Plum Curculio

Conotrachelus nenuphar
Description

This weevil is dark brown and is covered with fine tan or white hairs. It has a dark band across the middle of the back and the insect may appear to be shiny or spotted.

Damage

This pest is commonly found on all pome fruits and can cause serious damage. Their first appearance coinsides with blooming. Both larvae and adults feed on blossoms, leaves and fruit.

Stage Timing Where to Look
Adults Spring when temperatures exceed 15.5 C (60 F)

Late July to hibernation (temperatures below 15.5 C (60 F)

 In orchard adjacent to hedgerow. Feeding wounds are frequently the first sign of adult presence.

Same as above.
Eggs Petal fall and 30 days thereafter On developing fruit within crescent shaped oviposition wounds.
Larvae Early June through mid-July Within injured, dropped fruit
Pupae Mid-July through mid-August In soil within 25 mm (1 in) of surface.