Spotted-wing drosophila
Drosophila suzukii
55 host plants
Last updated
Spotted-wing drosophila (Drosophila suzukii) damages ripe-to-overripe berry and stone fruit by depositing eggs directly beneath the skin. Larvae tunnel through fruit tissue creating brown, sunken areas; infested fruit develops a fermented or sour smell as bacteria from egg-laying females contaminate the fruit. Berries like raspberry, blackberry, and blueberry are particularly susceptible.
Monitor ripe fruit starting in June for collapse signs. Harvest fruit promptly when ripe rather than leaving it overripe. Exclude flies with fine-mesh netting. Remove fallen fruit promptly. Spinosad and pyrethrin-based products provide good control with low residue concerns.