Weeds Management > Insects

Spotted Knapweed Insects

Common Name: Sulphur knapweed moth, yellow-winged knapweed root moth
Species: Agapeta zoegana
Status: Widely established
Year Released: 1984
Larvae mine the roots.

Common Name: Knapweed root weevil
Species: Cyphocleonus achates
Status: Moderately established
Year Released: 1988
Larvae mine the roots.

Common Name: Lesser knapweed flower weevil
Species: Larinus minutus
Status: Widely established
Year Released: 1991
Larvae feed on the seed heads and adults feed on rosette leaves and flowers.

Common Name: Blunt knapweed flower weevil
Species: Larinus obtusus
Status: Widely established
Year Released: 1993
Larvae feed on the seed heads.

Common Name: Spotted knapweed seed head moth
Species: Metzneria paucipuntella
Status: Widely established
Year Released: 1980
Larvae feed on the seed heads.

Common Name: Banded gall fly
Species: Urophora affinis
Status: Widely established
Year Released: 1973
Larvae feed on the developing seed heads.

Common Name: UV knapweed seed head fly
Species: Urophora quadrifasciata
Status: Widely established
Year Released: 1981
Larvae feed and develop in the maturing seed heads.