Spotted Wing Drosophila (SWD)

Information and resources about monitoring, identification, and management of spotted wing drosophila (SWD), an invasive fruit fly.

Spotted Wing Drosophila

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

Aug 2018 | Online resource

Monitoring Vineyards for Spotted-wing Drosophila

Step-by-step instructions on how to monitor for SWD and interpret results. Presence of the pest is the first step to determining future management needs and strategies.

Patricia A. Skinkis | Jul 2017 | Article Peer reviewed (Gray level)

A new pest attacking healthy ripening fruit in Oregon: Spotted Wing Drosophila, Drosophila Suzukii (Matsumura)

Pest of Concern Infestations of the Spotted Wing Drosophila fly (Diptera: Drosophilidae; SWD), an exotic pest, were found in Oregon fruits. There are 3000 species of Drosophila, commonly known as vinegar flies, but only two have...

Vaughn Walton, Amy J. Dreves, Glenn Fisher | Mar 2010 | Article

How to make a trap to catch the Spotted Wing Drosophila Fly

Amy Dreves, an entomologist with the Oregon State University Extension Service, demonstrates how to make traps out of plastic cups to catch the spotted wing drosophila fly. Filmed and edited by Tiffany Woods.

Tiffany Woods, Amy J. Dreves | Mar 2011 | Video

How to place traps to catch the spotted wing drosophila fly

This video demonstrates how to hang traps and place them on the ground to catch the spotted wing drosophila fly.

Tiffany Woods, Amy J. Dreves | Mar 2011 | Video

How to set multiple traps to catch the Spotted Drosophila Fly

Learn how to place a series of closely spaced vinegar traps along the perimeter of your yard early in the season to catch spotted wing drosophila flies.

Tiffany Woods, Amy J. Dreves | Mar 2011 | Video

How to check traps to catch the Spotted Wing Drosophila Fly

See how to check vinegar traps for spotted wing drosophila flies.

Tiffany Woods, Amy J. Dreves | Mar 2011 | Video

How to clean up fallen fruit to prevent the Spotted Wing Drosophila fly

See how to clean up fallen fruit so spotted wing drosophila flies don't have a place to lay eggs and so any possible larvae already in the fruit will die.

Tiffany Woods, Amy J. Dreves | Mar 2011 | Video

How to use netting to keep the Spotted Wing Drosophila Fly off plants

Amy Dreves, an entomologist with the Oregon State University Extension Service, demonstrates how to drape plants with netting to keep out spotted wing drosophila flies. Filmed and edited by Tiffany Woods.

Amy J. Dreves, Tiffany Woods | Mar 2011 | Video

Noncrop Host Plants of Spotted Wing Drosophila in North America

Landscapes surrounding fruit production fields often include hedgerows, adjacent field margins, and woody or riparian areas with ornamentals, unmanaged shrubs, vines, or other plants that also produce fruits. Noncrop habitats can meet ...

Amy J. Dreves, Linda Brewer | Dec 2019 | OSU Extension Catalog Peer reviewed (Orange level)

Spotted Wing Drosophila: A Quick, 7-Step Guide to Detecting SWD Larvae in Fruit

This brief guide illustrates how to test fruit for the presence of larvae from the Spotted Wing Drosophila.

Amy J. Dreves | Oct 2014 | OSU Extension Catalog Peer reviewed (Orange level)

A Detailed Guide for Testing Fruit for the Presence of Spotted Wing Drosophila (SWD) Larvae

This detailed guide illustrates how to test fruit for the presence of the Spotted Wing Drosophila larvae by crushing the fruit, immersing it into a salt or sugar solution, and examining the fruit debris for larvae and pupae.

Amy J. Dreves | Oct 2014 | OSU Extension Catalog Peer reviewed (Orange level)

A New Pest Attacking Healthy Ripening Fruit in Oregon: Spotted Wing Drosophila

Publication provides an overview of spotted wing drosophila identification, biology, damage, monitoring, and control.

Amy J. Dreves, Vaughn Walton | Oct 2009 | OSU Extension Catalog Peer reviewed (Orange level)

Recognize Fruit Damage from Spotted Wing Drosophila

This publication shows damage caused by SWD on blueberries (Duke), raspberries (Malahat), strawberries (Seascape), cherries (Bing, Montmorency, and Rainier), and grapes (Pinot Noir, Chardonnay).

Vaughn Walton, Amy J. Dreves | Dec 2010 | OSU Extension Catalog Peer reviewed (Orange level)

Researchers identify successful biological control for destructive fruit fly

A parasitic wasp has shown tremendous potential attacking and controlling spotted wing drosophila – an invasive, destructive fruit fly that costs Oregon growers close to a billion dollars a year.

Chris Branam | Dec 10, 2019 | News story

For more information, please visit OSU's Spotted Wing Drosophila site

December 2018

Vaughn Walton

Entomologist

Linda Brewer

Senior Faculty Research Assistant II, Department of Horticulture

Bernadine Strik

(Retired)

Dr. Patty Skinkis standing in OSU's research vineyard

Patricia A. Skinkis

Viticulture Extension Specialist

Peter Shearer

Research Entomologist

Oregon State University

Jana Lee

Research Entomologist

USDA-ARS-HCRL

Man-Yeon Choi

Research Entomologist

USDA-ARS-HCRL

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Monitoring Vineyards for Spotted-wing Drosophila

Step-by-step instructions on how to monitor for SWD and interpret results. Presence of the pest is the first step to determining future management needs and strategies.

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