Cyphocleonus achates (Fahr.)

Plant species attacked: Diffuse knapweed | Spotted knapweed
Biocontrol Agent Type: Root feeding beetle (weevil)
Country of Origin: The populations released in BC originated in Austria, Hungary and Romania
First Released in BC: 1987
Click on image to view larger photo: Cyphocleonus achates feeding damage to the root Cyphocleonus achates adult
 
Positive monitoring and/or dispersal locations in BC on Diffuse and Spotted knapweeds:
(click image to view larger map)
Established Cyphocleonus achates on Diffuse knapweed locations Established Cyphocleonus achates on Spotted knapweed locations
Download Field Guide: Operational Field Guide - Cyphocleonus achates
 
View the in-depth Cyphocleonus achates information page here