Akingbohungbe, 1996 (rev. Afrotropical and W Palaearctic species); Eyles, 1971 (world list), 1972 (supplements to it); Ghauri & Ghauri, 1983 (key to world genera); Gorczyca & Herczek, 2002 (key Polish spp.); Herczek, 1993 (classification); Konstantinov, 2003 (aedeagus, class.); Qi, 2005 (rev. Chinese spp.); Wheeler & Henry, 1978 (biol.); Yasunaga et al., 2017 (rev. Taiwan and Japanese Southwest Islands, Sophianini).