University of Maryland Extension

Spotted Wing Drosophila

The Spotted Wing Drosophila (SWD) - Part 2: Management

Timely Viticulture: Pre Harvest
The Spotted Wing Drosophila (SWD) is a small vinegar fly with the potential to damage many fruit crops, particularly thin-skinned fruit. SWD was first detected in the western United States in 2008 and has already become a major pest of many fruit and berry crops in Maryland, with potential to cause...

The Spotted Wing Drosophila (SWD) - Part 1: History, Background, and Damage

Timely Viticulture: Pre Harvest
History The Spotted Wing Drosophila (SWD) is a small vinegar fly with the potential to damage many fruit crops, especially thin-skinned fruit. SWD, or Drosophila suzukii, is native to eastern Asia. Most species of vinegar flies attack overripe or damaged fruit. However, SWD is unique as the female...

Spotted Wing Drosophila in Cherries in Southern Maryland

June 2013 Growers and an alert county agent, Ben Beale, have found what most likely will be an infestation of spotted wing drosophila (SWD) in cherries in southern Maryland (St. Mary’s County). I say "most likely" because I have the cherries and the maggots but it is very difficult to identify SWD...
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