
Appearance
The wingspan is 38–56 mm. The ground color of the wings is yellowish-tan with brownish-grey or brown mottling. The forewings have a fine, mostly straight postmedial line. The hindwing outer margin is scalloped. Adults are on wing from March to August in most of the range, but year round in the south. There are two generations per year.Food
The larvae feed on the leaves of various trees, including ash, basswood, birch, elm, fir, maple, poplar and willow. Young larvae have a dark brown body. Older larvae have a greenish or tan to dark purplish-brown body.References:
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