Amaranthus insects A Lecture By Allah Dad Khan Provincial Coordinator IPM MINFAL Islamabad

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This document discusses three major insect pests that damage amaranthus crops: the amaranthus weevil (Hypolixus truncatulus), the leaf caterpillar (Hymenia recurvalis), and the leaf webber (Psara basalis). It provides details on the symptoms, identification, and management of each pest. The amaranthus weevil bores into and hollows out stems, while the leaf caterpillar webs and feeds on leaves causing them to dry up. The leaf webber also webs leaves with silken threads. Farmers are advised to uproot and destroy infested plants to control weevil populations.

Education

Amaranthus Insects
A
Lecture To ToT trainees ( FFS)
By
Mr. Allah Dad Khan
Provincial Coordinator IPM KPK
MINFAL Pakistan

• Crop: AmaranthusScientific
Name: Amaranthus hybridusFamily:
Amaranthaceae

Amaranthus weevil: Hypolixus truncatulus
Symptoms of damage:
• Irregular zig-zag tunnels in the pith region filled with excreta
• Gall like thickening and longitudinal splitting of stem
• Suppression of root and leaf production
• Cause
• Insect
• Comments
• Adult weevils feed on foliage; larvae hollow out stems; damage
promotes colonization of fungi and other pathogens
• Management
• Uproot and destroy infested plants to limit weevil population
•

Amaranthus weevil: Hypolixus truncatulus
Identification of pest:
• Egg: Smooth, oval, pale
yellow in colour, laid singly
in stem
• Grub: Stout, curved, legless
and white in colour
• Adult: Ash grey in colour
with brown elytra and has a
very long snout

Leaf caterpillar: Hymenia recurvalis
Symptoms of damage:
• Web the leaves with silken
threads and feed within
• Webbed leaves become
devoid of chlorophyll and
dry up
Drying and webbing

Leaf caterpillar: Hymenia recurvalis
Identification of pest:
• Larva: Greenish with white
lines and black crescents on
thorax below the lateral
lines
• Adult: Small, black
coloured, moth with slender
body.Wings dark brown in
colour with white wavy
markings
Adult

Leaf webber: Psara basalis
Symptoms of damage:
• Webbing of leaves with
silken threads

Leaf webber: Psara basalis
Identification of pest:
• Larva: Green in colour
• Adult: small moth with
yellowish white thorax and
abdomen, brownish red
forewing and dark brown
hind wing.
• Management:

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