
Appearance
The wingspan is about 18 mm. Adults are on wing from July to October depending on the location.
Food
The larvae feed on the acorns of "Quercus alba", "Quercus macrocarpa", "Quercus rubra" and "Quercus velutina" but are most noted for feeding on hazelnuts, seeds of the genus Corylus, and are a major pest of hazelnut orchards in the Pacific northwest.References:
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