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 Ospriocerus minos Osten-Sacken Ospriocerus minos Osten-Sacken, 1877: 291 . Recognition characters: Black species; length 17–22 mm ; mystax black, face slightly gray pollinose; thorax subshining black, vestiture black; scutellum black; wings black; abdomen black; legs and vestiture black. Distribution: PLATTE: Gray Rocks Ranch, Camp Guernsey , WANG, 25 June 2008 ( CSU , GMAD ). Habitat: Grama-needlegrass-wheatgrass grassland vegetation type . Ethology: Nothing known. Prey: None known.