The red pumpkin beetle is a destructive pest of cucurbitaceous vegetables like pumpkin, melon, and cucumber. It has a deep orange dorsal side and black ventral side, measuring 5-8mm long. Both the adult beetle and grub damage plants by feeding voraciously on leaves, flowers, and fruits. The adult overwinters in the soil and emerges in March, completing 5 generations by October. Control methods include trap crops, collecting and destroying pests, and spraying soil with strong insecticides. The cabbage butterfly is a pest of cabbage and other cruciferous plants. The white adult butterfly lays clusters of pale yellow eggs on host plants. The hatched caterpillars feed g

1. VEGETABLE PESTS

2. RED PUMPKIN BEETLE
By
Hira Nusrat

3. SYSTEMATIC POSITION:
•Phylum Arthropoda
Class Insecta
Order Coleoptera
Family Chrysomelidae
Genus Raphidopalpa
Species foveicollis

4. DISTRIBUTION:
•Widely distributed in different parts
of the world, specially in Asia,
Australia and South Europe.

5. MARKS OF IDENTIFICATION:
•Dorsal part of the body of adult is deep orange,
while the ventral side is black.
•Body appears to be oblong, measuring 5-8mm
in length and 3.5-3.75mm in width.

6. FOOD PLANTS & NATURE OF DAMAGE:
•Most destructive pest of all cucurbitaceous
vegetables.
•Infests pumpkin, tinda, melon, tori, cucumber
etc.
•Have special liking for pumpkin.
•Damage is caused mainly by adult insect that
feeds voraciously on leaves, flower and fruits.

7. •It make holes in the plant tissues,
causing death or retardation of growth.
•The grubs of this pest remain in the soil
and feeds on roots and stem of the
plant.

8. LIFE CYCLE:
•The adults hibernate in November inside soil or
among dry weeds and appears again in March.
• A complete life cycle takes about 25-37 days.
• 5 generations are completed during March to
October.

9. 1. EGG LAYING:
•Female lays eggs singly or in batches of 8-
in the moist soil at the base of the host
plant.
•As many as 300 eggs are laid by a single
females.
•Eggs are elongated and brown in color.

10. 2. LARVATION:
•Egg hatches into larva in 6-15 days (5-8 days in
opt cond. )
•The whitish grub with brown head bores and
upon plant roots, fallen leaves and fruits laying on
the surface of the soil.
•Grub molts 4 times during13-25 days
of their larval period. Molting occur
inside the soil.

11. 2. PUPATION:
•A fully molt grub moves deep into the soil
(1.3-25.4 cm s deep) and pupate within a
waterproof, thick walled oval cocoon.
•Pupation period lasts for 7-17 days, after
which it metamorphoses into adult beetle.

12. 3. ADULT FORMATION:
•The adult comes out of the soil to feed
upon the host plants and to breed.
•After about 7 days of emergence adult
beetle start laying eggs.

14. PREVENTION AND CONTROL:
1. Trap crops.
2. Mechanical collection and destruction of pest.
3. Repellants.
4. Spraying the soil around the roots with strong
insecticides so that the grubs and pupa don’t
hatch.
5. Lindane (0.1%) , methyl parathione (0.02%) or
malathione (0.05%) , carbaryl or pyretherum

15. Thank
you…

16. THE CABBAGE BUTTERFLY
By
Hira Nusrat

17. SYSTEMATIC POSITION:
•Phylum Arthropoda
Class Insecta
Order Lepidoptera
Family Pieridae
Genus Pieris
Species brassicae

18. DISTRIBUTION:
•Cosmopolitan in distribution
•During winter, the adult worms migrates to the
plains and passes two generations there.
•Return back to the hill when winter is over.

19. FOOD PLANTS:
•Pest of cabbage, occasionally causing
serious damage to the crops.
•Also feeds upon radish, turnip, cauliflower,
tori and other crucifers.

20. NATURE OF DAMAGE:
•Damage is caused by caterpillars.
•Newly hatched caterpillars lacerate the
leave surface of the host plant and
skeletomise them.
•The grownup caterpillars voraciously feed
on the leaves of the host plant and
sometimes eating away the whole plant.

21. MARKS OF
IDENTIFICATION:
• Adult butterflies are snow white,
males are smaller than females.
• Adult female measures about
6.5cm across the spread of the
wings.
• The adult males and females also
differ by the difference between
their wing patterns.

22. LIFE CYCLE:
1. EGG LAYING:
• Eggs are conical in shape and pale yellow
in color.
• They are laid in Batches of 50-80.
• Total no. of eggs laid by a female is 160-
170.
• The incubation period varies in different
seasons.
• The shortest incubation period is
recorded in May (3-4 day) and longest in
January (17-18 days).

23. 2. LARVATION:
• The caterpillars are small and
green in color.
• They are gregarious in nature in
the beginning but later they
disperse out.
• They voraciously feeds upon
leaves of the host plant and
molts 5 times to attain a fully-
grown size.

24. •The fully-grown caterpillar
measures 5cm in length and
becomes greenish yellow in
color.
•The larval period lasts for 15-40
days.
•The body of larva remains
covered with short hairs.

25. 3. PUPATION:
• The matured caterpillar
undergoes pupation.
• Occurs on the stem of the near
by trees or any other shelter
place, rarely on the host plant.
• The period ranges in different
seasons from 7-29 days.

26. 4. ADULT FORMATION:
•After 7-29 days of pupation,
adult emerges out.
•Generally 4 generations are
completed in an year.

28. PREVENTION & CONTROL:
• Collection and destruction of caterpillars from the field.
• Biological control, including introduction of Apanteles
glomerates which parasitizes the larva of cabbage
butterfly.
• Spraying the crops with malathion (0.05%) or diazinon
(0.02%) three weeks before harvesting can reduce
infestation of this fest.

29. Thank you...