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Spotted Wing Drosophila. Rysheen Hagans. Natural History. Invasive vinegar fly. 2 – 3 mm in size, with a pale body and red eyes. First observed in the U.S. in California in 2008. Also found in New England in 2011. Lay their eggs in ripe fruit and berries. Native Location.
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Spotted Wing Drosophila RysheenHagans
Natural History Invasive vinegar fly. 2 – 3 mm in size, with a pale body and red eyes. First observed in the U.S. in California in 2008. Also found in New England in 2011. Lay their eggs in ripe fruit and berries.
Native Location The SWD are native to Southeast Asia. First described in 1931 by Matsumara. Observed in Japan in 1916 by T. Kanzawa. Widely observed throughout parts of Japan, Korea, and China.
Introduction of Species Recently introduced species of fruit fly in the U.S. Found on the west coast in 2008, but has colonize many fruit producing regions. Believed to come here by infested fruit shipped from different countries. Also found in New England shortly after Hurricane Irene in 2011.
Impact On Ecosystem Hatch eggs in fruit, leaving barely visible scar on surface. Larvae hatch and feed on fruit from the inside leaving fruit deformed. Big concern on the west coast of the U.S. West coast is where a large portion of berries are produced. In the northeast, raspberries and blackberries have been affected most by the SWD.
Spread /Control Fruit growers are encouraged to inspect their crops. Bait traps or lures are also encouraged. To control the SWD, remove all ripe and cull fruits and harvesting. Infested fruits are disposed of. Control agents such as parasitoids have an effect on the species.