Cyrtopogon montanus wilcox, James, 1942

Lavigne, Robert J. & Dennis, Steve, 2019, Robber flies (Insecta: Diptera: Asilidae) of Wyoming, USA with keys to genera and species, Zootaxa 4662 (1), pp. 1-126 : 70-71

Cyrtopogon montanus wilcox i James

Cyrtopogon montanus wilcoxi James, 1942: 124 .

Recognition characters: Blackish species; length 14–16 mm; third antennal segment black; mystax white with a few black bristles above; thorax gray and brown pollinose; wings smoky; macrotrichia of costal vein black; scutellar setae black, abdomen shining black with gray pollinose fasciae entire on tergites 2–5; lateral setae on abdominal segments 1–4 in male, black except for some white pile on segment 1, in female lateral setae on white; wings with brownish cast, legs, femora and tibiae black, tarsi reddish brown.

Distribution: ALBANY: Pine Unit, Libby Creek/Snowy Range Mtns./Medicine Bow National For., 12 June 1977 ( RJL). CARBON: Copperton, 2 Sept. 1959 ( WDF, ADD); Ryan Park, 19–20 July 1964 ( LJS). NATRONA: Casper Mtn., 18 July 1968 ( RJL), 27 July 1975 ( RJL); PLATTE: 56 km SW of Wheatland/Rte. 34, 1,829 m (6,000 ft), 24 May 1978 ( RJL). SHERIDAN: Big Horn Mtns., 2.5 km NE of top of Granite Pass, elevation 2,690 m (8,825 ft) ( HBL) (three specimens in CAS). TETON: Grand Tetons, Jackson Hole, 28 June 1938 ( ECVD) (specimen in CAS); Grand Tetons, Jenny Lake, 25, 28 June 1938 ( ECVD) (three specimens in CAS); Grand Tetons National Park, 23 June 1938 ( ECVD) (two specimens in CAS). Recorded from Wyoming by: Bullington & Lavigne (1992); Dennis & Lavigne (1976d) (oviposition; as Cyrtopogon inversus ); Dennis et al. (2007, 2010); Geller-Grimm (2018); Lavigne & Dennis (1994).

Habitat: Douglas fir forest and pine-douglas fir forest vegetation types.

Ethology: Forages from sun-lit surfaces of boulders, rarely for brief periods from other substrates; courtship (see Bullington and Lavigne 1992).

Prey: All records are for North Fork Campground, Snowy Range Mtns. unless otherwise indicated. DIPTERA , Bibionidae : Bibio knowltoni Hardy , 28 May 1981, 1 June 1981; Ephydridae : Scatella laxa Cresson, Ryan Park , 20 July 1964. HEMIPTERA (Heteroptera) , Aradidae : Aradus sp., 3 July 1975. Miridae : Irbisia sp., 8–9 June 1978; Labops hesperius Uhler , 8 June 1978; Lopidea sp., 4 July 1975; Phyllopidea picta Uhler , 5 June 1981. COLEOP- TERA, DIPTERA , HEMIPTERA (Homoptera) , HYMENOPTERA (see Bullington & Lavigne 1992; Dennis & Lavigne 2007; Dennis et al. 2010; Lavigne & Dennis 1994).