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Spotted Wing Drosophila Update for Maine Fruit Growers – August 15, 2012

Male Spotted Wing Drosophila

Male Spotted Wing Drosophila; photo by Griffin Dill. Actual size: 2-3 mm.

During the past week we have seen a significant increase in spotted wing drosophila coming to our traps in southern Maine. This suggests that the threat of infestation to any soft fruit or berries remaining in the field is now very high. We are catching these fruit flies in all of the locations where we have placed traps including Limington, Buxton, Springvale, Bowdoinham, Dresden, New Gloucester, Poland Spring, Mechanic Falls, Turner, Farmington, Wales, Litchfield, Fayette, Thorndike and Warren. In addition, traps in wild blueberry fields in Hancock and Washington counties have caught flies during the past week. We are confident that the fly is now widespread and active through most, if not all, of the southern, mid-state and coastal regions of the state.


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