladia
hindecasisella, Phanerotoma
Hippodamia convergens (GuŽrin-MŽneville) Col.: Coccinellidae 69, 332, 341
Hippodamia parenthesis (Say) Col.: Coccinellidae 332
Hippodamia quinqesignata punctulata Le Conte Col.: Coccinellidae 332
Hippodamia variegata (Goeze) Col.: Coccinellidae 62, 69
hirticornis, Diadiplosis
Hister niloticus Marseul Col.: Histeridae 91
hockiana, Carcelia
hoffmanni, Scymnus
hokkaidensis, Trioxys
Holcopelte Hym.: Eulophidae 268
Hololepta Col.: Histeridae 91, 97, 98, 102
Hololepta minuta Erichson Col.: Histeridae 97
Hololepta quadridenta (Fabricius) Col.: Histeridae 91, 96Ð 98, 100, 101
Hololepta striaditera Marseul Col.: Histeridae 91
Homalotylus Hym.: Encyrtidae 306
Horismenus Hym.: Eulophidae 268, 273
Horismenus sardus Hym.: Eulophidae 268
horticola, Chromatomyia
howardi, Tetrastichus
hullensis, Trissolcus
humilis, Aphelinus
humilis, Iridomyrmex
Hyalopterus pruni (Geoffroy) Hem.: Aphididae 73
hybneri, Piezodorus
hydrophiloides, Dactylosternum
Hypantropha Dip.: Tachinidae 328
Hyperaspis Col.: Coccinellidae 150, 292, 300, 310
Hyperaspis albicollis Gorham Col.: Coccinellidae 150
Hyperaspis c-nigrum Mulsant Col.: Coccinellidae 150, 300
Hyperaspis globula Casey Col.: Coccinellidae 310
Hyperaspis jucunda Mulsant Col.: Coccinellidae 310
Hyperaspis lateralis Mulsant Col.: Coccinellidae 292

501

502

Biological Control of Insect Pests: Southeast Asian Prospects

Hyperaspis polita Weise Col.: Coccinellidae 292, 306
Hyperaspis silvestrii Weise Col.: Coccinellidae 150, 154
Hyperomyzus lactucae (Linnaeus) Hem.: Aphididae 62
Hyphantrophaga Dip.: Tachinidae 327
Hyposolenus laevigatus, see Plaesius laevigatus 91
Hyposoter exiguae (Viereck) Hym.: Ichneumonidae 317, 325, 338, 340Ð343, 346, 347
Hypothenemus Col.: Scolytidae 163, 164, 178
Hypothenemus hampei (Ferrari) Col.: Scolytidae 1, 2, 157Ð183
illota, Carcelia
importatus, Opius
includens, Chrysodeixis
includens, Nephus
includens, Pseudoplusia
includens, Scymnus
incompleta, Eusandalum
incompleta, Ratzeburgiola
inconspicua, Palexorista
indagator, Sycanus
indefensa, Plutarchia
indica, Cosmophila
indicum, Monomorium
indicus, Paragus
indicus, Trioxys
infesta, Casinaria
ingenuus, Cirrospilus
innota, Sarcodexia
insidiosus, Orius
insulana, Earias
insulare, Diadegma
insularis, Angitia
insularis, Blepyrus
insularis, Chelonus
insularis, Omicrogiton
intacta, Thopeutis
intermedia, Brachymeria
intermedium, Dactylosternum
interocularis, Thyreocephalus

Scientific Index

interpunctella, Plodia
intima, Chrysopa
Iridomyrmex humilis Mayr Hym.: Formicidae 144
irregularis, Chrysopa
Ischiodon aegyptius (Wiedemann) Dip.: Syrphidae 43
Ischiodon scutellaris Fabricius Dip.: Syrphidae 43, 68
Iseropus stercorator orgyiae (Ashmead) Hym.: Ichneumonidae
Isyropa Dip.: Tachinidae 22
Itamoplex Hym.: Ichneumonidae 191Ð193
Itoplectis conquisator (Say) Hym.: Ichneumonidae 325
japonica, Lysiphlebia
japonica, Propylea
japonicum, Gryon
japonicum, Trichogramma
japonicus, Anastatus
japonicus, Meteorus
japonicus, Pleurotropposis
japonicus, Stenomesius
javanus, Plaesius
johnsoni, Ooencyrtus
jokahamae, Polistes
josefi, Clausenia
jucunda, Hyperaspis
kamburovi, Allotropa
kashmiriensis, Aphelinus
kenyae, Planococcus
kivuensis, Anagyrus
koebelei, Cleodiplosis
Kratoysma Hym.: Eulophidae 269, 272, 277
Kratoysma citri Bou‹ek Hym.: Eulophidae 269, 276, 284
kraunhiae, Planococcus
kulingensis, Chrysopa
kuramanum, Gymnosoma
Labia borellii Burr Derm.: Labiidae 90
Labia curvicauda (Motschulsky) Derm.: Labiidae

90

503

325

504

Biological Control of Insect Pests: Southeast Asian Prospects

Labidura riparia Pallas Derm.: Labiduridae 330
lacciperda, Chrysopa
lacciperda, Odontochrysa
lacciperda, Plesiochrysa
lactucae, Hyperomyzus
lacunatus, Psix
laeviceps, Cotesia
laevigatus, Hyposolenus
laevigatus, Plaesius
lanata, Chrysopa
lanigerum, Eriosoma
lanipes, Trichopoda
laphygmae, Meteorus
larvicola, Eurytoma
lasus, Brachymeria
lateralis, Hyperaspis
Lebia analis Dejean Col.: Carabidae 332
Leguminivora ptychora (Meyrick) Lep.: Tortricidae 194
leibyi, Schizocerophaga
Leis dimidiata, see Harmonia dimidiata
leopardina, Marietta
lepelleyi, Trissolcus
Leptochirus unicolor, see Priochirus unicolor 92, 93, 102
Leptomastidea abnormis (Girault) Hym.: Encyrtidae 287, 295Ð297, 299Ð301, 303Ð307,
313, 315, 316
Leptomastix Hym.: Encyrtidae 301
Leptomastix dactylopii Howard Hym.: Encyrtidae 148, 149, 287, 295Ð297, 299Ð307,
312Ð316
Leptomastix nigrocoxalis Compere Hym.: Encyrtidae 295, 297
Leptomastix trilongifasciatus Girault Hym.: Encyrtidae 295, 297
Lespesia sp. Dip.: Tachinidae 328
Lespesia achaetoneura Dip.: Tachinidae 328
Lespesia archippivora (Riley) Dip.: Tachinidae 328
Leucinodes orbonalis GuenŽe Lep.: Pyralidae 1, 2, 185Ð195
Leucopis Dip.: Chamaemyiidae 43, 65
Leucopis alticeps Czerny Dip.: Chamaemyiidae 293, 306
Leucopis bella Loew Dip.: Chamaemyiidae 293
Leucopis silesiaca Eggar Dip.: Chamaemyiidae 293

Scientific Index

lilacinus, Planococcus
lineatus, Brumoides
Lioderma Col.: Histeridae 91, 102
Lioderma quadridentata, see Hololepta quadridentata 91
liogaster, Opius
Lipolexis ambiguus, see Lysiphlebus ambiguus 39
Lipolexis gracilis Fšrster Hym.: Aphidiidae 38, 53, 68, 75
Lipolexis pseudoscutellaris, see Lipolexis scutellaris 54
Lipolexis scutellaris Mackauer Hym.: Aphidiidae 39, 54, 64, 66Ð68, 75, 82, 83
Liriomyza brassicae (Riley) Dip.: Agromyzidae 252
Liriomyza sativae Blanchard Dip.: Agromyzidae 252
Liriomyza trifolii (Burgess) Dip.: Agromyzidae 251
liriomyzae, Meruana
Lissauchenius venator LafertŽ Col.: Carabidae 26
littoralis, Spodoptera
lituratis, Piezodorus
Lixophaga Dip.: Tachinidae 195
Lobodiplosis pseudococci, see Vincentodiplosis pseudococci 151
lodosi, Trissolcus
longefasciatus, Cirrospilus
longicornis, Paratrechina
longipes, Anoplolepis
longispinus, Pseudococcus
longiventris, Paragus
lonicerae, Aphidius
louisianae, Scymnus
lucens, Asaphes
lunata, Cheilomenes
lurida, Scotinophara
lutea, Disophrys
lutea, Oligochrysa
lutea, Ophelosia
Lygocerus, see Dendrocerus 65
Lymantria dispar (Linnaeus) Lep.: Lymantriidae 225
lyncus, Cirrospilus 39
Lysaphidus Hym.: Aphidiidae 37
Lysaphidus platensis, see Aphidius colemani 37
Lysaphidus schimitscheki (Fahriner) Hym.: Aphidiidae 54

505

506

Biological Control of Insect Pests: Southeast Asian Prospects

Lysiphlebia Hym.: Aphidiidae 39
Lysiphlebia japonica (Ashmead) Hym.: Aphidiidae 39, 54, 63, 64, 66, 75, 82, 83
Lysiphlebia mirzai Shuja Uddin Hym.: Aphidiidae 54, 70, 75
Lysiphlebia rugosa Starù & Schlinger Hym.: Aphidiidae 39
Lysiphlebus Hym.: Aphidiidae 40, 55, 63
Lysiphlebus ambiguus, see Lysiphlebus fabarum 39, 54, 71
Lysiphlebus cardui, see Lysiphlebus fabarum 54
Lysiphlebus confusus, see Lysiphlebus fabarum 39, 54, 75
Lysiphlebus delhiensis (Subba Rao & Sharma) Hym.: Aphidiidae 39
Lysiphlebus fabarum (Marshall) Hym.: Aphidiidae 39, 54, 60, 61, 65Ð67, 71, 75, 83
Lysiphlebus salicaphis, see Adialytus salicaphis 37
Lysiphlebus shaanxiensis Chou and Xian Hym.: Aphidiidae 54
Lysiphlebus testaceipes (Cresson) Hym.: Aphidiidae 5, 40, 55, 60, 61, 63, 64, 66Ð69, 74,
76, 77, 82, 83
macheralis, Eutectona
macheralis, Pyrausta
macrophallus, Sturmia
macrosiphophagum, Toxares
maculans, Endaphis
maculata fuscilabris, Ceratomegilla
maculipennis, Pseudaphycus
maculiventris, Podisus
madecassa, Brachymeria
Madremyia saundersii (Williston) Dip.: Tachinidae 328
maidis, Rhopalosiphum
malayensis, Ooencyrtus
mali, Aphelinus
Mallada basalis (Walker) Neu.: Chrysopidae 291, 302
Mallada boninensis Okamoto Neu.: Chrysopidae 271, 291, 302
manilae, Euplectrus
manilae, Snellenius
marginata, Mesograpta
marginatum, Acrosternum
marginellus, Collops
marginipallens, Diomus
marginiventris, Cotesia
margipallens, Scymnus

Scientific Index

mariae, Spilochalcis
Marietta Hym.: Aphelinidae 128
Marietta javensis, see Marietta leopardina 124, 129
Marietta leopardina Motschulsky Hym.: Aphelinidae 124, 126, 149
mariscusae, Aphelinus
maro, Trissolcus
marshalli, Sericophoromyia
Maruca testulalis, see Maruca vitrata 194
Maruca vitrata Fabricius Lep.: Pyralidae 194
matricariae, Aphidius
mauritiusi, Scymnus
mecrida, Allotropa
mediterraneus, Carpocoris
mediterraneus, Pnigalio
megacephala, Pheidole
megacephala, Pheidole
Megaselia rufipes (Meigen) Dip.: Phoridae 12, 15
Melanagromyza Dip.: Agromyzidae 236
Melanagromyza atomella (Malloch) Dip.: Agromyzidae 253
Melanagromyza dolichostigma de Meijere Dip.: Agromyzidae 236, 247, 251, 254
Melanagromyza obtusa (Malloch) Dip.: Agromyzidae 236
Melanagromyza phaseoli, see Ophiomyia phaseoli
Melanagromyza sojae (Zehnter) Dip.: Agromyzidae 236, 247, 248, 251, 253, 254
melanagromyzae, Biosteres
melanagromyzae, Opius
Melanaphis donacis (Passerini) Hem.: Aphididae 73
melvillei, Tropidophryne
Menochilus sexmaculatus, see Cheilomenes sexmaculata 65
menthastri, Sphaerophoria
Merismorella shakespearei, see Syntomopus shakespearei 254
Meruana liriomyzae Bou‹ek Hym.: Eulophidae 241, 252
Mesochorus Hym.: Ichneumonidae 25, 29
Mesochorus africanus (Ferri•re) Hym.: Ichneumonidae 28
Mesograpta marginata (Say) Dip.: Syrphidae 332
Metachaeta helymus Walker Dip.: Tachinidae 328
metallicus, Exochomus
Meteorus Hym.: Braconidae 21
Meteorus autographae Muesebeck. Hym.: Braconidae 322, 348

507

508

Biological Control of Insect Pests: Southeast Asian Prospects

Meteorus fragilis Wesmael Hym.: Braconidae 24, 29
Meteorus japonicus, see Meteorus pulchricornis 24
Meteorus laphygmae Viereck Hym.: Braconidae 323
Meteorus pulchricornis (Wesmael) Hym.: Braconidae 21, 24, 29
Metopius Hym.: Ichneumonidae 25
metricus, Polistes
Micraspis discolor (Fabricius) Col.: Coccinellidae 65
Microbracon phyllocnistidis, see Bracon phyllocnistidis 265, 274
Microcharops bimaculata (Ashmead) Hym.: Ichneumonidae 325, 335
Microcharops tibialis (Cresson) Hym.: Ichneumonidae 325
Microdon bicolor Sack Dip.: Syrphidae 43
Microgaster brassicae (Muesebeck) Hym.: Braconidae 317, 323, 338Ð341, 343, 346,
347
Microgaster demolitor, see Microplitis demolitor 336
Microgaster plutellae (Muesebeck) Hym.: Braconidae 323
Microgaster rufiventris, see Microplitis rufiventris 356
Micromus posticus (Walker) Neu.: Hemerobiidae 69
Micromus timidus (Fabricius) Neu.: Hemerobiidae 68
Microplitis alaskensis Ashmead Hym.: Braconidae 323
Microplitis brassicae, see Microgaster brassicae 323
Microplitis demolitor Wilkinson Hym.: Braconidae 356
Microplitis rufiventris Kokujev Hym.: Braconidae 356
mikan, Sympiesomorpha
minio, Pnigalio
minuta, Hololepta
minutum, Trichogramma
minutus, Orius
mirzai, Lysiphlebia
Mischocyttarus flavitarsis (Saussure) Hym.: Vespidae 333
mitsukurii, Asolcus
mitsukurii, Trissolcus
molestus, Rogas
Monomorium Hym.: Formicidae 153
Monomorium indicum Forel Hym.: Myrmecidae 67
montana, Winthemia
montanus, Patrocloides
montrouzieri, Cryptolaemus
mormideae, Telenomus

Scientific Index

multicolor, Brachymeria
multilineatum, Zagrammosoma
murrayii, Psylla
myzophagum, Praon
Myzus Hem.: Aphididae 75
Myzus persicae Sulzer Hem.: Aphididae 5, 59, 63, 71Ð74
Nabis alternatus Parshley Col.: Nabidae 330
Nabis americoferus Carayon Hem.: Nabidae 330, 340
Nabis roseipennis (Reuter) Hem.: Nabidae 330
Nabis sinoferus Hsiao Hem.: Nabidae 22
nacheri, Ephedrus
nakagawai, Telenomus
nanus, Eurytenes
narangae, Zacharops
nasalis, Cermatulus
nasuta, Allograpta
nasuta, Prorops
nearctaphidis, Trioxys
nebulosa, Pseudiastata
neobrevipes, Dysmicoccus
Neochrysocharis, see Chrysonotomyia 266, 277
Neodimmockia agromyzae, see Hemiptarsenus varicornis 252
Neoleucinodes Lep.: Pyralidae 186
Neoleucinodes elegantilis (GuenŽe) Lep.: Pyralidae 186, 195
Neoprochiloneurus bolivari (Mercet) Hym.: Encyrtidae 306
Neorileya Hym.: Eurytomidae 203
nepalensis, Cristicaudus
Nephopterix rhodobasalis Hampson Lep.: Pyralidae 194
Nephus Col.: Coccinellidae 300, 310
Nephus bilucenarius, see Scymnus bilucenarius 145, 150
Nephus bipunctatus (Kugelann) Col.: Coccinellidae 292, 298, 306, 310
Nephus includens, see Scymnus includens 292
Nephus pictus, see Scymnus bilucenarius 145
Nephus reunioni (Fursch) Col.: Coccinellidae 292, 302, 304, 306, 310, 316
Nepiera fuscifemora Graf Hym.: Ichneumonidae 326
nerii, Aphis
Nesolynx phaeosoma (Waterston) Hym.: Eulophidae 28
Netelia Hym.: Ichneumonidae 325

509

510

Biological Control of Insect Pests: Southeast Asian Prospects

Nezara Hem.: Pentatomidae 198, 202
Nezara antennata Scott Hem.: Pentatomidae 208, 224, 229, 233, 234
Nezara viridula (Linnaeus) Hem.: Pentatomidae 1, 137, 197Ð233
nezarae, Ooencyrtus
ni, Trichoplusia
niger, Asaphoideus
niger, Thysanus
niger, Xenoencyrtus
nigriceps, Cardiochiles
nigricornis, Chrysopa
nigricornis, Fulvius
nigrifrontalis, Trichopoda
nigripes, Sigalphus
nigritus, Aphelinus
nigrocoxalis, Leptomastix
nigrofasciatus, Phonoctonus
nigronervosa, Pentalonia
niloticus, Hister
nitens, Eutrichopodopsis
noctuae, Zenillia
nomocerus, Epiclerus
Noorda albizonalis, see Deanolis albizonalis 106
Norbanus Hym.: Pteromalidae 239
notata, Sympiesis
novemnotata francisciana, Coccinella
Nyereria Hym.: Braconidae 24, 28
obesum, Gryon
obscurata, Brachymeria
obscurus, Pseudococcus
obtusa, Agromyza
obtusa, Melanagromyza
octomaculata, Harmonia
octopunctata, Ankylopteryx
Ocyptera, see Cylindromyia 42
Odontochrysa lacciperda Kimmins Neu.: Chrysopidae 291, 302, 314
Oechalia schellembergii (GuŽrin-MŽneville) Hem.: Pentatomidae 22, 27, 218
oenone, Trissolcus

Scientific Index

511

ogyges, Trissolcus
oleracei, Opius
Oligochrysa lutea (Walker) Neu.: Chrysopidae 291, 300
Olla v-nigrum (Mulsant) Col.: Coccinellidae 332
Omicrogiton insularis Orchym. Col.: Hydrophilidae 91, 102
Ooencyrtus Hym.: Encyrtidae 201, 204, 223, 225, 230
Ooencyrtus californicus Hym.: Encyrtidae 203
Ooencyrtus fecundus Ferri•re & VoegelŽ Hym.: Encyrtidae 204
Ooencyrtus johnsoni (Howard) Hym.: Encyrtidae 204
Ooencyrtus malayensis Ferri•re Hym.: Encyrtidae 204
Ooencyrtus nezarae Ishii Hym.: Encyrtidae 204, 212, 221, 224, 227
Ooencyrtus pityocampae (Mercet) Hym.: Encyrtidae 204
Ooencyrtus submetallicus (Howard) Hym.: Encyrtidae 204, 212Ð214, 217, 221, 227, 230
Ooencyrtus trinidadensis Crawford Hym.: Encyrtidae 204, 213, 221
Ophelosia crawfordi Riley Hym.: Encyrtidae 295, 298
Ophiomyia centrosematis (de Meijere) Dip.: Agromyzidae 239, 248, 252
Ophiomyia phaseoli (Tryon) Dip.: Agromyzidae 1, 2, 235Ð255
Ophiomyia spencerella Greathead Dip.: Agromyzidae 236, 239, 253, 255
Opius Hym.: Braconidae 240, 247
Opius importatus Fischer Hym.: Braconidae 235, 239, 240, 249, 250, 255
Opius liogaster SzŽpligeti Hym.: Braconidae 240, 248, 252
Opius melanagromyzae, see Opius phaseoli 252
Opius oleracei Fischer Hym.: Braconidae 239, 240
Opius phaseoli Fischer Hym.: Braconidae 235, 239, 240, 246, 248Ð250, 252, 253, 255
optimus, Abacetus
orbana, Antestis
orbonalis, Leucinodes
orestes, Chrysopa
Orius Hem.: Anthocoridae 43
Orius insidiosus Say Col.: Anthocoridae 330
Orius minutus (Linnaeus) Hem.: Anthocoridae 22, 63, 271, 291
Orius tristicolor (White) Hem.: Anthocoridae 330, 340, 341
Ostrinia furnacalis (GuenŽe) Lep.: Pyralidae 14
ovata, Brachymeria
Oxyharma subaenea (Dodd) Hym.: Pteromalidae 243, 254
Pachyneuron Hym.: Pteromalidae 67, 77
Pachyneuron aphidis BouchŽ Hym.: Pteromalidae

57, 65, 68, 78

512

Biological Control of Insect Pests: Southeast Asian Prospects

Pachyneuron concolor (Fšrster) Hym.: Pteromalidae 123, 125
Pachyneuron solitarius (Ratz) Hym.: Pteromalidae 306
Pachyneuron vitodurense Delucchi Hym.: Pteromalidae 68
Pachyophthalmus Dip.: Tachinidae 190
pacificus, Planococcus
pacificus, Telenomus
Paederus Col.: Staphylinidae 223
Palexorista inconspicua (Meigen) Dip.: Tachinidae 23
Palexorista quadrizonula (Thomson) Dip.: Tachinidae 23, 30, 31
pallens, Chrysopa
pallens, Geocoris
pallidicollis, Pullus
pallidus, Trioxys
pallipes, Euborellia
paolii, Brachymeria
parachrysops, Sturmia
Paragus bicolor, see Microdon bicolor 43
Paragus borbonicus Macquart Dip.: Syrphidae 43
Paragus indicus, see Paragus tibialis 43
Paragus longiventris Loewe Dip.: Syrphidae 43
Paragus serratus (Fabricius) Dip.: Syrphidae 43
Paragus tibialis (FallŽn) Dip.: Syrphidae 43
paramali, Aphelinus
Paranaemia vittegera (Mulsant) Col.: Coccinellidae 332
Parapanteles Hym.: Braconidae 24, 28
Paratrechina longicornis (Latreille) Hym.: Formicidae 145
Paratrigonogastra stella, see Sphegigaster stella 247, 254
parenthesis, Hippodamia
patellana, Halticoptera
Patrocloides montanus (Cresson) Hym.: Ichneumonidae 325, 340
Pauesia antennata Makerjl Hym.: Aphidiidae 40
Pauridia peregrina, see Coccidoxenoides peregrinus 294, 297, 311
Pediobius Hym.: Eulophidae 239, 241
Pediobius acantha (Walker) Hym.: Eulophidae 241
Pediobius facialis (Giraud) Hym.: Eulophidae 324, 336
Pediobius sexdentatus Hym.: Pteromalidae 326, 338
pennipes, Trichopoda
pennsylvanicum, Acrosternum

Scientific Index

513

pensylvanica, Vespula
Pentalonia nigronervosa Coquerel Hem.: Aphididae 67, 68, 74, 81
pentheus, Chrysocharis
perdignus, Pseudaphycus
peregrina, Pauridia
peregrinator, Calosoma
peregrinus, Coccidoxenoides
Periscepsia helymus, see Metachaeta helymus 327
perla, Chrysopa
perplexus, Rogas
persicae, Ephedrus
persicae, Myzus
perspicax, Gitonides
perticella, Euzophera
petiolatus, Semielacher
pfeifferi, Allograpta
phaeosoma, Nesolynx
Phanerotoma Hym.: Braconidae 190, 192, 195
Phanerotoma hindecasisella Cameron Hym.: Braconidae 190, 194
phaseoli, Agromyza
phaseoli, Melanagromyza
phaseoli, Ophiomyia
phaseoli, Opius
Pheidole Hym.: Formicidae 67, 153, 156
Pheidole megacephala (Fabricius) Hym.: Formicidae 92, 93, 144, 152Ð154, 223, 300
Pheidologeton diversus (Jerdon) Hym.: Formicidae 155
Phenacoccus solani Ferris Hem.: Pseudococcidae 313
philippensis, Exoristobia
Phonoctonus Hem.: Reduviidae 139
Phonoctonus nigrofasciatus StŒl Hem.: Reduviidae 139
Phonoctonus subimpictus StŒl Hem.: Reduviidae 139
Phorocera Dip.: Tachinidae 328
phorodontis, Aphidius
Phorticus pygmaeus Poppius Hem.: Nabidae 90, 102
Phryxe vulgaris (FallŽn) Dip.: Tachinidae 328
phyllocnistidis, Bracon
phyllocnistidis, Microbracon
Phyllocnistis Lep.: Gracillariidae 258

514

Biological Control of Insect Pests: Southeast Asian Prospects

Phyllocnistis citrella Stainton Lep.: Gracillariidae 1, 2, 257Ð286
phyllocnistis, Cirrospilus
phyllocnistis, Scotolinx
phyllocnistoides, Cirrospiloideus
phyllocnistoides, Cirrospilus
phyllocnistoides, Cirrostichus
phyllocnistoides, Tetrastichus
Phymastichus coffea La Salle Hym.: Eulophidae 157, 166, 168, 174, 178, 182
Physoderes curculionis China Hem.: Reduviidae 90, 102
Phytomyza albiceps Meigen Dip.: Agromyzidae 254
Phytomyza atricornis, see Chromatomyia horticola 239, 252
picipes, Aphidius
pictus, Cirrospilus
pictus, Nephus
pictus, Scymnus
Pieris rapae Linnaeus Lep.: Pieridae 337
Piezodorus hybneri (Gmelin) Hem.: Pentatomidae 218, 227
Piezodorus lituratus (Fabricius) Hem.: Pentatomidae 224
pilipes, Trichopoda
Pimpla aequalis (Provancher) Hym.: Ichneumonidae 325
pinguis, Winthemia
ÔPireniniÕ Hym.: Pteromalidae 276
pisum, Acyrthosiphon
pityocampae, Ooencyrtus
Plaesius javanus Erichson Col.: Histeridae 85, 91, 93, 95Ð100, 103, 104
Plaesius laevigatus Marseul Col.: Histeridae 85, 91, 93, 95, 96, 100, 104
plagiator, Ephedrus
Planococcus Hem.: Pseudococcidae 288
Planococcus citri (Risso) Hem.: Pseudococcidae 1, 2, 155, 287Ð316
Planococcus ficus (Signoret) Hem.: Pseudococcidae 288
Planococcus kenyae (Le Pelley) Hem.: Pseudococcidae 288, 311
Planococcus kraunhiae (Kuwana) Hem.: Pseudococcidae 296, 305
Planococcus lilacinus Cockerell Hem.: Pseudococcidae 313, 314
Planococcus pacificus Cox Hem.: Pseudococcidae 288, 313
platensis, Aphidius
platensis, Lysaphidius
platneri, Trichogramma
platyhypenae, Euplectrus

Scientific Index

Platynaspis Col.: Coccinellidae 310
Platynaspis capicola Crotch Col.: Coccinellidae 68
Platysoma Col.: Histeridae 91
Platysoma abrupta Erichson Col.: Histeridae 91, 102
Plautia brunnipennis (Montrouzier and Signoret) Hem.: Pentatomidae
Plautia crossota (Dallas) Hem.: Pentatomidae 206
Plesiochrysa lacciperda, see Chrysopa lacciperda 291
pleuralis, Alloxysta
Pleurotropitiella albipes Blanchard Hym.: Eulophidae 203
Pleurotropposis japonicus (Kamijo) Hym.: Eulophidae 269
Plodia interpunctella (HŸbner) Lep.: Pyralidae 344
plusiae, Siphona
Plutarchia Hym.: Eurytomidae 242, 247
Plutarchia bicarinativentris Girault Hym.: Eurytomidae 239, 242
Plutarchia indefensa (Walker) Hym.: Eurytomidae 242, 248, 254
Plutella xylostella Linnaeus Lep.: Yponomeutidae 337
plutellae, Angitia
plutellae, Cotesia
plutellae, Diadegma
plutellae, Microgaster
Pnigalio Hym.: Eulophidae 269, 273, 274, 277, 278
Pnigalio agraules Walker Hym.: Eulophidae 269, 276
Pnigalio mediterraneus, see Pnigalio agraules 276
Pnigalio minio (Walker) Hym.: Eulophidae 269, 277, 284
podisi, Telenomus
Podisus Hem.: Pentatomidae 220
Podisus maculiventris (Say) Hem.: Pentatomidae 27, 331
Polistes Hym.: Vespidae 26, 29
Polistes apachus Saussure Hym.: Vespidae 333
Polistes jokahamae Radoszkowski Hym.: Vespidae 26, 29
Polistes metricus Say Hym.: Vespidae 333
polita, Hyperaspis
poloni, Eurytoma
Polycystomyia beneficia, see Callitula viridicoxa 251
Polycystus Hym.: Pteromalidae 243, 246
Polycystus propinquus Waterston Hym.: Pteromalidae 243
popa, Eupelmus
posticus, Micromus

515

225

516

Biological Control of Insect Pests: Southeast Asian Prospects

Praon Hym.: Braconidae 40, 56, 77
Praon abjectum (Haliday) Hym.: Braconidae 40, 55
Praon absinthii Bagnall Hym.: Braconidae 55, 64
Praon exsoletum (Nees) Hym.: Braconidae 40, 55
Praon myzophagum Mackauer Hym.: Braconidae 56
Praon volucre (Haliday) Hym.: Braconidae 41, 56, 62, 77
pretiosa, Euryrophalus
pretiosum, Trichogramma
Priochirus unicolor (Laporte) Col.: Staphylinidae 92, 93, 102
Pristomerus Hym.: Ichneumonidae 325
Pristomerus spinator (Fabricius) Hym.: Ichneumonidae 325
Pristomerus testaceus Morley Hym.: Ichneumonidae 191, 194
Prochiloneurus dactylopii (Howard) Hym.: Encyrtidae 305
profundum, Dactylosternum
Propagalerita bicolor, see Galerita bicolor 90
propinquus, Euryrhopalus
propinquus, Polycystus
Propylea japonica (Thunberg) Col.: Coccinellidae 62, 63
Prorops nasuta Waterston Hym.: Bethylidae 157, 166, 168, 170Ð182
Prospalta capensis, see Condica capensis 194
Protomicroplitis Hym.: Braconidae 24, 28
pruinosus, Cosmopolites
pruni, Hyalopterus
Psalis americana, see Carcinophora americana 90, 102
Pseudaphycus Hym.: Encyrtidae 148, 149, 152, 300
Pseudaphycus angelicus (Howard) Hym.: Encyrtidae 152, 295, 298
Pseudaphycus angustifrons Gahan Hym.: Encyrtidae 148
Pseudaphycus dysmicocci Bennett Hym.: Encyrtidae 148, 149, 155
Pseudaphycus maculipennis Mercet Hym.: Encyrtidae 295, 298, 314
Pseudaphycus perdignus Compere and Zinna Hym.: Encyrtidae 295, 300, 301, 309
Pseudiastata nebulosa Coquerell Dip.: Drosophilidae 147, 151, 152, 155, 156
Pseudiastata pseudococcivora Sabrosky Dip.: Drosophilidae 151
pseudococci, Anagyrus
pseudococci, Lobodiplosis
pseudococci, Vincentodiplosis
pseudococcina, Hambletonia
pseudococcivora, Pseudiastata
Pseudococcus brevipes, see Dysmicoccus brevipes 142

Scientific Index

Pseudococcus citriculus Green Hem.: Pseudococcidae 303, 311
Pseudococcus comstocki Kuwana Hem.: Pseudococcidae 313
Pseudococcus fragilis Brain Hem.: Pseudococcidae 311
Pseudococcus longispinus Targioni-Tozzetti Hem.: Pseudococcidae 311
Pseudococcus obscurus Essig Hem.: Pseudococcidae 311
Pseudococcus vitis Niediel Hem.: Pseudococcidae 313
pseudomagnoliarum, Coccus
Pseudoperichaeta Dip.: Tachinidae 190
Pseudoplusia includens, see Chrysodeixis includens 340
pseudoscutellaris, Lipolexis
psidii, Chloropulvinaria
Psix lacunatus Johnson & Masner Hym.: Scelionidae 205
Psix striaticeps (Dodd) Hym.: Scelionidae 205, 220
Psylla Hem.: Psyllidae 131
Psylla citricola Yang and Li Hem.: Psyllidae 116
Psylla citrisuga Yang and Li Hem.: Psyllidae 116
Psylla murrayii Mathur Hem.: Psyllidae 116
Psyllaephagus Hym.: Encyrtidae 123, 125, 129
Psyllaephagus diaphorinae, see Diaphorencyrtus aligarhensis 121
Pterocormus gestuosus (Cresson) Hym.: Ichneumonidae 326
Pteromalus Hym.: Pteromalidae 205
Pterosema subaenea, see Oxyharma subaenea 254
ptychora, Cydia
ptychora, Leguminivora
pulchricornis, Meteorus
pulla, Eutochia
Pullus Col.: Coccinellidae 43
Pullus pallidicollis Mulsant Col.: Coccinellidae 292, 302
Pulvinaria Hem.: Coccidae 312
pumilio, Diomus
punctata, Xanthopimpla
punctipes, Geocoris
punctum, Echthromorpha
punicae, Aphis
purpurea, Clausenia
pygmaeus, Geotomus
pygmaeus, Phorticus
Pyrausta macheralis, see Eutectona macheralis 194

517

518

Biological Control of Insect Pests: Southeast Asian Prospects

pyreformis, Eumenes
pyriforme, Delta
pyrrhopya, Winthemia
Quadrastichus Hym.: Eulophidae 269, 272, 275, 277, 281
quadratus, Belonuchus
quadridenta, Hololepta
quadridentata, Lioderma
quadripustulata, Winthemia
quadristriata, Scotolinx
quadristriatus, Cirrospilus
quadrivittatus, Scymnus
quadrizonula, Palexorista
quatrosignata, Sticholotis
quinqesignata punctulata, Hippodamia
radiata, Tamarixia
radiatus, Tetrastichus
ramburi, Chrysopa
rapae, Diaeretiella
rapae, Diaretus
rapae, Pieris
Ratzeburgiola incompleta, see Eusandalum incompleta 271, 277
remota, Bessa
renardii, Zelus
repanda, Coccinella
reunioni, Nephus
reunioni, Scymnus
rhanis, Synopeas
Rhizobius ventralis Erichson Col.: Coccinellidae 146
rhodobasalis, Nephopterix
Rhopalosiphum maidis (Fitch) Hem.: Aphididae 77
Rhychium attrisium Van der Vecht Hym.: Vespidae 111
ribis, Aphidius
rietscheli, Trioxys
riparia, Labidura
Riptortus serripes (Fabricius) Hem.: Alydidae 218
robusta, Sphaerophoria

Scientific Index

519

roepkei, Scymnus
Rogas Hym.: Braconidae
Rogas granulatus De Gant Hym.: Braconidae 323
Rogas molestus Cresson Hym.: Braconidae 323
Rogas rufocoxalis Gahan Hym.: Braconidae 323
rosae, Aphidius
roseipennis, Nabis
rotundata, Gymnosoma
rubentis, Eucelatoria
rubicola, Trioxys
rubiginosus, Dindymus
rubricatus, Xenoencyrtus
rudus, Trissolcus
ruficrus, Apanteles
ruficrus, Cotesia
rufifemur, Cylindromyia
rufilabris, Chrysopa
rufipes, Megaselia
rufocoxalis, Rogas
rufopicta, Winthemia
rugosa, Lysiphlebia
rugosa, Sphegigaster
rugosa, Trigonogastra
ruralis, Voria
rutila, Agonoscelis
rutovinctus, Cryptus
saccharicolus, Blepyrus
salicaphis, Adialytus
salicaphis, Lysiphlebus
salicis, Aphidius
saltator, Conocephalus
samoana, Enicospilus
sanctus, Sympherobius
sandanis, Sympiesis
sanguinea, Cycloneda
Sarcodexia innota (Walker) Dip.: Sarcophagidae 202
Sarcodexia sternodontis Townsend Dip.: Sarcophagidae

202, 327

520

Biological Control of Insect Pests: Southeast Asian Prospects

Sarcophaga sp. Dip.: Sarcophagidae 328
sardus, Horismenus
sativae, Liriomyza
saundersii, Madremyia
sawadai, Anagyrus
scapuliferus, Scymnus
Scarites Col.: Carabidae 90, 102
scelestes, Brinckochrysa
scelestes, Chrysopa
schayeri, Calosoma
schellenbergii, Oechalia
schimitscheki, Lysaphidus
Schizaphis graminum (Rondani) Hem.: Aphididae 5
Schizobremia formosana Felt Dip.: Cecidomyiidae 147, 154
Schizocerophaga leibyi Townsend Dip.: Tachinidae 328
schwarzi, Euryrhopalus
Scleroderma Hym.: Bethylidae 180
Scleroderma cadaverica Benoit Hym.: Bethylidae 168, 180
Scotinophara lurida (Burmeister) Hem.: Pentatomidae 224
Scotolinx phyllocnistis, see Cirrospilus phyllocnistis 267
Scotolinx quadristriata, see Cirrospilus quadristriata 267
scutellaris, Ischiodon
scutellaris, Lipolexis
scuticarinatus, Trissolcus
Scymnus Col.: Coccinellidae 43, 66, 146, 150, 152, 293, 305
Scymnus apetzi Mulsant Col.: Coccinellidae 292, 306
Scymnus apiciflavus (Motschulsky) Col.: Coccinellidae 146, 292
Scymnus bilucenarius (Mulsant) Col.: Coccinellidae 145, 146, 150, 152
Scymnus biguttatus Mulsant Col.: Coccinellidae 292, 306
Scymnus binaevatus Mulsant Col.: Coccinellidae 293, 296, 310
Scymnus bipunctatus, see Nephus bipunctatus 292, 296, 310
Scymnus constrictus Mulsant Col.: Coccinellidae 68
Scymnus hoffmanni Weise Col.: Coccinellidae 62, 63, 66
Scymnus includens (Kirsch) Col.: Coccinellidae 292, 314
Scymnus louisianae Chapin Col.: Coccinellidae 69
Scymnus margipallens Mulsant Col.: Coccinellidae 150, 154
Scymnus mauritiusi Korsch. Col.: Coccinellidae 146, 153
Scymnus pictus Gorham Col.: Coccinellidae 150

Scientific Index

Scymnus quadrivittatus Mulsant Col.: Coccinellidae 150
Scymnus reunioni, see Nephus reunioni 292, 302, 304, 310
Scymnus roepkei De Fluiter Col.: Coccinellidae 292
Scymnus scapuliferus Mulsant Col.: Coccinellidae 43
Scymnus sordidus Horn Col.: Coccinellidae 152, 292, 300, 310
Scymnus subvillosus (Goeze) Col.: Coccinellidae 292, 306
Scymnus trepidulus Weise Col.: Coccinellidae 43
Scymnus uncinatus Sicard Col.: Coccinellidae 145, 150
semialbicornis, Hemiptarsenus
Semielacher Hym.: Eulophidae 269, 276
Semielacher petiolatus (Girault) Hym.: Eulophidae 257, 264, 269, 281, 284, 285
semiflavus, Aphelinus
semifumatum, Trichogramma
Senometopia, see Carcelia 111
Senotainia Dip.: Sarcophagidae 327
septempunctata, Chrysopa
septempunctata, Coccinella
Sericophoromyia marshalli Villeneuve Dip.: Tachinidae 23
serratus, Paragus
serripes, Riptortus
sexdentatus, Pediobius
sexmaculata, Cheilomenes
sexmaculatus, Menochilus
seychellensis, Telenomus
shaanxiensis, Lysiphlebus
shakespearei, Merismorella
shakespearei, Syntomopus
side, Spilochalcis
Sigalphus nigripes He & Chen Hym.: Braconidae 24
signata, Chrysopa
Signiphora Hym.: Signiphoridae 123, 129
silesiaca, Leucopis
silvestri, Hyperaspis
similis, Aphidius
simplex, Chilo
simplex, Cuspicona
Sinea complexa Caudell Hem.: Reduviidae 331
Sinea confusa Caudell Hem.: Reduviidae 331

521

522

Biological Control of Insect Pests: Southeast Asian Prospects

Sinea diadema (Fabricius) Hem.: Reduviidae 331
sinensis, Trioxys
sinica, Chrysopa
sinica, Chrysoperla
sinoferus, Nabis
Siphona Dip.: Tachinidae 328
Siphona plusiae Coquillett Dip.: Tachinidae 328
sipius, Trissolcus
Sitotroga cerealella (Olivier) Lep.: Gelechiidae 344
smithi, Coccodiplosis
Snellenius manilae (Ashmead) Hym.: Braconidae 323
sojae, Melanagromyza
solani, Phenacoccus
Solenopsis Hym.: Formicidae 152, 153, 275
Solenopsis geminata (Fabricius) Hym.: Formicidae 144, 153, 154, 223
solitarius, Pachyneuron
solitus, Telenomus
solocis, Trissolcus
sonchi, Aphidius
sonorensis, Campoletis
sorbillans, Exorista
sordidus, Cosmopolites
sordidus, Scymnus
Spalgis epius (Westwood) Lep.: Lycaenidae 294, 302, 314
sparsior, Hesperus
spencerella, Ophiomyia
Sphaerophoria cylindrica (Say) Dip.: Syrphidae 332
Sphaerophoria menthastri (Linnaeus) Dip.: Syrphidae 332
Sphaerophoria robusta (Curran) Dip.: Syrphidae 332
Sphegigaster Hym.: Pteromalidae 244, 247
Sphegigaster agromyzae, see Sphegigaster voltairei 254
Sphegigaster brunneicornis (Ferri•re) Hym.: Pteromalidae 243, 245, 246, 254
Sphegigaster hamygurivara Hym.: Pteromalidae 243
Sphegigaster rugosa (Waterston) Hym.: Pteromalidae 243, 246, 254
Sphegigaster stella (Girault) Hym.: Pteromalidae 244, 247, 254
Sphegigaster stepicola Bou‹ek Hym.: Pteromalidae 244, 245, 254
Sphegigaster voltairei (Girault) Hym.: Pteromalidae 244, 245, 247, 254
Spilochalcis flavopicta Cresson Hym.: Chalcididae 323

Scientific Index

Spilochalcis nr. mariae (Riley) Hym.: Chalcididae 323
Spilochalcis side Walker Hym.: Chalcididae 323
spinator, Pristomerus
spiraecola, Aphis
splendens, Chrysoplatycerus
Spodoptera exigua HŸbner Lep.: Noctuidae 16, 30, 194, 345
Spodoptera littoralis (Boisduval) Lep.: Noctuidae 30
stella, Paratrigonogastra
stella, Sphegigaster
Stenichneumon culpator cincticornis (Cresson) Hym.: Ichneumonidae
Stenomesius japonicus (Ashmead) Hym.: Eulophidae 269
Stephanoderes hampei, see Hypothenemus hampei 158
stephanoderis, Cephalonomia
stepicola, Sphegigaster
stercorator orgyiae, Iseropus
sternodontis, Sarcodexia
Sticholotis quatrosignata Weise Col.: Coccinellidae 146
Stictopisthus africanus, see Mesochorus africanus 28
Stiretrus anchorago (Fabricius) Col.: Pentatomidae 331
striaditera, Hololepta
striata, Trathala
striaticeps, Psix
striatipes, Sympiesis
Sturmia atropivora, see Zygobothria atropivora 12
Sturmia auratocauda, see Cadurcia auratocauda 22
Sturmia bimaculata, see Palexorista inconspicua 23
Sturmia dilabida Villeneuve Dip.: Tachinidae 12, 16
Sturmia macrophallus, see Zygobothria ciliata 12
Sturmia parachrysops Bezzi Dip.: Tachinidae 190
subaenea, Oxyharma
subaenea, Pterosema
subaeneus, Thysanus
subdepressum, Dactylosternum
subimpictus, Phonoctonus
sublimbalis, Deanolis
submetallicus, Ooencyrtus
subquadratum, Dactylosternum
subvillosus, Scymnus

523

326, 348

524

Biological Control of Insect Pests: Southeast Asian Prospects

sulphurea, Cheilomenes
suppressalis, Chilo
suturalis, Brumus
Sycanus indagator StŒl Col.: Reduviidae 331
syleptae, Apanteles
syleptae, Eurytoma
Syllepte derogata Fabricius Lep.: Pyralidae 28, 194
Sympherobius barberi (Banks) Neu.: Chrysopidae 291, 295, 298, 305
Sympherobius sanctus Tjeder Neu.: Chrysopidae 291, 303
Sympiesis Hym.: Eulophidae 264, 269, 276, 279
Sympiesis gregori Hym.: Eulophidae 269, 276
Sympiesis striatipes (Ashmead) Hym.: Eulophidae 270, 274, 275, 277
Sympiesomorpha mikan, see Stenomesius japonicus 269
Synopeas rhanis (Walker) Hym.: Platygasteridae 80
Syntomopus Hym.: Pteromalidae 244
Syntomopus shakespearei (Girault) Hym.: Pteromalidae 244, 254
Syrphophagus africanus Gahan Hym.: Encyrtidae 68
Syrphophagus aphidivora (Mayr) Hym.: Encyrtidae 42, 68, 72
Syrphophagus taiwanus Hayat and Lin Hym.: Encyrtidae 123, 125
Syrphus Dip.: Syrphidae 43, 67, 69, 293, 300
Syrphus balteatus, see Episyrphus balteatus 43
Syrphus confrater, see Eupeodes confrater 43
tachinomoides, Euphorocera
taiwanus, Syrphophagus
Tamarixia Hym.: Eulophidae 128, 133
Tamarixia dryi (Waterston) Hym.: Eulophidae 129, 130
Tamarixia leucaenae Bou‹ek Hym.: Eulophidae 134
Tamarixia radiata (Waterston) Hym.: Eulophidae 113, 120, 121, 123Ð134
Tapinoma Hym.: Formicidae 275
Technomyrmex detorquens Walker Hym.: Formicidae 153
Telenomus Hym.: Scelionidae 12, 14, 15, 201, 205, 213, 218, 220, 221, 227, 233, 326
Telenomus acrobates Giard. Hym.: Scelionidae 306
Telenomus chloropus (Thomson) Hym.: Scelionidae 200, 205, 211Ð213, 217, 221, 224,
227, 229, 234
Telenomus comperei Crawford Hym.: Scelionidae 205, 226
Telenomus cristatus Johnson Hym.: Scelionidae 205
Telenomus cyrus Nixon Hym.: Scelionidae 206, 230

Scientific Index

525

Telenomus gifuensis Ashmead Hym.: Scelionidae 206, 212, 221, 224
Telenomus mormideae Costa Lima Hym.: Scelionidae 206, 220, 221
Telenomus nakagawai, see Telenomus chloropus 211, 224, 229
Telenomus pacificus (Gahan) Hym.: Scelionidae 205, 226
Telenomus podisi (Ashmead) Hym.: Scelionidae 205, 221
Telenomus seychellensis Kieffer Hym.: Scelionidae 205, 220
Telenomus solitus Johnson Hym.: Scelionidae 326
Teleopterus Hym.: Eulophidae 270, 272, 288
Teleopterus delucchii Bou‹ek Hym.: Eulophidae 270, 278
tenellus, Gelis
testaceipes, Lysiphlebus
testaceus, Pristomerus
testulalis, Maruca
tetracanthus, Zelus
Tetramorium bicarinatum (Nylander) Hym.: Formicidae 85, 92, 100, 101
Tetramorium guineense, see Tetramorium bicarinatum 92, 100
Tetrastichus Hym.: Eulophidae 120, 123, 125, 129, 131, 133, 241, 246, 270, 273, 274,
276, 277, 285
Tetrastichus ayyari, see Tetrastichus howardi 24
Tetrastichus howardi (Olliff) Hym.: Eulophidae 24, 29
Tetrastichus phyllocnistoides, see Citrostichus phyllocnistoides 268
Tetrastichus radiatus, see Tamarixia radiata 121
texanus, Chelonus
thalense, Trichogramma
theclarum, Aplomya
theobromae, Aenasius
theristis, Pammene
Thopeutis intacta Snellen Lep.: Pyralidae 284
thyantae, Trissolcus
Thyreocephalus interocularis Eppelsheim Col.: Staphylinidae 85, 92, 93, 103
Thysanus niger Ashmead Hym.: Encyrtidae 148
Thysanus subaeneus Forst. Hym.: Encyrtidae 306
tibialis, Brachymeria
tibialis, Microcharops
tibialis, Paragus
Timberlakia gilva Prinsloo Hym.: Encyrtidae 295, 298
timidus, Micromus
tischeriae, Elasmus

526

Biological Control of Insect Pests: Southeast Asian Prospects

Toxares macrosiphophagum Shuja Uddin Hym.: Aphidiidae 56
Toxares zakai Shuja Uddin Hym.: Aphidiidae 41
Toxoptera aurantii (Boyer de Fonscolombe) Hem.: Aphididae 64, 75, 79
transcaspicus, Aphidius
transvena, Encarsia
transversalis, Coccinella
transversoguttata, Coccinella
Trathala flavoorbitalis (Cameron) Hym.: Ichneumonidae 185, 191Ð193, 195
Trathala striata Cameron Hym.: Ichneumonidae 191
trepidulus, Scymnus
Trichogramma Hym.: Trichogrammatidae 13, 14, 16, 21, 25, 30, 195, 317, 321, 327, 341
Trichogramma achaeae Nagaraja & Nagarkatti Hym.: Trichogrammatidae 13Ð16
Trichogramma agriae Nagaraja Hym.: Trichogrammatidae 13Ð16
Trichogramma australicum Girault Hym.: Trichogrammatidae 13Ð16, 326
Trichogramma brevicapillum Pinto & Platner Hym.: Trichogrammatidae 326
Trichogramma chilonis Ishii Hym.: Trichogrammatidae 13, 14, 16, 25, 29, 30, 111
Trichogramma chilotraeae Nagaraja and Nagarkatti Hym.: Trichogrammatidae 11, 326
Trichogramma confusum Viggiani Hym.: Trichogrammatidae 13, 15
Trichogramma deion Pinto & Oatman Hym.: Trichogrammatidae 326
Trichogramma dendrolimi Matsumura Hym.: Trichogrammatidae 21, 25, 29
Trichogramma evanescens Westwood Hym.: Trichogrammatidae 326, 344
Trichogramma exiguum Pinto & Platner Hym.: Trichogrammatidae 326
Trichogramma japonicum Ashmead Hym.: Trichogrammatidae 25, 30, 326
Trichogramma minutum Riley Hym.: Trichogrammatidae 13, 15, 25, 27, 29, 326, 339,
344
Trichogramma platneri Nagarkatti Hym.: Trichogrammatidae 326, 344, 346
Trichogramma pretiosum Riley Hym.: Trichogrammatidae 27, 327, 337, 338, 344, 346
Trichogramma semifumatum (Perkins) Hym.: Trichogrammatidae 327, 340
Trichogramma thalense Pinto & Oatman Hym.: Trichogrammatidae 327
Trichoplusia ni HŸbner Lep.: Noctuidae 1, 2, 317Ð347
Trichopoda Dip.: Tachinidae 203, 208, 232
Trichopoda giacomellii (Blanchard) Dip.: Tachinidae 202, 211, 218, 220, 221, 225, 226,
231, 232, 234
Trichopoda gustavoi, see Trichopoda giacomellii 202
Trichopoda lanipes (Fabricius) Dip.: Tachinidae 202, 232
Trichopoda nigrifrontalis, see Trichopoda giacomelli 202
Trichopoda pennipes (Fabricius) Dip.: Tachinidae 197, 201, 208, 209, 212Ð215, 217,
221, 224Ð226, 230, 231, 233

Scientific Index

527

Trichopoda pilipes (Fabricius) Dip.: Tachinidae 197, 203, 211Ð214, 217, 221, 225, 231,
233
trifasciatus, Closterocerus
trifolii, Liriomyza
Trigonogastra agromyzae, see Sphegigaster voltairei 245, 254
Trigonogastra rugosa, see Sphegigaster rugosa 254
trilongifasciatus, Leptomastix
trinidadensis, Ooencyrtus
Triommata coccidivora (Felt) Dip.: Cecidomyidae 293, 302
Trioxys Hym.: Aphidiidae 42, 57
Trioxys acalephae (Marshall) Hym.: Aphidiidae 41, 56
Trioxys angelicae (Haliday) Hym.: Aphidiidae 41, 56, 65, 71, 78
Trioxys asiaticus Telenga Hym.: Aphidiidae 41, 56
Trioxys auctus (Haliday) Hym.: Aphidiidae 41, 56
Trioxys basicurvus Shuja Uddin Hym.: Aphidiidae 56, 64
Trioxys centaureae (Haliday) Hym.: Aphidiidae 41
Trioxys cirsii (Curtis) Hym.: Aphidiidae 41
Trioxys communis Gahan Hym.: Aphidiidae 56, 63, 66Ð68, 78, 82, 83
Trioxys complanatus Quilis Hym.: Aphidiidae 42, 56
Trioxys equatus Samanta, Tamili and Raychaudhuri Hym.: Aphidiidae 56
Trioxys hokkaidensis Takada Hym.: Aphidiidae 42
Trioxys indicus Subba Rao & Sharma Hym.: Aphidiidae 42, 57, 61Ð65, 78, 79, 82, 83
Trioxys nearctaphidis (Mackauer) Hym.: Aphidiidae 42
Trioxys pallidus Haliday Hym.: Aphidiidae 57
Trioxys rietscheli Mackauer Hym.: Aphidiidae 57, 68
Trioxys rubicola Shuja Uddin Hym.: Aphidiidae 64
Trioxys sinensis Mackauer Hym.: Aphidiidae 42, 57, 67
Trioza citroimpura Yang and Li Hem.: Psyllidae 116
Trioza eastopi, see Trioza litseae 129
Trioza erytreae (Del Guerico) Hem.: Psyllidae 119, 120, 129, 130
Trioza litseae Bordaga Hem.: Psyllidae 129
Trissolcus Hym.: Scelionidae 201, 206, 211, 221, 226, 227, 233
Trissolcus aloysiisabaudiae (Fouts) Hym.: Scelionidae 206, 220
Trissolcus basalis (Wollaston) Hym.: Scelionidae 197, 201, 206, 209, 211Ð228, 230
Trissolcus brochymenae (Ashmead) Hym.: Scelionidae 206
Trissolcus crypticus Clarke Hym.: Scelionidae 207, 210, 211
Trissolcus euschisti Ashmead Hym.: Scelionidae 207
Trissolcus hullensis (Harrington) Hym.: Scelionidae 207

528

Biological Control of Insect Pests: Southeast Asian Prospects

Trissolcus lepelleyi (Nixon) Hym.: Scelionidae 207, 220
Trissolcus lodosi (Szab—) Hym.: Scelionidae 207
Trissolcus maro Nixon Hym.: Scelionidae 207, 220
Trissolcus mitsukurii (Ashmead) Hym.: Scelionidae 206, 211Ð215, 217, 221, 224, 229
Trissolcus oenone (Dodd) Hym.: Scelionidae 206
Trissolcus ogyges (Dodd) Hym.: Scelionidae 206
Trissolcus rudus Le Hym.: Scelionidae 206
Trissolcus scuticarinatus (Costa Lima) Hym.: Scelionidae 206
Trissolcus sipius (Nixon) Hym.: Scelionidae 206, 220
Trissolcus solocis Johnson Hym.: Scelionidae 206
Trissolcus thyantae Ashmead Hym.: Scelionidae 206
Trissolcus urichi Hym.: Scelionidae 206
Trissolcus utahensis Hym.: Scelionidae 206
tristicolor, Orius
tristis, Anasa
Trogus exaltatorius Panzer Hym.: Ichneumonidae 12
Tropidophryne melvillei Compere Hym.: Encyrtidae 309
truncatellum, Copidosoma
ultimus, Gambrus
uncinatus, Scymnus
undecimpunctata, Coccinella
unicolor, Leptochirus
unicolor, Priochirus
urichi, Trissolcus
urozonus, Eupelmus
urticae, Aphidius
utahensis, Trissolcus
uzbekistanicus, Aphidius
v-nigrum, Olla
varicornis, Hemiptarsenus
variegata, Adonia
variegata, Hippodamia
variegatus, Cirrospilus
varipes, Aphelinus
venator, Lissauchenius
ventralis, Rhizobius

Scientific Index

Vespula pensylvanica (Saussure) Hym.: Vespidae 333
vicina, Cheilomenes
Vincentodiplosis pseudococci (Felt) Dip.: Cecidomyiidae 145, 151, 156
viridicoxa, Callitula
viridicoxa, Eurydinotellus
viridula, Nezara
Visnuella brevipetiolatu, see Zaommomentedon brevipetiolatus 270, 275
vitis, Pseudococcus
vitodurense, Pachyneuron
vitrata, Maruca
vitripennis, Glyptapanteles
vittatus, Cirrospilus
vittatus, Collops
vittegera, Paranaemia
voltairei, Sphegigaster
volucre, Praon
Voria edentata (Baranof) Dip.: Tachinidae 328
Voria ruralis (FallŽn) Dip.: Tachinidae 317, 328, 336Ð341, 345Ð347
vulgaris, Phryxe
Vulgichneumon brevicinctor (Say) Hym.: Ichneumonidae 326, 348
walkeri, Chartocerus
wallacii, Cryptolaemus
Wasmannia auropunctata (Roger) Hym.: Formicidae 174
Winthemia Dip.: Tachinidae 329, 337
Winthemia dasyops (Wiedemann) Dip.: Tachinidae 21, 23, 28
Winthemia montana Rein. Dip.: Tachinidae 328
Winthemia pinguis Dip.: Tachinidae 337
Winthemia pyrrhopyga (Wiedemann) Dip.: Tachinidae 337
Winthemia quadripustulata (Fabricius) Dip.: Tachinidae 328
Winthemia rufopicta (Bigot) Dip.: Tachinidae 329
Xanthodes graellsii (Feisthamel) Lep.: Noctuidae 30
Xanthogramma aegyptium, see Ischiodon aegyptius 43
Xanthopimpla punctata (Fabricius) Hym.: Ichneumonidae 25, 191, 192
Xenoencyrtus Hym.: Encyrtidae 204
Xenoencyrtus hemipterus (Girault) Hym.: Encyrtidae 204, 211, 213, 214, 218, 221
Xenoencyrtus niger, see Xenoencyrtus hemipterus 204, 211, 213, 221

529

530

Biological Control of Insect Pests: Southeast Asian Prospects

Xenoencyrtus rubricatus Riek Hym.: Encyrtidae
xylostella, Plutella

204

yakutatensis, Cotesia
yasudi, Callitula
Zacharops narangae Cushman Hym.: Braconidae 25
Zagrammosoma Hym.: Braconidae 278
Zagrammosoma multilineatum (Ashmead) Hym.: Eulophidae 270, 273, 278
zakai, Toxares
Zaommomentedon Hym.: Eulophidae 270, 276
Zaommomentedon brevipetiolatus Kamijo Hym.: Eulophidae 270, 275, 277, 281, 285
Zaplatycerus fullawayi Timberlake Hym.: Encyrtidae 149
zehntneri, Elasmus
Zelus bilobus Say Hem.: Reduviidae 331
Zelus exsaguis StŒl Hem.: Reduviidae 331
Zelus renardii Kalenati Hem.: Reduviidae 331
Zelus tetracanthus StŒl Hem.: Reduviidae 331
Zenilla blanda blanda (Osten Sacken) Dip.: Tachinidae 329
Zenillia cosmophilae, see Carcelia cosmophilae 22
Zenillia noctuae, see Carcelia illota 20
zizyphi, Aphis
Zygobothria atropivora (Robineau-Desvoidy) Dip.: Tachinidae 12, 16
Zygobothria ciliata (Wulp) Dip.: Tachinidae 12, 15, 23

531

7 General Index
abelmoschus, Hibiscus
aconitifolia, Vigna
Acridotheres tristis 26
Aegle marmelos 262
alatae 34, 35, 46, 70
alfalfa looper, see Autographa californica 342
Allothrombium pulvinum 58, 63
Alseodaphne semicarpifolia 262
Althaea rosea 19
Amaranthus 19
Ananas comosus 142
anise, see Clausena anisumolens 117
anisopliae, Metarhizium
anisumolens, Clausena
annuus, Helianthus
antiquorum, Colocasia
Apocynum venotum 29
apterae 34, 46, 47
Arabian coffee, see Coffea arabica 159, 165, 181
arabica, Coffea 181
Arbutilon 19
areca palm 144
Argentine ant, see Iridomyrmex humilis 144
Arthrobotrys 59
artificial diet 11, 35, 170, 177, 187, 320
arvensis, Convolvulus
Asian citrus psyllid, see Diaphorina citri 114
asiatica, Toddalia
asparagus 320
Aspergillus flavus 138, 298, 301, 334
astrigata, Pardosa
Atalantia 118
atropurpureum, Macroptilium
atropurpureus, Phaseolus
aurantiifolia, Citrus
aurea, Vigna

532

Biological Control of Insect Pests: Southeast Asian Prospects

aureus, Phaseolus
australisiaca, Microcitrus
avocado 108
Bacillus thuringiensis 21, 27, 320, 334
Bacillus thuringiensis wuhanensis 26
bacteriophora, Heterorhabditis
baculovirus 191, 342
banana, see Musa sapientum 68, 85--104, 144, 145, 154, 163, 289
banana aphid, see Pentalonia nigronervosa 67, 68, 74
banana weevil borer, see Cosmopolites sordidus 85, 86
barley 5
bassiana, Beauveria
batatas, Ipomoea
bats 321
bean, see Phaseolus vulgaris 35, 47, 63, 161, 199, 210, 219, 236,
238, 251, 320
bean fly, see Ophiomyia phaseoli 235, 236
bean stem borer, see Melanagromyza sojae
Beauveria 128, 167, 199
Beauveria bassiana 59, 69, 93, 122, 128, 157, 166, 169, 170, 174-176, 182, 183, 334
beet armyworm, see Spodoptera exigua
bele, see Hibiscus manihot 19
Bergera koenigii 116, 117
bigheaded ant, see Pheidole megacephalaI 144
bindweed, see Convulvulus arvensis 11
black berry nightshade, see Solanum nigrum 187
black citrus aphid, see Toxoptera aurantii 75
black gram, see Vigna mungo 237
black legume aphid, see Aphis craccivora 34
bluish dogbane, see Apocynum venotum 29
Botrytis stephanoderis see Beauveria bassiana 169
bottle gourd 78
Bouea burmanica 105, 108
brinjal, see Solanum melongena 185
brinjal fruit borer, see Leucinodes orbonalis 186
brinjal stem borer, see Euzophera ferticella 194
broccoli 321

General Index

brunneum, Metarrhizium
burmanica, Bouea
cabbage 317, 320, 321, 337
cabbage aphid, see Brevicoryne brassicae 48
cabbage looper, see Trichoplusia ni 317, 318
cabbage white butterfly, see Pieris rapae 337
caerulea, Geoplana
caerulea, Kontikia
Caesalpinia 163
cairica, Ipomoea
cajan, Cajanus
Cajanus cajan 237
calcarata, Vigna
caloxylon, Merrillia
Canavalia ensiformis 238
canephora, Coffea
cannabinus, Hibiscus
canola 320
cantaloupe 320
cape gooseberry 187
Capsella 35
capsicum 187, 200, 320
carcocapsae, Steinernema
carrot 320
cassava 289
castor, see Ricinus communis 232
Catharanthus roseus 116
catimor coffee 176
cauliflower 320
celery 320, 341
Centrosema 163
Cephalosporium lecanii 59, 69, 122, 128
Chenopodium 338
chick pea 236
chico 108
chinense, Clerodendrum
Chinese cabbage 63
Chiracanthium inclusum 278

533

534

Biological Control of Insect Pests: Southeast Asian Prospects

chlordimeform 27
chrysanthemum 5, 65
Ciconia nigra 16
Cinnamomum zeylanica 262
cinnamomum, Jasminum
citri, Xanthomonas
citricola scale, see Coccus pseudomagnoliarum
citron, see Citrus medica 117
Citrullus lanatus 19

299

Citrus 35, 47, 64--66, 77, 113--134, 257--316
Citrus aurantifolia 117, 262
Citrus hystrix 117
Citrus limon 117, 262
Citrus madurensis 117
Citrus maxima 117
Citrus maxima var. racemosa 117
Citrus medica 117, 262
Citrus reticulata 115, 117
Citrus sinensis 117
citrus canker fungus, see Xanthomonas citri 263
citrus greening 113, 114, 116, 119, 120, 128--130
citrus leaf mottle 128, 130
citrus leafminer, see Phyllocnistis citrella 257, 258
citrus mealybug, see Planococcus citri 287, 288
citrus psyllid, see Diaphorina citri 114
citrus tristeza virus 36, 47
citrus vein phloem degeneration 128
Cladosporium oxysporum 298, 305
Clausena anisumolens 116, 117
Clausena excavata 117
Clausena indica 118
Clausena lansium 117
Clerodendrum chinense 14, 15
Clubiona 278
cocoa 35, 47, 289
coconut bug, see Amblypelta cocophaga 226
coconut spathe bug, see Axiagastus campbelli 226
coerulia, Tweedia

General Index

Coffea 163, 288
Coffea arabica 158, 159, 165, 176, 181
Coffea canephora 159, 165, 181
coffeanum, Colleotrichium
coffee 35, 47, 144, 157--183, 289, 290, 302--304
coffee berry borer, see Hypothenemus hampei 158
coffee berry disease, see Colletotrichum coffeanum 170
coffee leaf rust, see Hemileia vastatrix 170, 176
Colleotrichium coffeanum 170
Colocasia antiquorum 14, 15
Colocasia esculenta 71
communis, Ricinus
comosus, Ananas
Convolvulus arvensis 11
cotton 17, 19, 21, 27--30, 46, 47, 60, 62, 63, 65, 68, 69, 78, 137, 161,
200, 220, 320, 335, 338, 340--345, 347
cotton aphid, see Aphis gossypii 46
cotton semi looper, see Anomis flava 18
cotton stainer, see Dysdercus cingulatus 135, 136
cowpea, see Vigna unguiculata or Vigna sinensis 19, 35, 36, 200,
219, 222, 227, 236, 238, 239
cowpea aphid, see Aphis craccivora 34
crazy ant, see Paratrechina longicornis 145
creeping sensitive plant, see Mimosa invisa 134
croceus, Xysticus
Crotalaria 163, 251--254
Crotalaria juncea 238
Crotalaria laburnifolia 238, 245
Crotalaria mucronata 238
cucumber 47, 64, 66, 67, 73, 83, 187, 320
curry bush, see Bergera koenigii 117
custard apple 299, 300
Cyclosa insulana 65
cyfluthrin 112

535

536

Biological Control of Insect Pests: Southeast Asian Prospects

date 289
DD136 Steinernema carcocapsae 138
Deccan hemp, see Hibiscus cannabinus 19
deltamethrin 112
Dendroica palmarum 333
desi cotton 19
Dialium lacourtianum 163
diamondback moth, see Plutella xylostella 337
diazoma, Thelohania
Dioscorea 164
dissecta, Merremia
Dolichos lablab, see Lablab niger 238
egg plant, see Solanum melongena 47, 64, 65, 78, 83, 185--195
egg plant fruit and shoot borer, see Leucinodes orbonalis 186
elephant lemon, see Citrus medica 262
endosulfan 180, 182
ensiformis, Canavalia
Entomophthora 13, 59, 335
Entomophthora exitialis 59
Entomophthora fresenii 298
Entomophthora fumosa 298, 300
Entomophthora gammae 334
Entomophthora sp. ÔgrylliÕ type 13
Entomophthora sphaerosperma 334
Eremocitrus glauca 262
Erigonidium graminicolum 26, 62
esculenta, Colocasia
esculentum, Lycopersicon
esculentus, Hibiscus
excavata, Clausena
exitialis, Entomophthora
exotica, Murraya

General Index

faba, Vicia
feltiae, Steinernema
fig 288, 289, 306
fire ant, see Solenopsis geminata 144
flavus, Aspergillus
flax 231
Fortunella 116, 117
French bean, see Phaseolus vulgaris 237, 245, 249, 253
fresenii, Entomophthora
fresenii, Neozygites
fruit sucking moth 19
fumosoroseus, Paecilomyces
Fusarium 298
Fusarium lateritium 122, 128
Garcinia mangostana 262
gardenia 290
Geoplana caerulea see Kontikia caerulea 100
glasshouse 35, 59, 66, 69, 71, 73, 77, 288, 290, 305, 315, 316
glauca, Eremocitrus
glauca, Nicotiana
glaucum, Pennisetum
Gliricidia 63
Gliricidia maculata 68
Gliricidia sepium 35, 164
glutinesa, Swinglea
Glycine max 67, 219, 238, 245, 246
Glycine soja 248
golden gram, see Vigna aurea 237
graminicolum, Erigonidium
granulosis virus 21, 26
grape 19, 119, 199, 288--290, 306, 315
grapefruit 303, 305
green gram, see Vigna aurea or Vigna radiata 19, 237, 247
green lacewing, see Chrysoperla carnea 43
green peach aphid, see Myzus persicae 74
green semi looper, see Anomis flava 18
green vegetable bug, see Nezara viridula 198
groundnut 35, 144, 199, 226
groundnut aphid, see Aphis craccivora 34

537

538

Biological Control of Insect Pests: Southeast Asian Prospects

guava 47, 108, 200, 302
gypsy moth 225
Habana velox 278
haricot bean, see Phaseolus vulgaris 237
hederifolia, Ipomoea
Helianthus annuus 219
Hemileia vastatrix 170
Hemipterotarseius 137, 138
Hentzia palmarum 279
Heterorhabditis 93, 94, 167, 169
Heterorhabditis bacteriophora 94
Heterorhabditis zealandica 94
Hibiscus 60, 64, 76, 83, 137, 163
Hibiscus abelmoschus 19
Hibiscus cannabinus 19
Hibiscus esculentus 19, 67
Hibiscus manihot 19
Hibiscus rosa-sinensis 19
Hibiscus sabadariffa 19
hirsutum cotton 19
hollyhock, see Althaea rosea 19
honey 226, 284, 313, 344
honeydew 47, 74, 82, 132, 144, 156, 290, 303, 315
horehound bug, see Agonoscelis rutila 218
huanglunbin 116
hyacinth bean, see Lablab niger 238
hystrix, Citrus
Indian mynah 21, 29
indica, Clausena
indica, Ipomoea
indicum, Sesamum
indicum, Solanum
insulana, Cyclosa
invisa, Mimosa
Ipomoea 15
Ipomoea batatas 11, 19
Ipomoea cairica 11

General Index

Ipomoea hederifolia 11
Ipomoea indica 11
Ipomoea pescapreae 11
jackfruit 108
jasmin orange, see Murraya paniculata 116, 117
Jasminum cinnamomum 262
Jasminum humile 262
Jasminum sambac 262
javanicus, Paecilomyces
javanicus, Spicaria
jute, see Hibiscus sabadariffa 19, 230
kapok, see Hibiscus cannabinus 137
kenaf 17, 19, 27, 30
kidney bean, see Phaseolus vulgaris 76
koenigii, Bergera
koenigii, Murraya
Kontikia caerulea 100
kumquat, see Fortunella 117
lablab, see Lablab niger 200, 246
Lablab niger 238
laburnifolia, Crotalaria
lacourtianum, Dialium
lanatus, Citrullus
lanceolata, Vepris
lansium, Clausena
lateritium, Fusarium
lathryoides, Macroptilium
lathyroides, Phaseolus
leaf mottle 128
lecanii, Cephalosporium
lecanii, Verticillium
Leea 19
lemon, see Citrus limon 116, 117, 130, 262, 289, 302, 312
Leonurus sibericus 232
lettuce 317, 320, 338, 340
lettuce necrotic yellows 62

539

540

Biological Control of Insect Pests: Southeast Asian Prospects

Leucaena 163
Leucaena leucocephala 164
Ligustrum 163
likubin 130
lime, see Citrus aurantifolia 117, 130, 262, 274, 302, 312
limon, Citrus
little red fire ant, see Wasmannia auropunctata 174
looplure 319
loquat 164
Loranthus 262
lucerne 35, 199, 338, 339, 344
lunatus, Phaseolus
lupin, see Lupinus 35
Lupinus 35
Lycopersicon esculentum 19, 187
macadamia 19, 220, 222--224, 289
Macroptilium atropurpureum 238
Macroptilium lathryoides 238
maculata, Gliricidia
Madagascar periwinkle, see Catharanthus roseus 116
madurensis, Citrus
maize 14, 137, 161, 199, 320
Malva 338
mandarin, see Citrus reticulata 115, 117, 302
Mangifera 108
Mangifera indica 105, 106, 108, 109
Mangifera minor 105, 108
Mangifera odorata 105, 108
mango, see Mangifera indica 47, 105--112, 187, 289, 290
mangostana, Garcinia
mangosteen, see Garcinia mangostana 262
manihot, Hibiscus
Manila hemp, see Musa textilis 89, 137
marcescens, Serratia
marmelos, Aegle
Marpissa tigrina 122, 133
Mauritius papeda, see Citrus hystrix 117

General Index

max, Glycine 35
maxima var. racemosa, Citrus
maxima, Citrus
medic, see Medicago
medica, Citrus
Medicago 35
Melanospora 128
melon, see Citrullus lanatus 19, 65
melon aphid, see Aphis gossypii 46
melongena, Solanum
Merremia dissecta 11
Merrillia caloxylon 117
Metarhizium 167
Metarhizium anisopliae 93, 169, 175, 334
Metarrhizium brunneum 334
methidathion 302
methomyl 130
Microcitrus australisiaca 117
Mimosa invisa 134
minor, Mangifera
Misumenops tricuspidatus 26, 62
Misumena ratia 333
Mohinga 101
morning glory, see Ipomoea hederifolia 11
moth bean, see Vigna aconitifolia 11, 237
mucronata, Crotalaria
mung bean, see Vigna radiata or Vigna aurea 11, 219, 237, 248
mungo, Vigna
Murraya exotica 118, 262
Murraya koenigii, see Bergera koenigii 117, 262
Murraya paniculata 115--117, 127--131, 133
Musa 86
Musa sapientum 89
Musa textilis 89
muskmallow, see Hibiscus abelmoschus 19
mustard 338
myriacanthum, Solanum

541

542

Biological Control of Insect Pests: Southeast Asian Prospects

Neoaplectana carpocapsae, see Steinernema feltiae
Neozygites fresenii 59, 69
Nerium 60
Nicotiana glauca 338, 339
niger, Lablab
nigra, Ciconia
nigrum, Solanum
Nomuraea rileyi 169, 334, 335
Nosema trichoplusiae 334

194

octomaculatum, Theridion
odorata, Mangifera
oil palm
okra, see Hibiscus esculentus 17, 19, 35, 47, 65, 137, 227
okra semi looper, see Anomis flava 18
oleander aphid, see Aphis nerii 73, 76
oleander, see Nerium 60, 77
orange, see Citrus sinensis 117, 199, 302, 304
oriental stink bug, see Nezara antennata 233
oviparae 34
Oxyanthus 163
Oxyopes salticus 323
oxysporum, Cladosporium
Paecilomyces 122, 128
Paecilomyces fumosoroseus 59, 69
Paecilomyces javanicus 167, 169
Paecilomyces tenuipes 169
palmarum, Dendroica
Panagrolaimus 169
Pandanus 144
panduratus, Phaseolus
paniculata, Murraya
papaya 108
paprika 35, 47
paraffin oil 94
Pardosa 322
Pardosa astrigata 63

General Index

parsley 320
Passerculus sandwichensis 333
passionfruit 199, 289, 299, 300
pea, see Pisum sativum 187, 199, 238, 246, 320
peanut 161
pear 19
pearl millet, see Pennisetum glaucum 137
pecan 199, 234
Pennisetum americanum, see Pennisetum glaucum 137
Pennisetum glaucum 137
petroleum oil 119, 133, 263, 264, 286
pescapreae, Ipomoea
Phaseolus 11, 163, 237
Phaseolus aureus 67, 247
Phaseolus lunatus 164
Phaseolus panduratus 238
Phaseolus semierectus 238
Phaseolus vulgaris 76, 219, 236--238, 245
pheromone 87, 112, 137, 161, 187, 208, 217, 218, 259, 286, 289,
319
Phidippus 333
Phidippus regius 333
picorna virus 201
pigeon pea, see Cajanus cajan 6, 35, 64, 77--79, 236, 237
pineapple, see Ananas comosus 141--156
pineapple mealybug wilt 144, 145, 152, 156
pineapple mealybug, see Dysmicocus brevipes 142
pineapple scale, see Diaspis bromeliae 153
Pisum sativum 238
planarian 100
plantain 89
plant resistance 5, 6, 11, 88, 187, 238, 262, 320
polyacrylamide gel 95
polyhedrosis virus 21, 26, 317, 321, 334, 337, 338, 340
pomegranate 288, 306
Poncirus 116
Poncirus trifoliata 117
Pongamia semicarpifolia 262

543

544

Biological Control of Insect Pests: Southeast Asian Prospects

potato, see Solanum tuberosum 47, 65, 187, 199, 289, 320
pseudocacia, Robinia
prothiophos 94
Psychotria 164
pulvinum, Allothrombium
pummelo, see Citrus maxima var. racemosa 116, 117, 260, 277
pumpkin, butternut 289
radiata, Vigna
rape, see canola 320
ratia, Misumena
red banded borer, see Deanolis sublimbalis 106
red banded mango caterpillar, see Deanolis albizonalis 106
red cotton bug, see Dysdercus cingulatus 136
red seed bug, see Dysdercus cingulatus 136
regius, Phidippus
reticulata, Citrus
Rhamnus 64, 83
rhodes grass scale, see Antonina graminis 155
rice 144, 200, 230, 238
rice bean, see Vigna calcarata 237
Ricinus 19
Ricinus communis 232
rikettsia 334
rileyi, Nomuraea
Robinia pseudacacia 76
robusta coffee, see Coffea canephora 159, 165, 181
rosa-sinensis, Hibiscus
rosea, Althaea
roselle, see Hibiscus sabadariffa 19
roselle cotton 18
roseus, Catharanthus
Rubus 163
Rumex 35
runner bean, see Phaseolus vulgaris 237

General Index

sabadariffa, Hibiscus
safflower 194
salticus, Oxyopes
sambac, Jasminum
sandwichensis, Passerculus
santol 108
sapientum, Musa
semicarpifolia, Alseodaphne
semicarpifolia, Pongamia
semierectus, Phaseolus
sepium, Gliricidia
Serratia marcescens 334
sesame, see Sesamum indicum 200, 219
Sesamum indicum 219
Seville orange 286
shooflower, see Hibiscus rosa-sinensis 19
sibericus, Leonurus
Sida 19
sineguelas 108
sinensis, Citrus
sinensis, Vigna
sisal 144
snap bean, see Phaseolus vulgaris 237
soja, Glycine
Solanum 187
Solanum indicum 187
Solanum melongena 186, 187
Solanum myriacanthum 187
Solanum nigrum 187
Solanum tuberosum 187
Solanum xanthocarpum 187
sooty mould 44, 144, 300
sordidin 87
sorghum 5, 137, 199, 218, 230
southern green stink bug, see Nezara viridula 198
soybean, see Glycine max or G. soja 67, 144, 177, 199, 200, 201,
218, 219, 221--224, 226, 227, 229, 231, 232, 234, 236-238, 245--248, 320

545

546

Biological Control of Insect Pests: Southeast Asian Prospects

soybean stem borer, see Melanagromyza sojae 247
soybean top borer, see Melanagromyza dolichostigma 247
soybean, Davis 234
soybean, PI 717444 200, 234
sphaerosperma, Entomophthora
Spicaria javanicus, see Paecilomyces javanicus 169
Spicaria see Paecilomyces
spinach 199, 320
squash 46, 47, 76
squash bug, see Anasa tristis 230
star apple 108
Steinernema 93, 94
Steinernema carpocapsae 94, 138, 194, 263
Steinernema feltiae, see Steinernema carpocapsae 94
stephanoderis, Botrytis
strawberry 69
subterranean clover 35
sugarbeet 337
sugarcane 77, 144, 145, 152
sunflower, see Helianthus anuus 65, 194, 199, 219
swallow 166
sweet potato, see Ipomoea batatas 9, 11, 14, 16, 19, 187
sweet potato hawk moth, see Agrius convolvuli 10, 14
sweet potato hornworm, see Agrius convolvuli 10, 14
sweet potato weevil, see Cosmopolities sordidus 11
Swinglea glutinesa 118
tangerine 277
taro, see Colocasia esculenta 11, 47, 64, 71, 83, 153
tenuipes, Paecilomyces
Tephrosia 163
textilis, Musa
Thelohania diazoma 334
Theridion 65
Theridion octomaculatum 62
thuringiensis wuhanensis, Bacillus
thuringiensis, Bacillus
tigrina, Marpissa

General Index

tobacco 199, 289, 320
Toddalia asiatica 117
tomato, see Lysopersicum esculentum 19, 187, 195, 199, 200, 210,
218, 219, 223, 227, 317, 320, 335, 338, 344
toti virus 201
Trachelas volutus 278
transgenic line 320
tree tobacco, see Nicotiana glauca 338, 339
trichoplusiae, Nosema
tricuspidatus, Misumenops
trifoliata, Poncirus
trifoliata, Triphasia
Trifolium 35
Triphasia trifoliata 117
tristeza virus 34, 47
tristis, Acridotheres
tuberosum, Solanum
Tweedia coerulea 74
Uloborus 65
ungiculata, Vigna
urd bean, see Vigna mungo 11, 237
Urena 19, 137
vastatrix, Hemileia
venotum, Apocynum
Vepris lanceolata 118
Verticillium lecanii, see Cephalosporium lecanii 59, 69, 122, 128
vexillata, Vigna
Vicia 35
Vicia faba 67
Vigna 237
Vigna aconitifolia 237
Vigna aurea 237
Vigna calcarata 237
Vigna mungo 11, 14, 237
Vigna radiata 11, 14, 19, 219, 238
Vigna sinensis 248

547

548

Biological Control of Insect Pests: Southeast Asian Prospects

Vigna unguiculata 19, 68, 219, 238, 239, 245
Vigna vexillata 11
Vitis 163
vivapary 34
vulgaris, Phaseolus
watermelon 47, 320
wheat 231
white-bellied stork, see Ciconia nigra 16
wild radish 227
wild mung 11
woolly apple aphid, see Eriosoma lanigerum
xanthocarpum, Solanum
Xanthomonas citri 263
Xysticus croceus 62
zealandica, Heterorhabditis
zeylanica, Cinnamomum

72

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