Acmon Blue (Icaricia acmon)
Emerald-Studded Blue

 Acmon Blue 



Corel Draw Photographic Images CD-ROM
Link provided by: The Butterfly Website.


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Species Summary

Eggs are pale green, and are usually laid on wild buckwheat (Eriogonum), locoweed (Astragalus), bird's foot trefoil and deer weed (Lotus), lupine (Lupus), legumes, and knotweed (Polygonum aviculare)

Larva are dingy yellow with a green back-stripe, various side markings, and are covered with fine white hair. Young larva will overwinter.

Pupa are brown with a greenish abdomen.

Adult males are lilac-blue with thin black margins. (Females tend to be brown, with blue limited to wing bases.) Underside of wings is white or grey with many black dots. Outermost hind wing black dots are capped with a metallic green.

Mainly dwells in western North America (Mexico to Canada) ranging eastward into the Dakotas, and the western edges of the Great Plains. Isolated populations in Minnesota, Nebraska, and Kansas.

Avoids dry deserts, thick forests, and urban areas. Populations have been found as low as sea level and as high as 10,000 feet.


Page last updated: Oct. 24, 1997