SWD Update Week of 6/10- More captures across NY State

Spotted wing drosophila (SWD) first and sustained trap captures continue to be reported in many locations throughout NY state over the past three weeks.

First captures were reported

• The week of 5/27 in Albany, Dutchess and Suffolk Counties.
• The week of 6/3 in Clinton, Columbia, Schuyler, Washington, and Ontario Counties.
• The week of 6/10 in Delaware, Essex, Niagara, Tioga, Tompkins, Wayne

As mentioned our first update for 2024 summarizing SWD monitoring, first captures are somewhat earlier than has been reported in the past. This is especially true compared to last season (2023), in which first trap captures for many locations were recorded nearly two weeks later than average. This highlights the need for site and season specific monitoring efforts to initiate management programs at the appropriate time.

Under the correct conditions, populations of SWD can increase rapidly. This season, in most locations only low trap captures have been reported. But in a few locations, trap captures have already increase dramatically, particularly in places where first trap capture was reported earlier (at the end of May). The following graph shows at sites across NY State from the week of May 27 to June 10, showing increase in the overall number of insects captured per site.

Weekly trap captures by locations

Thank you to all of our collaborators for servicing SWD traps across the state!