Managers Volunteers Partners

Spotted Wing Drosophila

Common Name: Spotted wing drosophila
Scientific Name: Drosophila suzukii
Origin: Southeast Asia


Spotted wing drosophila (SWD), Drosophila suzukii, is an insect pest of economically valuable, small fruit and tree fruit crops. Known in Oregon and the Pacific Northwest since about 2009, this species now appears to be established in many fruit growing regions around the country.


SWD is found in moderate climates between 40° and 68° Fahrenheit.


SWD impacts many fruit crops including raspberries, blackberries, blueberries, strawberries, sweet cherries, peaches, grapes and tomatoes. SWD lays eggs inside fruit, unlike other species which lay eggs on top of fruit. The larva then eat the fruit from the inside, causing it to collapse. SWD infestations can lead to up to 80% crop loss.


Growers and researchers are working together to implement effective pest control strategies.

Regional Distribution


WNY PRISM Priority

Tier 4 – Local Control

Invasive Species Priorities – Tier Chart


SWD is spread through shipments of contaminated fruits and through natural dispersal.

Additional Resources

Spotted wing Drosophila

Drosophila suzukii distribution in NYS