General: Spring Mountains Icarioides Blue Butterflies (Plebejus icarioides austinorum) are recognized by their blue wings with a dark border. The blue only shows when they are flying. On the underside of the wings, the black spots are larger on the forewing than on the hindwing. Females may be brown or blue.

Taxonomy: Family: Gossamer-wing Butterflies (Lycaenidae); Subfamily: Blues (Polyommatinae). Also referred to as Icaricia icarioides austinorum.

Comments: This subspecies is endemic to the Mt. Charleston area.