About Thorybes mexicana nevada Scudder, 1872
Thorybes mexicana is a butterfly in the Hesperiidae family, commonly called the Mexican cloudywing, mountain cloudy wing, or Nevada cloudy wing. This butterfly is found in high elevation mountains of the western United States, with its range extending south into Mexico. The subspecies Thorybes mexicana confusis is often recognized as a separate species, Thorybes confusis, which goes by the common names confused cloudywing or eastern cloudywing. This subspecies (or separate species) ranges from southeastern Pennsylvania west to Missouri, and south along the Atlantic Coastal plain to central Florida, the Gulf Coast, and Texas. Stray individuals can be found as far north as southeastern Kansas, southern Illinois, and New Jersey. The wingspan of Thorybes mexicana measures 29 to 35 millimetres, or 1.1 to 1.4 inches. Adults are active on the wing from June to August, with one generation produced per year. The larvae feed on plant species from the genera Trifolium, Vicia, and Lathyrus. Adult Thorybes mexicana feed on flower nectar.