Dioctriinae, Enderlein, 1936

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 : 85

Subfamily Dioctriinae

Genera found in Wyoming: Bohartia , Dicolonus , Echthopoda

Key to Genera [adapted from Wood (1981)]

1 Upper half of face and frons prominently swollen, bearing the antennae and a brush of abundant long setae below their bases that extend ventrally along lateral margin of face; anatergite setose....................................... Dicolonus

- Swelling at antennal base less well marked or nearly absent; upper part of face either bare or with only a single row of setae along eye margin; anatergite bare......................................................................... 2

2 Upper part of face bare; abdominal tergite 2 with a groove about 1/3 to 1/4 distance from base of segment and expanding laterally, thus separating a shiny raised crescent shaped area on the first third of the segment; scutellar margin with moderately long erect setae, as long as scutellum; disc of scutellum with appressed short setae............................. Echthodopa

- Upper part of face with a few weak setae beside eye and occasionally with a few under antennal bases; abdominal tergite 2 with groove close to proximal margin and not separating a crescent-shaped area; scutum bare or with sparse minute setae, scutellar margin with very short appressed setae.............................................................. Bohartia