Biological agent type
Seed beetle.
Plant species attacked
Scotch broom (Cytisus scoparius)
French broom (Genista monspessulana)
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Images by Eric Coombs, Oregon Department of Agriculture.
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Site of attack
Seeds
Mode of attack
The larvae feed on the seeds in the seedpods. Adults feed on pollen.
Destructive stage
Larva-internal
Collection and release information
Available for collection in western Oregon at several sites in the Willamette Valley..
History in Oregon
The seed beetle Bruchidius villosus was first released in Oregon in 1998, in Marion and Lane Counties. The beetle is an accidental introduction to the East Coast, but went through the TAG testing protocol for safety in order to be introduced into OR. The insect has also been released as a biocontrol agent in New Zealand. The beetle has been introduced at numerous sites since 2000. Populations are slowly increasing. Limited redistribution began in 2004. In 2001, it was found to attack French broom in the Eugene area.
Release status in State
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