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 Proctacanthella Bromley Proctacanthella Bromley, 1934: 96 . Species found in Wyoming : Proctacanthella cacopiloga , P. exquisita , and P . leucopogon . Key to Species [adapted from Hine (1909) ; Wilcox (1965b) ] 1 Anterior crossvein at or before middle of discal cell; upper male forceps (epandria) subequal in length to the lower ones, male genitalia tipped with pencil of fine white setae......................................... Proctacanthella cacopiloga - Anterior crossvein beyond middle of discal cell; upper male forceps longer than the lower ones....................... 2 2 Abdomen yellowish gray pollinose with a narrow brown dorsal stripe that is more prominent on segments 2–5; upper male forceps protruding 1/3 their length beyond the lower ones; male hypandrium with a medial fan of white setae on each side................................................................................... Proctacanthella exquisita - Abdomen brownish pollinose with gray margins; upper male forceps protruding half their length beyond the lower ones; male genitalia without a terminal pencil of setae........................................... Proctacanthella leucopogon