written by: Maria Cramer and Huiyu Sheng ​

Spotted wing drosophila (SWD) is a pest that causes backyard berry growers and commercial farmers alike a lot of grief. Native to Eastern Asia, this fruit fly (closely related to the famous Drosophila melanogaster) first appeared in the mainland U.S. in 2008. Like other fruit flies, SWD lays eggs in fruit, but unlike others, it has a sharp ovipositor that allows it to cut through fruit skin and lay eggs inside (Figure 1). Because of this, SWD larvae aren’t restricted to rotting or damaged fruit– they can infest otherwise perfect produce. Their favorite fruits include raspberries, blackberries, grapes, and cherries.

Besides the ick-factor, the wounds from cutting into fruit can introduce microorganisms that cause the fruit to rot. To make things worse, because they’re inside fruit, the larvae are protected from insecticide sprays (Figure 2). This means farmers have to instead target the adult flies, which requires frequent insecticide applications. Spraying insecticides over and over has many downsides; it’s expensive for farmers, it could hurt other insects, and it could even put pressure on SWD to develop resistance to the chemicals themselves, making them less effective.

​Dr. Torsten Schöneberg would love to see an end to this “spray and pray” approach for managing SWD. Currently a researcher at Agroscope in Switzerland, Dr. Schöneberg recently completed a postdoc in the Hamby Lab at the University of Maryland. He returned to the Entomology Department’s weekly seminar series to give an update on the research he did during this time.

The Entomological Society of America's Eastern Branch Early Career Award recognizes early professionals who have made outstanding contributions to entomology, shown commitment to extension or outreach, and excelled in entomological education.  Congratulations to Dr. Karin Burghardt, the recipient of this year's award!

Dr. Karin Burghardt is an Assistant Professor and Extension Specialist in the Department of Entomology at the University of Maryland College Park. Trained as a community ecologist, she specializes in understanding plant-insect interactions in human-modified landscapes ranging from suburban yards to abandoned agricultural fields to managed forests. Her research and extension program helps determine best practices for how humans can share space with a variety of flora and fauna.
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In April, Karin will be honored at the Eastern Branch Meeting in Philadelphia and entered for consideration for the Society–level award given at ESA's Annual Meeting. Congratulations again on the well-deserved recognition Dr. Burghardt!

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