Female Plebejus icarioides eosierra, the 'Eastern Sierra' Boisduval's Blue, at Kelso Valley near Sageland. April 29, 2008.

Plebejus icarioides eosierra, same day as above. They were common around their host, Lupinus excubitus.

Same day as above. The Eastern Sierra Blue was described in 1998 in Systematics of Western North American Butterflies, pp. 183-4.