All: key to genera on page 41 of Yamaguchi, Lamas, & Evenhuis, 2017: “A new Neotropical genus of bee flies (Diptera, Bombyliidae, Phthiriinae)." Link
Africa (southern): key to species on page 825 of Hesse, 1938: “A revision of the Bombyliidae (Diptera) of Southern Africa, Part I." Link
Nearctic: key to species on page 661 of Hall & Evenhuis, 2004: “Family Bombyliidae. In Flies of the Nearctic Region. Vol. V, Part 13, Number 7." Contact me
Nearctic: key to species on page 696 of Hall & Evenhuis, 2004: “Family Bombyliidae. In Flies of the Nearctic Region. Vol. V, Part 13, Number 7." Contact me
Canada (eastern): key to species in Kits, Marshall, & Evenhuis, 2008: “The bee flies (Diptera: Bombyliidae) of Ontario, with a key to the species of eastern Canada." Link