Genus Diactis Loomis, 1937

Diactis Loomis, 1937, Proc. U.S. Natl. Mus. Wash., 84 (3006): 110. Type species: D. soleata Loomis, by original designation. Shelley, 1996, Ent. Scand., 27 (1): 40.

Etiron Chamberlin, 1941, Bull. Univ. Utah, Biol. Ser., 6 (11): 21. Type species: E. paroicum Chamberlin, 1941, by original designation. Synonymized by Hoffman (1980).

Eight very localized species, southwesternmost California, USA.