Sandplain
Guides
Callophrys irus
Frosted Elfin
Callophrys irus, the frosted elfin, is a rare Lycaenid butterfly endemic to fire-maintained habitats in eastern North America. Adults are small with brown forewings and frosted gray hindwings with a short tail. The species has declined across much of its range, with many populations now isolated and some presumed extirpated. It is listed as threatened or endangered in multiple eastern U.S. states.