Yellow Starthistle Information
Insect biological control agents for yellow starthistle, year of introduction and current distribution.
Species |
Common name |
Year of release |
Current distribution |
|---|---|---|---|
|
Urophora jaculata |
Seed-head fly |
1969 |
Never established |
|
Urophora sirunaseva |
Seed-head fly |
1984 |
Widespread in CA and OR, a few sites in WA and ID |
|
Bangasternus orientalis |
Seed-head weevil |
1985 |
Widespread in CA, OR, WA and ID |
|
Chaetorellia australis |
Peacock fly |
1988 |
Requires bachelor buttons (Centaurea cyanus) as intemediate host. Widespread in OR, WA and ID, a few sites in CA |
|
Eustenopus villosus |
Hairy weevil |
1990 |
Widespread in CA, OR and WA, a few sites in ID and UT |
|
Chaetorellia succinea |
False peacock fly |
1991 |
Widespread in CA and OR, spreading in WA, ID and NV |
|
Larinus curtus |
Flower weevil |
1992 |
Widespread in OR, a few sites in CA, WA and ID |
