In our area a high-altitude species, generally found in cold, windwept sites where males hilltop. Both sexes visit puddles and can often be seen on the wet soil adjacent to melting snowbanks. At Donner confined to the east end of the pass; on Castle and Basin Peaks and on rocky knobs along the ridge in between. This species appears to have decreased in abundance in recent years and is no longer seen every year on the transect. It usually flies in July but there are a few records as late as September. The hosts are presumed to be perennial bunchgrasses. Adults have been found on flowers of pink dogbane and various composites.