About Phaeostrymon alcestis (Edwards, 1871)
Satyrium alcestis, commonly known as the soapberry hairstreak, is a species of gossamer-winged butterfly. This species was originally described as Thecla alcestis Edwards, 1871, and was long treated as the only member of the former genus Phaeostrymon, bearing the scientific name Phaeostrymon alcestis (Edwards, 1871). It has since been revised to the classification Satyrium alcestis. The soapberry hairstreak is distributed in the southwestern United States and Mexico. Its larvae are most often found feeding on soapberry plants.