Nearctic/Neotropical: key to genera in Evenhuis, 2025: “Review of the genus Metacosmus Coquillett (Diptera: Bombyliidae: Tomomyzinae) with descriptions of new species, and discussion of an interesting tergal feature found in the subfamily." Link
All: key to species in Evenhuis, 2025: “The genus Amphicosmus Coquillett (Diptera: Bombyliidae: Tomomyzinae), with key to species, and description of a new species collected on R.H. Painter’s fateful last collecting trip." Link
All: key to species in Yeates, 1996: “Revision of the Genus Docidomyia White (Diptera : Bombyliidae)." Link
All: key to species in Evenhuis, 2025: “Review of the genus Metacosmus Coquillett (Diptera: Bombyliidae: Tomomyzinae) with descriptions of new species, and discussion of an interesting tergal feature found in the subfamily." Link
All: key to species on page 53 of Hesse, 1956: “A revision of the Bombyliidae (Diptera) of Southern Africa, Part III." Link
Nearctic: key to species in Melander, 1950: “Taxonomic notes on some smaller Bombyliidae (Diptera)." Link
All: key to species on page 74 of Hesse, 1956: “A revision of the Bombyliidae (Diptera) of Southern Africa, Part III." Link