Fabaceae-hosts
Guides
Glaucopsyche
blues, silvery blues, green-underside blues, black-eyed blues
Glaucopsyche is a genus of small butterflies commonly called 'blues' in the family Lycaenidae. The genus has a Holarctic distribution, with most species occurring in Palearctic Asia and several species in North America. It includes approximately 30 described species, among them the extinct Xerces blue (G. xerces), last seen in the early 1940s on the San Francisco Peninsula. Several species have notable conservation status, including the federally endangered Palos Verdes blue (G. lygdamus palosverdesensis).