Holopogon albipilosus Curran

Holopogon albipilosus Curran, 1923: 207 .

Recognition characters: Blackish species; 6.5– 7 mm; mystax white; thorax white pollinose, no brownish pollen; scutellum with long, slightly woolly pile; wings pure hyaline; abdomen shining black with pale yellowish or white pile that is longer on the sides, especially basally; legs shining black, hind tibiae greatly enlarged, hind tarsi gradually tapering, pile and bristles of legs wholly whitish, pubescence on front and hind tibiae and tarsal pads dull yellowish.

Distribution: ALBANY: Easterbrook, 1,981 m (6,500 ft), 23 June 1948 (FW, WM); Snowy Range Mtns., 4 July 1959 (RJL); 37 km S of Laramie, 2,306 m (7,564 ft), numerous records, 11 July–16 Aug. 1973 (SD, RJL), 8 Aug. 1973 (RJL) (Voucher sp. #32). CARBON: Long Tree, 15 July 1950 (GFK). FREMONT: Lander, 22 July 1953 (RRD); Sweetwater River crossing with Highway 28, 13 July 1955; Torrey’s Lake, 7 Sept. 1895 (William Wheeler coll.). NATRONA: Casper, 3 June 1960. SWEETWATER: Green River, 1,859 m (6,100 ft), 2 July 1920. TETON: Jackson, 1,920 m (6,300 ft), 13, 17 July 1920; 22 July 1953 (RRD); 5 km W of Hoback Jct., 19 July 1971 (JRP) (38 specimens in CAS). UINTA: Fort Bridger, 26 June 1939 (GFK-USU). Recorded from Wyoming by: Adisoemarto (1967) (Carbon County, Green River, Jackson, near Lander); Dennis & Lavigne (1975, 2007); Geller-Grimm (2018); Lavigne & Dennis (1994); Martin (1959) (Albany, Carbon, and Natrona Counties, Green River, Jackson); Martin & Wilcox (1965).

Habitat: Douglas fir forest and grama-needlegrass-wheatgrass grassland vegetation types. Short- to mid-grass rangeland and moist mountainous valleys; swampy areas (see Dennis & Lavigne 1975).

Ethology: Always foraged from twig tips of mountain gooseberry ( Ribes montigenum McClatchie) 52 cm to 3 m above the ground; courtship (see Dennis & Lavigne 1975).

Prey: COLEOPTERA, DIPTERA, HEMIPTERA (Heteroptera, Homoptera), HYMENOPTERA, PLECOP- TERA (see Dennis & Lavigne 1975, 2007; Lavigne & Dennis 1994).