Holopogon Loew, 1847

Lavigne, Robert J. & Dennis, Steve, 2019, Robber flies (Insecta: Diptera: Asilidae) of Wyoming, USA with keys to genera and species, Zootaxa 4662 (1), pp. 1-126 : 77-78

Holopogon Loew

Holopogon Loew, 1847: 473 .

Species found in Wyoming: Holopogon albipilosus , H. atripennis , H. caesariatus , H. currani , H. seniculus , and H. vockerothi .

Key to Species [adapted from Martin (1959)]

1 Thorax laterally without bristles anterior to the transverse suture; posterior abdominal segments with long and dense setae ventrally.......................................................................... Holopogon caesariatus

- Thorax laterally with two to several slender bristles, usually of different lengths, anterior to the transverse suture; setae ventrally on posterior abdominal segments not dense................................................................. 2

2 Disc of scutellum with few to many setae...................................................................3

- Margin of scutellum with setae, disc without setae or, if with a few setae, wings deep brown......................... 5

3 Wings with yellow veins, microtrichia of wing white; vestiture white, long, dense; hind tibiae not distinctly club shaped........................................................................................ Holopogon seniculus

- Wings with brown veins, at most yellow basally; microtrichia brown; vestiture both pale and dark; hind tibiae distinctly club shaped.............................................................................................. 4

4 Thorax medially shining with a brown tomentose, usually geminate, medial stripe outlined by subshining, lateral black stripes.................................................................................. Holopogon vockerothi

- Thorax medially shining with white to yellow tomentum, median stripe indistinct or not present...... Holopogon albipilosus

5 Setae on the margin of scutellum long, wings deep brown.................................... Holopogon atripennis

- Weak marginal setae on scutellum, shorter than the stronger posterior setae on the thorax; wings hyaline.. Holopogon currani