Lycaenidae is the second-largest family of butterflies, with over 6,000 species worldwide, whose members are also called gossamer-winged butterflies. They constitute about 30% of the known butterfly species.
The green hairstreak is a small butterfly in the family Lycaenidae.
The genus Callophrys consists of butterflies in the family Lycaenidae. It is apparently not monophyletic, but which of the taxa currently considered junior synonyms of Callophrys are valid genera remains to be determined.
Callophrys gryneus, the juniper hairstreak or olive hairstreak, is a butterfly native to North America. It belongs in the family Lycaenidae.
Callophrys dumetorum, the coastal green hairstreak, bramble green hairstreak, or bluish green hairstreak, is a butterfly of the family Lycaenidae. It is found in the United States in coastal California and rarely in inland California. Subspecies C. d. oregonensis is known as the Oregon green hairstreak.
Callophrys sheridanii, the Sheridan's hairstreak and Sheridan's green hairstreak, is a butterfly in the family Lycaenidae. It is found in North America along the south coast of British Columbia and parts of Nevada, Arizona, Saskatchewan, North Dakota, and New Mexico. In 2009, this species was adopted as the U.S. state butterfly for Wyoming.
Callophrys augustinus, the brown elfin, is butterfly of the family Lycaenidae. It is found from Newfoundland north and west through the northern United States and the prairie provinces to Alaska. To the south it ranges in Appalachian Mountains to northern Georgia and northern Alabama, further south through the western mountains to northern Baja California in Mexico. Subspecies iroides is known as the western elfin.
Satyrium favonius, the oak hairstreak or southern hairstreak, is a butterfly of the family Lycaenidae. It is found in the United States from southern New England and the Atlantic Coast south to peninsular Florida and west to central Illinois, south-eastern Colorado and the Gulf Coast.
Satyrium acadica, the Acadian hairstreak, is a butterfly of the family Lycaenidae. It is found in North America from British Columbia east to Nova Scotia and south to Idaho, Colorado, the northern Midwest, Maryland, and New Jersey.
Callophrys polios, the hoary elfin, is a butterfly of the family Lycaenidae. It has a very local distribution in the United States from Maine south to New Jersey and in the Appalachian Mountains to Virginia, west across the Great Lakes states and the southern prairie provinces and north to Alaska. Along the Pacific Coast it is found to northern California and in the Rocky Mountains south to northern New Mexico. It is listed as a species of special concern and believed extirpated in the US state of Connecticut.
Satyrium behrii, the Behr's hairstreak, is a butterfly of the family Lycaenidae. It is found in western North America from western Texas north and west through New Mexico, Arizona, and southern California to British Columbia.
Callophrys fotis is a species of butterfly in the family Lycaenidae, the gossamer-winged butterflies. It is known by several common names, including early elfin, desert elfin, Fotis hairstreak, Strecker's elfin, and Arizona gray elfin. It is native to the southwestern United States, where it occurs in southeastern California, Nevada, Utah, western Colorado, northern Arizona, and northwestern New Mexico.
Satyrium liparops, the striped hairstreak, is a butterfly of the family Lycaenidae described by John Eatton Le Conte in 1833. It is found in North America, from the Rocky Mountains south from southern Canada to Colorado, east to Maine and south to Florida.
Callophrys spinetorum, the thicket hairstreak, is a butterfly of the family Lycaenidae. It was described by William Chapman Hewitson in 1867. It is found in North America from British Columbia through the Rocky Mountains to New Mexico and Mexico and through California to Baja California. The habitat consists of pinyon-juniper forests, mixed woodlands, and coniferous forests.
Callophrys affinis, the western green hairstreak or immaculate green hairstreak, is a butterfly of the family Lycaenidae. It is found in western Canada and the western United States.
Callophrys johnsoni, the Johnson's hairstreak, is a butterfly of the family Lycaenidae. It is found in North America from British Columbia south to central California. The habitat consists of coniferous forests.
Erora laeta, the early hairstreak, is a butterfly of the family Lycaenidae. It is found in eastern Canada and the United States. The habitat consists of deciduous and mixed woods.
Callophrys xami, commonly referred to as the xami hairstreak or green hairstreak, is a butterfly included in the subgenus Xamia and the genus Callophrys in the family Lycaenidae. It was described by Tryon Reakirt in 1867. Other common names for this species, depending on the region, include green hairstreak and elfin. C. xami is considered to be a very rare species of butterfly, and its typical range is in southern Arizona and Texas including down south to Guatemala. The juniper hairstreak and the silver-banded hairstreak butterflies are similar species, but both differ significantly from C. xami in regards to the postmedian white line running across the butterfly wings.
Satyrium caryaevorus, the hickory hairstreak, is a butterfly of the family Lycaenidae. It is found in eastern North America, from southern Ontario west to Minnesota and Iowa, south in the Appalachian Mountains to eastern Tennessee.
