Laphria ferox Williston

Laphria ferox Williston, 1883: 29 .

Recognition characters: Black and yellow species; length 12–14 mm; mystax black with few yellow setae in middle; patch of yellow pile below each antenna; thorax brown pollinose with black setae and setae; scutellar setae and bristles black; wings gray; abdomen black with mat of dense yellow setae covering all segments dorsally except black genitalia; legs, femora and tibiae black, tarsi dark reddish brown, setae and bristles black; basistyle of male with median lamellate brush-like appendage apparently formed of coalescent bristles.

Distribution: PARK: Pahaska Campground, Pahaska Tepee (E entrance of Yellowstone Nat’l, Park), 21 Aug. 1963 (LJS, RJL).

Habitat: Pine-douglas fir forest (clearings within the forest where shrubs and grasses are dominant) vegetation type. Clearings within mixed coniferous forest.

Ethology: Nothing known.

Prey: None known.