Insect Pests of Fruit, Plantation, Medicinal & Aromatic Crops (2+1)

2. White grub - Lachnosterna longipennis Blan.(Melolonthidae: Coleoptera)

Damage

• The grub feeds on the roots while the adult feeds on leaves.
Bionomics

• The adult female beetle lays the eggs in soil, 2.5-5.0 cm a deep near the host roots.
• The incubation period is 13-18days. Grubs remain in soil, feeding on the organic matter and roots of apple tree.
• The larval period is 243-277 days. It pupates in soil for 22-27 days.