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 Loew Ospriocerus Loew, 1866: 29 . Species found in Wyoming : Ospriocerus abdominalis , O. aeacidinus , O. latipennis , O . minos , O . nitens, and O. vallensis . Key to Species [adapted from Martin (1968) ] 1 Antennal style present above the excision.................................................................. 2 - Antennal style absent above the excision................................................................... 5 2 Wholly black species, abdomen shining black................................................. Ospriocerus nitens - Black, yellowish/reddish brown species, some of abdominal segments yellowish/reddish brown to red.................. 3 3 Yellowish/reddish brown species; some abdominal segments may have black markings; bristles and setae of legs white....................................................................................... Ospriocerus latipennis - Black species; some abdominal segments may be black, others yellowish red to red; bristles and setae of legs black....... 4 4 Thorax dorsally moderately shining brownish black; abdomen yellowish red.................... Ospriocerus aeacidinus - Thorax black; abdominal tergites 3–7 and sternites 4–6 red.................................... Ospriocerus vallensis 5 Abdomen completely black............................................................... Ospriocerus minos - Part of abdominal segment 2 and following segments at least dorsally yellowish red to red, one or more segments partially black............................................................................ Ospriocerus abdominalis