Lestomyia sabulona (Osten-Sacken)

Clavator sabulonum Osten-Sacken, 1877: 292 . Recognition characters: Grayish species; length 9–11 mm; mystax white; thorax gray and brown pollinose; scutellar setae lacking; scutellar bristles 6, white; wings hyaline; abdomen gray pollinose, lateral bristles on first abdominal segment white; legs black except for reddish brown ring at apex of femora and base of tibiae on all legs.

Distribution: ALBANY: West Laramie, 20 June 1960 (RJL). BIG HORN: Greybull, 3 June 1965 (RJL); Greybull, Metz Smith Farm, 3 June 1965 (RJL) (specimen in CAS). FREMONT: Lander, WANG, LTA, 20 May 2005 (CSU, GMAD); Shoshoni, 16 km S, 22 June 1965, 23 June 1965 (RJL) (specimen in CAS). 1–2 June 1966 (RJL); 1 July 1965 (FRH); 5–8 June 1972 (RJL, SD). NATRONA: Casper Mtn., 18 July 1968 (RJL). PLATTE: Dwyer, 25 June 1957 (DRT); Guernsey, 8 June 1961, 3–24 May 1962 (RJL); Glendo, 26 May 1969 RE/gh study A-Misc. SWEETWATER: Rock Springs, 16 June 1959 (ADD, WDR). Recorded from Wyoming by: Adisoemarto (1967) (Rawlins); Cannings (1994); Cole (1969); Curran (1942); Dennis & Lavigne (1975) (as Lestomyia sabulonum; as prey of Stenopogon inquinatus), (2007) (as Lestomyia sabulonum).

Habitat: Saltbrush-greasewood shrub, sagebrush steppe shrub and wheatgrass-needlegrass shrub steppe shrub and grassland, and grama-needlegrass-wheatgrass grassland vegetation types. Open range, short- to mid-grass plains in wind-protected swales; rangeland.

Ethology: Rests on and forages from sand, cactus and grass stalks 5–15 cm above soil.

Prey: DIPTERA, Bombyliidae: Mythicomyia rileyi Coquillet, 16 km S of Shoshoni, July 1965; Milichiidae: Leptometopa halteralis (Coq.), 16 km S of Shoshoni, 5 June 1972; HEMIPTERA (Homoptera), Cicadellidae: Aceratagallia uhleri (Van Duzee), Dwyer, 8 June 1961; Mocuellus sp.; HYMENOPTERA: Chalcidae; unidentified (two records); Halictidae: Dialictus sp., 16 km S of Shoshoni, 8 June 1972; Pompilidae: Anoplius sp. HYMENOP- TERA (see Dennis & Lavigne 2007).