The Acmon Blue (Plebejus acmon) is a small butterfly found in California west of the Sierra Nevada south into northern Baja California. It is sometimes spotted into Oregon. Upper sides of the male are bluish while the female more a brown coloration. The underside is white with black spots. Both sexes feature a red-orange band on the hindwing.
Wing spread: 0.75" - 1.1"
Host Plants: Buckwheats, lupines and milkvetches
|Egg stage||3 to 6 days|
|Caterpillar (larval) stage||2 to 3 weeks|
|Chrysalis (pupal) stage||8 to 12 days|
|Adult butterfly stage||4 to 10 days|
Acmon Blue Butterfly
Acmon Blue Butterfly in California
Photos by and courtesy of Alan Schmierer