Length: male, 1% in.; female, 1 1/2 in.; dark grayish brown; wing with disc yellow and outer half black; makes loud crackling noise in flight. Adults, June to September.

Rocky mountain slopes and ridges in wooded areas in the Transition and Canadian zones. Northern Arizona from Kaibab Plateau and Lukachukai Mountains south to Flagstaff and the White Mountains.

Western United States to Canada.