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PESTS OF MAIZE :: Minor Pests :: Ash Weevil


9. Ash weevil: Myllocerus sp., (Curculionidae: Coleoptera)

Damage symptoms: The larva feeds on the secondary roots and adults on leaves.

Bionomics:
Adult is a grey coloured weevil.  A female weevil lays 98-350 eggs and they hatch in 3-12 days.  Larvae and pupae are in soil.  There are four larval instars of 23-40 days. Pupal period lasts 3-9 days.  Life cycle is completed in 29-58 days.


Management:
Spray endosulfan 35 EC 0.07%.