Euphydryas chalcedona kingstonensis
Desert Mountain Checkerspot
Euphydryas chalcedona kingstonensis is a butterfly of the eastern Mojave in California. It flies in the Mojave National Preserve, with a type locality north of the Preserve in the Kingston Range, and across state lines in Nevada. It has a definite tan or light brown aspect to it mentioned in the original description which I personally found more apparent live than in photos.
The type locality is specifically a canyon 3/4 of a mile southwest of Horse Thief Spring in the Kingston Range. These chalcedona checkerspots are so variable (thus the common name "variable checkerspot") that I wanted to be sure and get my photos at the type locality, especially for comparison with the reddish corralensis, which I've photographed at its type locality, Rock Corral. In my second attempt at cross-country hiking into the canyons draining the rugged Kingston Peak this spring, I found a wash with huge Keckiella antirrhinoides var microphylla shrubs, and soon I began seeing the patrolling butterflies.