Spotted Wing Drosophila in Ontario

Photo showing SWD flies on raspberry fruit Photo showing male and female SWD fliesPhoto showing SWD vinegar trap


Spotted wing drosophila (SWD) is an invasive vinegar fly that has the potential to cause extensive damage to many fruit crops. Surveys coordinated by OMAFRA indicate SWD has spread to most fruit producing regions in Ontario.

SWD has become a chronic pest in berry and tender fruit crops in Ontario. Early detection and management are required to limit economic damage.

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Toll Free: 1-877-424-1300
Author: OMAFRA Staff
Creation Date: 8 June 2011
Last Reviewed: 24 July 2015