It was first released as a knapweed biocontrol in the 1980s in Oregon , and it is currently established in the Pacific Northwest . It was first released as Knopweed Biocontrol in Oregon in the 1980s , and is currently established in the Pacific Northwest .
Ia pertama kali dikeluarkan sebagai biocontrol knapweed pada tahun 1980-an di Oregon, dan kini ditubuhkan di Pasifik Barat Laut. Ia pertama kali dikeluarkan sebagai Knopweed Biocontrol di Oregon pada tahun 1980-an, dan kini ditubuhkan di Pasifik Barat Laut.