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Extension > Garden > Diagnose a problem > What insect is this? > Garden Pests > Flies, moths, wasps,and other insects with obvious wings - Under 1/4 inch long > Apple maggot

Apple maggot
Photo Credit: Univ. of Minnesota, Dept. of Entomology

Apple maggot
Rhagoletis pomonella
Size: ¼ inch long

Where/When: Primarily feeds on apples and large crab apples. Appears in early July and is active until September. Peak activity occurs from late July through early August.

Significance: Causes distorted fruits due to oviposition by adult flies. Pulp breaks down, discolors, and starts to rot as a result of maggots tunneling through the flesh.
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