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"Outer margin of forewing is unevenly scalloped; costal margin of hindwing is almost straight. Upperside of male forewing is gray with black and white markings; female is yellowish brown with dark brown and white markings. Hindwing of both sexes is mostly red with a pale yellow border; blue patch may appear as a single eyespot or be divided by black bands to create two or three spots. Caterpillar Hosts: Apple (Malus sylvestris), peach and plum (Prunus), ash (Fraxinus), elm (Ulmus), poplar (Populus), birch (Betula), and willow (Salix)."