Symptoms of damage:

• Young larva feeds gregariously on leaves
• Later webs together the leaves feed within

Identification of pest:

• Egg: laid in groups under surface of leaves.
• Larva: green coloured
• Pupa: pupation takes place within the webbed up leaves
• Adult: Forewings having distinct wavy lines and prominent wavy spots. Hind wings are semi hyaline colour

Management:

• Remove and destroy the webbed leaves with caterpillars within
• Set up light traps@1/ha
• Encourage the activity of parasitoid: Cotesia crocidolomiae