Chrysolina quadrigemina (Suffr.)

Plant species attacked: St. John's wort
Biocontrol Agent Type: Foliar feeding beetle
Country of Origin: The populations released in BC orginated in Mediterranean France, and arrived here via Australia and California
First Released in BC: 1952
Click on image to view larger photo: C. hyperici & C. quadrigemina beetles Chrysolina larvae
 
Positive monitoring and/or dispersal locations in BC on St. John's wort:
(click image to view larger map)
Established Chrysolina quadrigemina on St. John's wort locations
 
View the in-depth Chrysolina quadrigemina information page here