Robber flies (Insecta: Diptera: Asilidae) of Wyoming, USA with keys to genera and species Author Lavigne, Robert J. Author Dennis, Steve text Zootaxa 2019 2019-08-30 4662 1 1 126 journal article 25823 10.11646/zootaxa.4662.1.1 7070ef91-15db-4b7e-a87d-72e7b0bdb192 1175-5326 3383448 366A1E81-946C-4ED4-8A65-C51151FE87CC 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.