Ospriocerus aeacidinus (Williston)

Stenopogon aeacidinus Williston, 1886: 289 .

Recognition characters: Gray and orange species; length 14–20 mm; mystax white; thorax grayish yellow pollinose; meron with fine short setae; wings brown; abdomen yellowish red; segments 1 and 7 black as is segment 6 laterally; legs black to reddish black, bristles and setae black.

Distribution: FREMONT: near Lander, 1,524 –2,438 m (5,000 –8,000 ft), July 1895 (RM-UK). Recorded from Wyoming by: Geller-Grimm (2018).

Habitat: Sagebrush steppe shrub and grassland vegetation type.

Ethology: Nothing known.

Prey: None known.