From past files . Nectaring on Asclepias fasciculata . Mitchell Canyon .
From past files . Female nectaring on Coyote Brush .
From past files . The plant is Marrubium vulgare . Juniper Campground area .
This is the spring female, form cottlei, which resembles a lupine blue.
A fresh male .
The Acmon Blue (Plebejus acmon) is a North American butterfly. It ranges mainly in California but can be seen north to Oregon and south through Baja California. The tops of the wings are blue with dark edges in males and brown in females. Its underside is white with black spots for both sexes with a red-orange band on the hindwing. Adults feed on nectar while caterpillars can feed on buckwheats, lupines, trefoils, and milkvetches.