Oregon -Northwest grapegrowers are preparing to fight new invasive pests threatening their vineyards. One of the least understood of these invaders is spotted-wing drosophila (D. suzukii), a species native to Asia that was initially reported in California in 2008. Grapegrowers in Oregon’s Upper Willamette Valley discovered the insect in Pinot Noir grapes last year, and the fly was also detected in a non-commercial winegrape vineyard south of Abbotsford, British Columbia.