The pearl crescent is a small, brown butterﬂy with many black marks on the wings. The wingspan is about one and one-fourth to one and ﬁve-eighths inches. Males have a black knob at the tip of each antenna. The upper side of the wings is orange-brown with dark brown or black markings. The lower side of the wings is yellow-orange. There is a crescent in the dark marginal patch of the hind wings. The caterpillar is dark brown with brown spines and white head patches.
The pearl crescent butterﬂy may be found statewide in Illinois in open weedy areas, roadsides, pastures and ﬁelds. It is active April through November. Two to four broods are produced each year. The larvae feed primarily on asters. The species overwinters in the larval stage.