Jansson, 1976, 1986a; Kaiser, 1966; Wróblewski, 1958, 1960b, 1963.
Distribution
Aukema et al., 2000 (Netherlands); Biesiadka & Kurzątkowska, 2003 (Byelorussia); Brooke & Nau, 2003 (Great Britain); Coulianos, 2003 (Estonia); A. Gogala, 2003 (Slovenia); Cuppen & Nelson, 2007 (Ireland); Fent et al., 2011 (European Turkey); Belevich & Yurchenko, 2012 (Russia: WS).