Skip Maine state header navigation

Agencies | Online Services | Help

Skip First Level Navigation | Skip All Navigation

Ask the Expert Button

provide feedback

Home > Bugs > Bugs of Trees and Shrubs > Plum Curculio

Plum Curculio—Conotrachelus nenuphar

The plum curculio is a very destructive pest of plums, apples, peaches, pears, cherries and other wild and cultivated fruits. Injury occurs in three ways: from spring and early fall feeding by adult weevils; by egg-laying in the fruit by females; and from the feeding of larvae within the fruit. They overwinter as adults in the soil within the orchard or in nearby woodlands.

 

Larvae develop inside fruit. Fully grown larvae (grub) is about 3/8 long, C-shaped, yellowish-white, legless, with a brown head. The adult weevil. is dark brown with whitish-gray patches and four humps on the wing covers. It is about 1/4 inch long with a long snout. The egg-laying site is a small cavity, next to which is made a crescent-shaped cut. Late season feeding by adults causes scarring.

Click on images to view full-size

 

Identification and Control Information (each will open in a new window)

 

 

[Photos, left to right: AgriLife Research & Extension Texas A&M; Utah State University Cooperative Extension; University of Kentucky Entomology]

 
It is the policy of the State of Maine to minimize reliance on pesticides. The Maine Department of Agriculture, Conservation and Forestry and the Maine IPM Council encourage everyone to practice integrated pest management and to use pesticides only as a last resort. The mention of pesticides in the fact sheets linked to these pages does not imply an endorsement of any product. Be sure that any product used is currently registered and follow all label directions.