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 Subfamily Brachyrhopalinae Genera found in Wyoming : Cyrtopogon , Eucyrtopogon , Heteropogon , and Holopogon . Key to Genera [adapted from Nelson (1987) ; Wood (1981) ] 1 Wing with brown (dark) spots at crossvein r-m, at bifurcation of R 4 and R 5 , and at apex of cell d, other spots also may be present; bifurcation of R 4 and R 5 proximal to or level with apex of cell d....................................... Eucyrtopogon - Wing hyaline or darkened (infuscated), or if brown spots are present (some Cyrtopogon and Heteropogon ), not in the three positions given above; bifurcation of R 4 and R 5 distal to apex of cell d............................................ 2 2 Face strongly convex or inflated, when viewed from side extending greater than length of antennal scape past eye margin; dorsocentral bristles of thorax setae like or lacking; moderate to abundant pile on scutum.................... Cyrtopogon - Face flat or slightly convex; dorsocentral bristles well developed, prominent; little or no pile on scutum................. 3 3 Hind tibiae much enlarged, as thick as or thicker than hind femora; CuA 2 and A 1 joined before wing margin..... Holopogon - Hind tibiae thinner than hind femora; CuA 2 and A 1 ending separately in wing margin....................... Heteropogon