Fischer, 1994a, 1994b (biol., morph., phyl.); Göllner-Scheiding, 1995 (Palaearctic catalogue); Kumar, 1974 (rev.); Leston, 1953a (morph., syst.); Leston, 1957b (authorship of family name); J.A. Lis & B. Lis, 1998 (key Polish spp.); Schaefer & Ahmad, 1987a (biol.).