Genus species: Drosophila suzukii
The spotted wing Drosophila (SWD) is a vinegar or fruit fly of East Asian origin. It made its way into New York by 2011. Today, it has spread throughout most of the continental US. It can directly infest the fruit of many plants, but is most attracted to raspberries, blackberries, blueberries, and other late-season, soft-flesh fruits — cultivated and wild.
SWD deserves notice because, unlike her relatives, which lay eggs on over-ripe or rotting fruit, she can lay eggs inside fresh fruit, often before harvest. After only a few days, the fruit skin becomes dimpled or wrinkled, forming craters in the fruit. Without control measures, late season raspberries, blackberries and blueberries can suffer upwards of 80% crop loss.
Cornell University is coordinating SWD monitoring in NY. A map of current findings is found on the Distribution maps page and the SWD blog reports where it is being caught.
Crops of concern and wild hosts
Economic and environmental impact
SWD Resources:
- Getting Ready for Spotted Wing Drosophila: Understanding Risks for Small Fruit Crops and Current Management Options – webcast with Dr. Greg Loeb, Cornell University
- Spotted Wing Drosophila – Michigan State University
- Spotted Wing Drosophila – Oregon State University
- Spotted Wing Drosophila Working Group, NE IPM
- SWD Resource Database from the Northeastern IPM Center
- PA IPM, Spotted Wing Drosophila, Individual sections in PDF format:
- This “Ninja” Fruit Fly Cuts into Perfect Fruits – Spotted Wing Drosophila (2012 Fruit Quarterly v. 20-3)
- Spotted Wing Drosophila – General information, NC Small Fruit & Specialty Crop IPM
- Spotted Wing Drosophila (SWD), New Hampshire Department of Agriculture, Markets & Food
- Finger Lakes SWD monitoring videos – See — and learn how to ID — what the Loeb Lab is finding in their SWD traps. More info.
- Spotted Wing Drosophila – Info from the New York State IPM Program.
- SWD ID Video – You-tube video from Oregon State University on how to identify SWD.
- SWD Management – NY product tables for berry crops – including blueberries, raspberries and blackberries, and strawberries. NY product tables for stone fruit and grapes.
- Special SWD issue of New York Berry News [2013-07-29]
- Evaluation of Insect Exclusion and Mass Trapping as Cultural Controls of Spotted Wing Drosophila in Organic Blueberry Production – New York Fruit Quarterly, Spring 2014.
- How do I manage Spotted Wing Drosophila (SWD) in my garden?
Spotted Wing Drosophila Blog:
Latest posts:
- First find in Chemung County
Three SWD were caught in two traps set in and on the edge of a blueberry planting in Chemung County; 2 males and 1 female. These traps are being monitored by Shona Ort, Chemung County Cornell Cooperative Extension. Blueberries are ripe at this location and an insecticide program will be put into place this week. [] - Sustained catch across NY
SWD has now been caught two weeks in a row in Columbia, Livingston, Onondaga, Orleans, Saratoga, Washington, Wayne, and Wyoming Counties. Its time to pay attention to SWD and protect ripe and ripening fruit crops from infestation. SWD management SWD monitoring Crops of concern SWD identification NY distribution map Details about each Countys sustained catch: [] - Tart cherry SWD update
We have caught SWD at all but one of the seven tart cherry sites we are monitoring in Western NY, Wayne and Ontario Counties. Counts are still low and it is likely that the hot and dry weather, as well as insecticide protection, has held things in check. Weather has turned cooler and rains have [] - Tonight! — SWD Field Meeting, Hudson Valley
Starting at 5:00 PM today, Thursday, July 19, 2018, a field meeting on Exclusion Netting SWD Monitoring will be held. The meeting runs from 5:00pm to 7:00pm at the Poughkeepsie Farm Project. Attend the meeting to see and learn about an SWD exclusion netting trial in raspberries! Peter Jentsch, entomologist with the Hudson Valley Research Lab, will [] - First find in Livingston County
One female SWD was caught in a trap set in a small blueberry patch in Livingston County during the week ending July 12, 2018. These traps are being monitored by Dave Thorp, Livingston County CCE, and Ryan Parker, NYS IPM, sorted through the catch to identify the SWD. A recap: SWD monitoring, fruit.cornell.edu/spottedwing/monitoring/ – describes what you [] - First catch in Wayne and Onondaga Counties
SWD were caught in a raspberry planting in Wayne County and in two blueberry plantings, one each in Wayne and Onondaga Counties during the week ending July 10, 2018. Fruit is ripe and harvests are underway at these farms. These traps are being monitored by Ryan Parker and Nicole Mattoon, working with Juliet Carroll, NYS [] - Sustained catch in Niagara County
11 SWD were caught during the week ending July 10, 2018 in two traps set in a raspberry planting in Niagara County, indicating sustained catch. The trap set within the crop caught 2 females and 6 males and 3 females and zero males were found in the trap set in the nearby hedgerow. This jump in []
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