JASMINE :: MAJOR :: LEAF WEBWORM

3. Leaf webworm: Nausinoe geometralis (Pyraustidae: Lepidoptera)
Distribution and status: West Africa, India, Pakistan, Sri Lanka, Myanmar, Java, Formosa, china and Australia
Host range: Jasmine 
Damage symptoms :  Caterpillars attacks leaves of the plant mostly in the lower bushy and shaded portions. The leaves are webbed in an open and loose manner. The silk threads are seen as a cobweb on the surface of the leaves. Larvae skeletonize the leaves by eating away the parenchyma.
Bionomics :  Adult is a medium sized moth, having light brownish wings with white spots. Caterpillar is green with dark warts. Female lays 15-30 greenish yellow eggs on the leaf lamina; egg period 3-4 days. Larva pupate within the web; larval, pupal period are 12-15 days and 6-7 days respectively. Life cycle is completed in 22-24 days.

Management :

Spray dimethoate 30 EC 500 ml in 500 – 750 L of water/ha.