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 Negasilus cumbipilosus (Adisoemarto) A silus cumbipilosus ( Adisoemarto, 1967 ) : 62. Recognition characters: Gray species; length 10–12 mm ; mystax pale yellow; thorax light gray pollinose; scutellum gray pollinose; posterior margin of scutellum with long bristles; wings hyaline, faintly clouded apically; abdomen light gray pollinose; legs, femora black; tibiae and metatarsi red, remaining tarsal joints black with reddish tinge. Distribution: SHERIDAN: Sheridan, WANG, LTA, 29 July–13 Aug. 2010 ( BCK , DAL ) ( CSU , GMAD ). Habitat: Grama-needlegrass-wheatgrass grassland vegetation type . Ethology: Nothing known. Prey: None known.