Banks, 1917: 54 Robber flies (Insecta: Diptera: Asilidae) of Wyoming, USA with keys to genera and species Lavigne, Robert J. Dennis, Steve Zootaxa 2019 2019-08-30 4662 1 1 126 3S992 Banks Banks [151,421,1047,1074] Insecta Asilidae Laphria Animalia Diptera 91 92 Arthropoda species sackeni     Dasyllis sackeni  Banks, 1917: 54.   Recognition characters:Golden orange species; length 16–22 mm; mystax orange except for a few black setae on side below; thorax orange pilose except mesonotum which is largely short black pilosity; scutellar setae and bristles orange; wings brownish; abdomen brownish, orange pilose; legs black, pile of femora and tibiae black and orange and of tarsi black, bristles black.  Distribution:Recorded from Yellowstone National Park, 26 June 1907( WR) by McAtee (1918)under the name  L. vulturO. S. Wilcox (1936c)states, “This is the species (  sackeni) referred to as  vulturby McAtee, Mr. Greene having compared specimens with McAtee’s material in the U. S.National Museum.”  Habitat:Douglas fir forest, sagebrush steppe shrub and grassland vegetation types.  Ethology:Nothing known.  Prey: COLEOPTERA, Scarabaeidae: Yellowstone National Park, 26 June 1907( WR).