Spotted Wing Drosophila is a vinegar fly originally from southeast Asia that was recently introduced to the United States. It is a major pest globaly and attacks a large number of hosts: peaches, cherries, berries, grapes and many more.
The female uses a saw-like ovipositor to deposit eggs directly into developing fruit. The eggs hatch inside and the developing larva eat the insides of the fruit, which quickly shrivels up and is unmarketable.
Several insecticides are available for controlling Spotted Wing Drosophila. Once presence is confirmed, insecticides should be applied every 7 days from the time the fruit begins to change color until harvest. Always read and follow all label instructions.