Adults that emerge in summer are green, but those that emerge in spring are tan. Two thin stripes on the wings parallel the outer edges; these markings flow uninterruptedly from forewings to hindwings. In the summer form, the edges of the wings can have a pink or pink-checkered “fringe” (thus the name).
Larvae are grayish, brownish or tan, with each segment bearing a pair of finlike projections. Their slight fuzziness makes them look like the remnants of a dead leaf. When they rest motionless on the edge of a dying leaf, they are perfectly camouflaged.