Identification: Much individual and seasonal variability. Females are larger than males. Upperside of wings ranges from reddish brown to reddish orange to brownish yellow. Forewing has a postmedian line which is distinct and bent toward the wing base or almost absent, and 0-2 white cell spots. Hindwing has no submedian line. Both wings have varying amounts of scattered black specks, or none at all.

Wing Span: 1 7/8 - 2 5/8 inches (4.7 - 6.7 cm).

Life History: Adults emerge in the evening and mate later that night. After dusk the next day, females lay eggs singly or in pairs on host plant leaflets. Hatching can occur in as few as 5 days, if the air temperature has been warm enough. The whole life cycle can be completed in 6 weeks. Fully-grown caterpillars pupate in shallow underground chambers. The late summer broods overwinter as pupae.

Flight: Populations in the extreme north have 2 broods each year from May-June and from July-August.

Caterpillar Hosts: Honey locust (Gleditsia triacanthos) and Kentucky coffee tree (Gymnocladus dioicus).

Adult Food: Adults do not feed.

Habitat: Deciduous woodland.