The banded hairstreak butterﬂy has a wingspan of one and three-sixteenths to one and seven-sixteenths inches. There are two, small tails on each of the hindwings. The underside of the hindwing is brown and shows a line of dark, white-edged dashes. The blue spot on the hindwing does not have an orange cap. The overall color of this butterﬂy is gray-brown. The caterpillar is green with white stripes.
The banded hairstreak butterﬂy may be found statewide in Illinois. It lives in oak-hickory forests, their edges and nearby ﬁelds. It feeds on hickory, oak and walnut trees. The life cycle includes egg, larva, pupa and adult stages. One brood is produced each year. This butterﬂy is active July through August. It overwinters in the egg stage.