Spotted Wing Drosophila

Spotted Wing Drosophila Alert — August 27, 2026

David Handley, Vegetable and Small Fruit Specialist; James Dill, Pest Management Specialist; Phil Fanning, Assistant Professor of Agricultural Entomology; Christina Howard, Maine New Farmers Project Manager Spotted wing drosophila fruit fly numbers in raspberries and highbush blueberries have risen at most of our sites over the past two weeks (see table below). Some, but not […]

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Spotted Wing Drosophila Alert — August 14, 2026

David Handley, Vegetable and Small Fruit Specialist; James Dill, Pest Management Specialist; Phil Fanning, Assistant Professor of Agricultural Entomology; Christina Howard, Maine New Farmers Project Manager Spotted wing drosophila fruit fly numbers continue to be at relatively low levels at most of our sites with vinegar/yeast traps in raspberries and highbush blueberries (see table below). […]

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Spotted Wing Drosophila Alert — August 7, 2026

David Handley, Vegetable and Small Fruit Specialist; James Dill, Pest Management Specialist; Phil Fanning, Assistant Professor of Agricultural Entomology; Christina Howard, Maine New Farmers Project Manager Spotted wing drosophila fruit fly numbers remained relatively stable this week and at low levels where we are monitoring with vinegar/yeast traps in raspberries and highbush blueberries (see table […]

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Spotted Wing Drosophila Alert — July 31, 2026

David Handley, Vegetable and Small Fruit Specialist; James Dill, Pest Management Specialist; Phil Fanning, Assistant Professor of Agricultural Entomology; Christina Howard, Maine New Farmers Project Manager Spotted wing drosophila fruit fly numbers remain relatively low and stable this week at the sites we are monitoring with vinegar/yeast traps in raspberries and highbush blueberries (see table […]

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Spotted Wing Drosophila Alert — July 24, 2026

David Handley, Vegetable and Small Fruit Specialist; James Dill, Pest Management Specialist; Phil Fanning, Assistant Professor of Agricultural Entomology; Christina Howard, Maine New Farmers Project Manager Spotted wing drosophila fruit fly numbers were relatively stable or lower this week at the sights we are monitoring with vinegar/yeast traps in raspberries and highbush blueberries (see table […]

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Spotted Wing Drosophila Alert — July 15, 2026

David Handley, Vegetable and Small Fruit Specialist; James Dill, Pest Management Specialist; Phil Fanning, Assistant Professor of Agricultural Entomology; Christina Howard, Maine New Farmers Project Manager Spotted wing drosophila fruit fly numbers have increased significantly at some of the sights we are monitoring with vinegar/yeast traps in raspberries and highbush blueberries this week (see table […]

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Spotted Wing Drosophila Alert — July 7, 2026

David Handley, Vegetable and Small Fruit Specialist; James Dill, Pest Management Specialist; Phil Fanning, Assistant Professor of Agricultural Entomology; Christina Howard, Maine New Farmers Project Manager Spotted wing drosophila fruit flies are now being caught in traps we have set up in strawberry and raspberry fields in southern Maine (see table below). Drosophila larvae have […]

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Spotted Wing Drosophila Alert — October 3, 2025

Last Issue of the 2025 Season David Handley, Vegetable and Small Fruit Specialist; James Dill, Pest Management Specialist; Phil Fanning, Assistant Professor of Agricultural Entomology; Christina Howard, Maine New Farmers Project Manager We have retired all of the trapping locations for our spotted wing drosophila monitoring program over the past two weeks. The numbers reported […]

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Spotted Wing Drosophila Alert — September 12, 2025

David Handley, Vegetable and Small Fruit Specialist; James Dill, Pest Management Specialist; Phil Fanning, Assistant Professor of Agricultural Entomology; Christina Howard, Maine New Farmers Project Manager Spotted wing drosophila fruit fly trap counts remain fairly stable and moderate at this time. Sites that are no longer spraying because harvest is complete are seeing higher numbers […]

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Spotted Wing Drosophila Alert — September 5, 2025

David Handley, Vegetable and Small Fruit Specialist; James Dill, Pest Management Specialist; Phil Fanning, Assistant Professor of Agricultural Entomology; Christina Howard, Maine New Farmers Project Manager Spotted wing drosophila fruit fly trap counts were little changed from last week. Sites that are no longer spraying because harvest is complete are seeing higher numbers than sites […]

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