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2015 SWD season underway

The 2015 trapping season is underway and first detection of SWD has occurred in Ontario, Canada and New York State. This is certainly earlier than in 2014! It is also the earliest trap catch reported for New York since this invasive arrived here in 2012. Typically, a single trap (out of four) is catching a […]

First finds outside NY

Reports have come in from Southwest Michigan by Rufus Isaacs, Michigan State University, and Middlesex County in Connecticut by Rich Cowles, CT Agricultural Experiment Station of first catch of SWD. As of today, no one in the NY monitoring network has reported trap catch of SWD. Although the catch in Michigan was of several adults, […]

SWD on the National Scene

Typically, SWD trap catch continues to increase – hundreds/week – peaking in late fall. In Oregon and Washington, SWD counts in traps have about doubled each week over the last four weeks; the pressure is the highest experienced since SWD’s introduction to that region in 2009. In North Carolina, where SWD arrived in 2010, high […]


As of July 15, spotted wing drosophila females have been found in summer red raspberry plantations in several locations in PA and a few females were found in traps in blueberries in Adams County. Read the SWD Update from Kathleen Demchak, Senior Extension Associate, and David Biddinger, Tree Fruit Research Entomologist, Pennsylvania State University.

RI first report

The first SWD of the season was confirmed on June 19, 2013 by Heather Faubert, University of Rhode Island. A single male was caught in an apple cider vinegar/yeast insert dual trap set up in a cherry tree in Newport County, Rhode Island. Cherries were collected to check for oviposition. (Accumulated GDD 508, day langth 15:08)

CT first report

On June 17, 2013, a single female SWD was found in the SWD trap network maintained by Mary Concklin, Extension Educator – Fruit Production & IPM, University of Connecticut. The trap was in a cherry orchard in Hartford County, CT.  Cherries had no evidence of SWD larvae.

MA first report – one SWD found

One female spotted wing drosophila (SWD) was caught on June 10, 2013 in Massachusetts, Hampshire County, as reported by Sonia Schloemann, UMass Extension Fruit Specialist, UMass Center for Agriculture. Read more in Massachusetts Berry Notes. A female SWD has the capacity to lay over 350 eggs during her 20- to 30-day life span. The trap was […]

NJ and MI report their first SWD of 2013

Reports have come in from Michigan State University and Rutgers University of positive SWD findings in traps set adjacent to blueberry plantings in Michigan and New Jersey, respectively.