Philotes sonorensis

Description

Philotes is a genus of butterflies in the family Lycaenidae. Philotes is a monotypic genus containing only Philotes sonorensis, the Sonoran blue or stonecrop blue, found in North America in California, Colorado and northern Mexico. The habitat consists of rocky washes, outcrops and cliffs in deserts. The wingspan is 22–25 mm. The upperside is silvery blue with red spots at the outer margin of the forewings. The hindwings of females also have red spots. Adults are on wing from February to March in one generation per year. The larvae feed on Dudleya species, including D. cymosa, D. lanceolata and D. saxosa. They bore into the leaves of their host plant. Chrysalids hibernate under stones.