Orange Sulphur - Colias eurytheme
A female Colias eurytheme (Orange Sulphur) from Towsley Canyon in Newhall, Los Angeles County on June 29, 2008.
Orange Sulphur - Colias eurytheme
This is a male Colias eurytheme from Palomar Mountain in San Diego Co. July 24, 2007.
Orange Sulphur - Colias eurytheme
A passing butterfly appeared to be a white, but it was in fact this female Colias eurytheme form 'alba'. Cottonwood Spring in Joshua Tree National Park on March 18, 2008.

©Dennis Walker