About Erynnis propertius (Scudder & Burgess, 1870)
Erynnis propertius, commonly known as the Propertius duskywing, is a species of butterfly belonging to the family Hesperiidae. This species is found along the west coast of North America, ranging from southern British Columbia south along the Pacific Slope to Baja California Norte. It is one of the most frequently observed skippers in California, and its wingspan measures between 35 and 45 mm.