The sylvan hairstreak (Satyrium sylvinus) is a butterfly of the family Lycaenidae. It is found in western North America, from British Columbia south-east to Wyoming, Colorado and New Mexico and south through California to Baja California Norte, Mexico.
The wingspan is 25âÂÂ30 mm.
The larvae feed on the leaves of Salix species. The species overwinters as an egg.
Listed alphabetically.