Satyrium calanus
Satyrium calanus, the banded hairstreak, is a butterfly in the family Lycaenidae. Appearance, behavior, and distribution. The banded hairstreak is a common hairstreak east of the Rocky Mountains in North America. It is a territorial butterfly that will challenge other butterflies invading its territory. Subspecies. Listed alphabetically: Life cycle. Eggs are laid singly on the host plants and hatch in the spring. There is a single brood that flies early June to late August. Host plants. Host plants include oak, hickory, and walnut (especially butternut).