The juniper hairstreak or olive hairstreak, Callophrys gryneusis, is a small butterfly native to North America. It belongs in the family Lycaenidae - t so-called "gossamer-winged butterflies" which represent about 30% of the known butterfly species. The family is traditionally divided into the subfamilies of the blues (Polyommatinae), the coppers (Lycaeninae), the hairstreaks (Theclinae) and the harvesters (Miletinae). Adults are small, under 5 cm usually, and brightly coloured, sometimes with a metallic gloss.
