Holopogon vockerothi Martin Holopogon vockerothi Martin, 1959: 31. Recognition characters: Blackish species; length 7 mm; mystax blackish brown with some pale setae; thorax brown pollinose with brown setae, thinner medially than laterally and along the anterior margin; wings hyaline, slightly tinged with sparse, brown microtrichia, pale setae at base of costal vein; abdomen shining blue-black, brown setae dorsally; legs black; hind femora with apical half of dorsal surface with sparse, reddish brown, recumbent setae, basal half with white, erect setae; hind tibiae with dense short, orange-yellow setae ventrally, dark reddish brown setae anteriorly and posteriorly. Distribution: PLATTE: Fort Laramie to Wheatland Road 11, 13 km SW of Fort Laramie, 28 July 1984 (HBL) (specimen in CAS). Habitat: Grama-needlegrass-wheatgrass grassland vegetation type. Ethology: None known. Prey: None known.

Published as part of Lavigne, Robert J. & Dennis, Steve, 2019, Robber flies (Insecta: Diptera: Asilidae) of Wyoming, USA with keys to genera and species, pp. 1-126 in Zootaxa 4662 (1) on page 80, DOI: 10.11646/zootaxa.4662.1.1, http://zenodo.org/record/3383448