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Pests of castor
By
Dr. U. Pirithiraj, P.hD.
Assistant Professor (Entomology)
JSACAT
Affiliated to Tamil Nadu Agricultural University
Borers
Shoot and capsule borer, Conogethes (=Dichocrocis)
punctiferalis, Crambidae (Pyraustidae), Lepidoptera
1
Dr. U. Pirithiraj, P.hD. (Entomology)
Nature of damage
Larvae feed on petiole and young leaves.
Also bore into capsule and peduncle
Symptom of damage
Capsules with bore holes, webbed together.
Peduncle and capsules show galleries made
of silk and frass
It is found from India and Pakistan through south-east
Asia to Australia
Eggs are laid on tender parts of plants
Pale greenish with
pinkish tinge, black
blotches and fine hairs
with dark head and
prothoracic shield
Pupation takes place in
cocoons of silk, inside the
stem or capsule
Yellowish with black spots on both pair of wings
Dr. U. Pirithiraj, P.hD. (Entomology)
Leaf feeders
Castor semilooper, Achaea janata, Dysgonia algira
(Parallelia algira), Noctuidae, Lepidoptera
2
Dr. U. Pirithiraj, P.hD. (Entomology)
Nature of damage
First instar larva nibbles on the leaves
Second instar makes holes
Late instars eating the leaves completely
Symptom of damage
Defoliation
Distribution: India, Pakistan, Sri Lanka, Thailand, Laos, Malaysia, southern
half of Europe and parts of North Africa
Eggs laid in batches of
six on both surfaces of
the leaves
Body colour velvety black. It
has a pair of reddish anal
processes
Pupates in loosely threaded
silken cocoon, on the ground
amongst wrapped up leaves
Dr. U. Pirithiraj, P.hD. (Entomology)
Forewings are pale-reddish brown.
Hindwings possess a medially white patch
and three large white patches on the outer
margin on a black background
Achaea janata
Dysgonia algira
Forewing with white band,
hindwing with a white median
band and grey outer margin.
Dr. U. Pirithiraj, P.hD. (Entomology)
Castor slug caterpillar, Latoia (=Parasa) lepida,
Cochlidiidae, Lepidoptera
3
Dr. U. Pirithiraj, P.hD. (Entomology)
Nature of damage
The slug-caterpillars feed on the leaves.
Young they remain in clusters and feed by
scrapping the green matter of the leaves on
the underside
Symptom of damage
Defoliation
It is a native minor pest found in the Indo-Malayan region, including India,
Sri Lanka, Vietnam, Malaysia and Indonesia
Eggs laid in batches of 20-30 on
the lower surface of leaves
A caterpillar is fleshy with yellowish-green
body bearing a greenish blue stripe it is called
blue-striped nettle grub. There are six rows of
spiny scoli on the dorsal surface while the
ventral body surface is flat. The spines are
highly irritating to touch
Pupation takes place on the tree trunk in
a hard shell-like, elliptical
Wings are greenish in colour fringed with
brown patches along the margins
Dr. U. Pirithiraj, P.hD. (Entomology)
Hairy caterpillar, Euproctis fraterna, Eribidae
(Lymantriidae), Lepidoptera
4
Dr. U. Pirithiraj, P.hD. (Entomology)
It is found in the Maldives, India, Sri Lanka and the Seychelles
Symptom of damage
Defoliation
Nature of damage
Caterpillars feed on the leaves
Full grown larva has red head and dark reddish
brown body covered with white hairs
Pupation takes place
inside the plant in a
yellowish cocoon
Medium sized, yellowish colour with
pale transverse lines and three black
spots on the border of the forewings
Dr. U. Pirithiraj, P.hD. (Entomology)
Hairy caterpillar, Olene mendosa (Dasychira
mendosa), Eribidae (Lymantriidae), Lepidoptera
5
Dr. U. Pirithiraj, P.hD. (Entomology)
Symptom of damage
Defoliation.
Nature of damage
Caterpillars feed on
the leaves.
Larva is greyish brown in
colour with dark prothoracic
and pre-anal tuft of hairs.
Pupates in a yellowish
silken cocoon
Bigger, yellowish
brown moth with
bulged abdomen
Eggs are off-white
with brown tops
It is found in India, Bangladesh, Sri Lanka, Indonesia, Taiwan, Thailand and Australia.
Hairy caterpillar, Somena scintillans (Porthesia
scintillans), Eribidae (Lymantriidae), Lepidoptera
6
Dr. U. Pirithiraj, P.hD. (Entomology)
Symptom of damage
Defoliation.
Nature of damage
Caterpillars feed on the leaves
Larva has yellowish brown
head. There are tufts of
hairs on the segments
between the true legs and
prolegs
Pupates in a yellowish silken cocoon
Forewings are brownish
with yellow spots on the
border
It is found in northern India, Sri Lanka, Myanmar and the Andaman Islands
Castor butterfly, Spiny caterpillar, Ariadne merione
(Ergolis merione), Nymphalidae, Lepidoptera
7
Dr. U. Pirithiraj, P.hD. (Entomology)
Symptom of damage
Defoliation
Nature of damage
Caterpillars lie on the upper
surface of the leaf. It feeds from
margin and cause defoliation
Species is found in South and Southeast Asia.
Brown colour with black wavy lines on wings
Sculptured eggs laid singly on
the leaves
Green body covered with branched hairs
and yellow stripe on dorsal side
Brownish chrysalis pupa Dr. U. Pirithiraj, P.hD. (Entomology)
Wooly bear, Olepa ricini (Pericallia ricini), Arctiidae,
Lepidoptera
8
Dr. U. Pirithiraj, P.hD. (Entomology)
Symptom of damage
Defoliation
Hindwings are pink or red
colour with black spots
Blackish brown
larva with red
head
Round and light
yellow
It is found in Bangladesh, India, Nepal, and Sri Lanka.
Nature of damage
Caterpillar feeds on the leaves
Brownish pupa
Tussock caterpillar, Orygyia postica (Notolopus
postica) , Eribidae (Lymantriidae), Lepidoptera
9
Dr. U. Pirithiraj, P.hD. (Entomology)
Symptom of damage
Defoliation
Nature of damage
Caterpillars of the moth feed on the leaves
Eggs are laid in clusters
Small adult with brown wings
Full grown larva possess a brown head, a pair of
long pencil of hairs projecting forwardly from the
prothorax, yellowish tuft of hairs arising from the
lateral side of the first two abdominal segment
and long brownish hairs arising from 8th
abdominal segment.
Sap feeders
Leafhopper, Empoasca flavescens, Cicadellidae,
Hemiptera
10
Dr. U. Pirithiraj, P.hD. (Entomology)
Throughout the tropics, subtropics and temperate areas
Nymphs and adult suck phloem sap from leaves
Whitefly, Trialeurodes ricini, T. rara, Aleyrodidae,
Hemiptera
11
Dr. U. Pirithiraj, P.hD. (Entomology)
Africa, the Middle East and Asia
Symptoms: Water soaked spots on the leaves
Thrips, Retithrips syriacus, Thripidae, Thysanoptera
12
Dr. U. Pirithiraj, P.hD. (Entomology)
Nymphs carries fecal matters
Damages the leaves
Widespread in Africa and India
Gall fly, Asphondylia ricini, Cecidomyiidae, Diptera
13
Dr. U. Pirithiraj, P.hD. (Entomology)
Damage is caused by maggots
As a result of feeding by them,
the buds develop into galls and
produce no fruits and seeds

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Pests of castor_Binomics_Identification_Dr.UPR.pdf

  • 1. Pests of castor By Dr. U. Pirithiraj, P.hD. Assistant Professor (Entomology) JSACAT Affiliated to Tamil Nadu Agricultural University
  • 3. Shoot and capsule borer, Conogethes (=Dichocrocis) punctiferalis, Crambidae (Pyraustidae), Lepidoptera 1 Dr. U. Pirithiraj, P.hD. (Entomology) Nature of damage Larvae feed on petiole and young leaves. Also bore into capsule and peduncle Symptom of damage Capsules with bore holes, webbed together. Peduncle and capsules show galleries made of silk and frass It is found from India and Pakistan through south-east Asia to Australia
  • 4. Eggs are laid on tender parts of plants Pale greenish with pinkish tinge, black blotches and fine hairs with dark head and prothoracic shield Pupation takes place in cocoons of silk, inside the stem or capsule Yellowish with black spots on both pair of wings Dr. U. Pirithiraj, P.hD. (Entomology)
  • 6. Castor semilooper, Achaea janata, Dysgonia algira (Parallelia algira), Noctuidae, Lepidoptera 2 Dr. U. Pirithiraj, P.hD. (Entomology) Nature of damage First instar larva nibbles on the leaves Second instar makes holes Late instars eating the leaves completely Symptom of damage Defoliation Distribution: India, Pakistan, Sri Lanka, Thailand, Laos, Malaysia, southern half of Europe and parts of North Africa
  • 7. Eggs laid in batches of six on both surfaces of the leaves Body colour velvety black. It has a pair of reddish anal processes Pupates in loosely threaded silken cocoon, on the ground amongst wrapped up leaves Dr. U. Pirithiraj, P.hD. (Entomology)
  • 8. Forewings are pale-reddish brown. Hindwings possess a medially white patch and three large white patches on the outer margin on a black background Achaea janata Dysgonia algira Forewing with white band, hindwing with a white median band and grey outer margin. Dr. U. Pirithiraj, P.hD. (Entomology)
  • 9. Castor slug caterpillar, Latoia (=Parasa) lepida, Cochlidiidae, Lepidoptera 3 Dr. U. Pirithiraj, P.hD. (Entomology) Nature of damage The slug-caterpillars feed on the leaves. Young they remain in clusters and feed by scrapping the green matter of the leaves on the underside Symptom of damage Defoliation It is a native minor pest found in the Indo-Malayan region, including India, Sri Lanka, Vietnam, Malaysia and Indonesia
  • 10. Eggs laid in batches of 20-30 on the lower surface of leaves A caterpillar is fleshy with yellowish-green body bearing a greenish blue stripe it is called blue-striped nettle grub. There are six rows of spiny scoli on the dorsal surface while the ventral body surface is flat. The spines are highly irritating to touch Pupation takes place on the tree trunk in a hard shell-like, elliptical Wings are greenish in colour fringed with brown patches along the margins Dr. U. Pirithiraj, P.hD. (Entomology)
  • 11. Hairy caterpillar, Euproctis fraterna, Eribidae (Lymantriidae), Lepidoptera 4 Dr. U. Pirithiraj, P.hD. (Entomology) It is found in the Maldives, India, Sri Lanka and the Seychelles Symptom of damage Defoliation Nature of damage Caterpillars feed on the leaves
  • 12. Full grown larva has red head and dark reddish brown body covered with white hairs Pupation takes place inside the plant in a yellowish cocoon Medium sized, yellowish colour with pale transverse lines and three black spots on the border of the forewings Dr. U. Pirithiraj, P.hD. (Entomology)
  • 13. Hairy caterpillar, Olene mendosa (Dasychira mendosa), Eribidae (Lymantriidae), Lepidoptera 5 Dr. U. Pirithiraj, P.hD. (Entomology) Symptom of damage Defoliation. Nature of damage Caterpillars feed on the leaves. Larva is greyish brown in colour with dark prothoracic and pre-anal tuft of hairs. Pupates in a yellowish silken cocoon Bigger, yellowish brown moth with bulged abdomen Eggs are off-white with brown tops It is found in India, Bangladesh, Sri Lanka, Indonesia, Taiwan, Thailand and Australia.
  • 14. Hairy caterpillar, Somena scintillans (Porthesia scintillans), Eribidae (Lymantriidae), Lepidoptera 6 Dr. U. Pirithiraj, P.hD. (Entomology) Symptom of damage Defoliation. Nature of damage Caterpillars feed on the leaves Larva has yellowish brown head. There are tufts of hairs on the segments between the true legs and prolegs Pupates in a yellowish silken cocoon Forewings are brownish with yellow spots on the border It is found in northern India, Sri Lanka, Myanmar and the Andaman Islands
  • 15. Castor butterfly, Spiny caterpillar, Ariadne merione (Ergolis merione), Nymphalidae, Lepidoptera 7 Dr. U. Pirithiraj, P.hD. (Entomology) Symptom of damage Defoliation Nature of damage Caterpillars lie on the upper surface of the leaf. It feeds from margin and cause defoliation Species is found in South and Southeast Asia.
  • 16. Brown colour with black wavy lines on wings Sculptured eggs laid singly on the leaves Green body covered with branched hairs and yellow stripe on dorsal side Brownish chrysalis pupa Dr. U. Pirithiraj, P.hD. (Entomology)
  • 17. Wooly bear, Olepa ricini (Pericallia ricini), Arctiidae, Lepidoptera 8 Dr. U. Pirithiraj, P.hD. (Entomology) Symptom of damage Defoliation Hindwings are pink or red colour with black spots Blackish brown larva with red head Round and light yellow It is found in Bangladesh, India, Nepal, and Sri Lanka. Nature of damage Caterpillar feeds on the leaves Brownish pupa
  • 18. Tussock caterpillar, Orygyia postica (Notolopus postica) , Eribidae (Lymantriidae), Lepidoptera 9 Dr. U. Pirithiraj, P.hD. (Entomology) Symptom of damage Defoliation Nature of damage Caterpillars of the moth feed on the leaves Eggs are laid in clusters
  • 19. Small adult with brown wings Full grown larva possess a brown head, a pair of long pencil of hairs projecting forwardly from the prothorax, yellowish tuft of hairs arising from the lateral side of the first two abdominal segment and long brownish hairs arising from 8th abdominal segment.
  • 21. Leafhopper, Empoasca flavescens, Cicadellidae, Hemiptera 10 Dr. U. Pirithiraj, P.hD. (Entomology) Throughout the tropics, subtropics and temperate areas Nymphs and adult suck phloem sap from leaves
  • 22. Whitefly, Trialeurodes ricini, T. rara, Aleyrodidae, Hemiptera 11 Dr. U. Pirithiraj, P.hD. (Entomology) Africa, the Middle East and Asia Symptoms: Water soaked spots on the leaves
  • 23. Thrips, Retithrips syriacus, Thripidae, Thysanoptera 12 Dr. U. Pirithiraj, P.hD. (Entomology) Nymphs carries fecal matters Damages the leaves Widespread in Africa and India
  • 24. Gall fly, Asphondylia ricini, Cecidomyiidae, Diptera 13 Dr. U. Pirithiraj, P.hD. (Entomology) Damage is caused by maggots As a result of feeding by them, the buds develop into galls and produce no fruits and seeds