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 Machimus adustus (Martin) Asilus avidus Wulp, 1869: 82 . Recognition characters: Brownish gray species; length 14–16 mm ; mystax black above, white below; thorax brown and gray pollinose; scutellar setae white, bristles 4 black; wings hyaline with dark tinge at apex; abdomen gray pollinose with brown pollinose areas dorsally; lateral setae on first abdominal segment white; legs reddish brown with femora black anteriorly. Distribution: ALBANY: Pole Mtn., July 1960 ( RJL ). FREMONT: near Lander, 1,524 –2,438 m ( 5,000 –8,000 ft ), Aug. 1895 ( RM-UK ); paratype , one male, Pole Mtn., 10 July 1960 ( RJL ). LINCOLN: Fossil, 1 Aug. 1964 ( CD , BD) (specimen in CAS ). SUBLETTE: paratype series - three males, two females, S of Pinedale, on sagebrush, 24–29 July 1964 ( RJL ); TETON: paratype , one male, West Entrance, Targhee National For., 8 Aug. 1967 ( RJL ) ( Martin 1975 ). Recorded from Wyoming by: Fisher & Wilcox (1997) ; Geller-Grimm (2018) ; Martin (1975) . Habitat: Pine-douglas fir forest (clearings within the forest where shrubs and grasses are dominant), and sagebrush steppe shrub and grassland vegetation types . Ethology: Nothing known. Prey: None known.