Erax prolificus ( Osten-Sacken, 1887 )
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
(Osten-Sacken)
Osten-Sacken
Osten-Sacken
1887
[151,589,1263,1290]
Insecta
Asilidae
Carinefferia
GBIF
Animalia
Diptera
36
37
Arthropoda
species
prolifica
Erax prolificus( Osten-Sacken, 1887): 202.
Recognition characters:Yellowish gray to brownish gray species; length 15–20 mm; mystax white mixed with some black and sometimes yellowish bristles; thorax mesonotum yellowish gray to brownish gray; dorsocentral stripe brown, narrow; crest formed of black setae subequal in length to antennal segments 1–2 with very few black bristles; anterior of scutellum with tuft of short, white setae; scutellum with short white hairs medially, long black bristles along margin; wings tinged with brown, costal vein dilated and subcostal vein black; male abdominal segments 2–4 black with mostly black setae, 5–7 white with white setae that are long and sparse laterally; female segments 2–7 black with black setae, venter 1–7 with erect white hairs, sometimes black on segment 7; legs with white setae and black and pale bristles, femora black with greenish metallic luster, tibiae red, darker apically, tarsi red. Distribution:TETON: Grand Teton National Park, 18 Aug. 1931( LDA) (female specimen in CAS). Habitat:Sagebrush steppe shrub and grassland vegetation type. Ethology:Nothing known. Prey:None known.