Spotted Wing Drosophila

Spotted wing Drosophila (SWD) has quickly become the number one insect pest of Minnesota grown raspberries. Because of its ability to rapidly reproduce and the protection the larva receives by developing inside the fruit, SWD is difficult to manage. Good cultural practices such as timely harvests and gleaning fields for overripe fruit are key to minimizing SWD egg lay and development.

Image: Multiple SWD adults on overripe black raspberries, illustrating the potential for creating a continuous stream of new generations (S. J. Wold-Burkness, UMN).

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The Minn. Extension IPM Program is a collaboration of University of Minnesota Extension & the College of Food, Agriculture, and Natural Resource Sciences (CFANS).