The genus Diplotaxis Kirby includes 241 species ranging from Panama to Canada, with most species (76%) founded in Mexico; these species are arranged in 38 species-groups, and 6 species are unassigned (McCleve 1993; Davidson & Davidson 2006; Delgado 2011).
Key to the Simplex Species-Group of Diplotaxis (Modified from Vaurie 1958; Delgado & Capistran 1993) 1.
Two new species of Diplotaxis Kirby, 1837, from Arizona with a key and notes on the D.
A new species of the genus Diplotaxis Kirby, 1837 (Coleoptera: Scarabaeidae: Melolonthinae: Diplotaxini) from northeastern Mexico.
Three new species of flightless Diplotaxis from Oaxaca, Mexico (Coleoptera: Scarabaei dae: Melolonthinae).