Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

Friday's Blue
Plebejus fridayi Chermock, 1945

Family: Lycaenidae
Subfamily: Polyommatinae
Identification: Upperside of male blue with narrow dark border; upperside of female bright blue with narrow pale markings. Underside of both sexes is dull gray-tan, with an overcast of greenish blue scales that are strong at the base but decreasing in intensity outwardly.
Wing Span: Males 25 mm, females 28 mm.
Life History:
Caterpillar Hosts: Friday's Blues are closely associated with sites containing their caterpillar host plant, Whitney Locoweed (Astragalus whitneyi)
Adult Food:
Management Needs:
Comments: NULL