Heteropogon senilis (Bigot)

Anisopogon senile Bigot, 1878: 423 .

Recognition characters: Blackish species; length 13 mm; mystax black; thorax gray pollinose; wings hyaline; abdomen shining black dorsally, lateral setae on abdominal segments 1–4 yellowish white; legs, femora black, tibiae and tarsi tawny, setae on legs white, bristles black.

Distribution: BIG HORN: Shell Canyon Falls, Big Horn Mtns., 22 July 1953 (PBL-UK). PLATTE: Laramie Peak, 17 July 1964 (RJL, FRH).

Habitat: Pine-douglas fir forest (clearings within the forest where shrubs and grasses are dominant) and saltbrush greasewood vegetation types.

Ethology: Nothing known.

Prey: None known.