Asilus Linnaeus

Asilus Linnaeus, 1758: 605

Species found in Wyoming: Asilus vescus .

Asilus vescus Hine

Asilus vescus Hine, 1918: 320 .

Recognition characters: Grayish black species; length 7–10 mm; mystax black above, white below; sides of thorax gray pollinose, dorsally brown pollinose, two dorsal black stripes separated by a gray line; scutellum with 2 black bristles on posterior margin; wings hyaline, slightly gray on posterior margin and at apex; abdomen brown pollinose with gray pollinose bands apically; legs, femora black, fore- and mid-tibiae blackish, hind tibiae reddish brown.

Distribution: SWEETWATER: Burnt Fork, 19–26 June (VMT-BYU). TETON: Biological Station at Moran, Grand Teton National Park, 2,042 m (6,700 ft), 13 Aug. 1962 (JGE).

Habitat: Sagebrush steppe shrub and grassland vegetation type.

Ethology: Nothing known.

Prey: None known.