Rice hispa : Dicladispa armigera (Olivier) (Coleoptera ; Chrysomelidae) Kannada name : Mullu chippina dumbhi Period of occurrence : Seedling to Maturity stage
Extent of yield loss:
20% yield loss
This pest breeds actively from May to October and hibernates during winter probably in the adult stage.
Eggs: White. It is small and oval. In May, the beetles start laying eggs on nursery plants on the lower surface of leaf.
Grub: Very small, apodous and creamy white. Both grub and pupae are found in the leaf tissue.
Pupa: Brown and round.
Adult: Blue-black and very shiny. Its wings have many spines.
- Grubs make tunneling through leaf tissue causing irregular translucent white patches that -are parallel to the leaf veins.
- Damaged areas have white streaks that are parallel to the midrib
Hispa afftected field
Submitted by naipictuasdharwad on Wed, 15/07/2009 - 10:16