Arrenurus quadrituberculatus K. Viets, 1937

Material examined— Surinam. 1/1/0, roadside pond along Afobakaweg, 5°36.266 N 55°05.988 W, alt. 13 m asl, 19-xi-2019.

Distribution — Known from Brazil (K. Viets 1937, 1954a), Paraguay (Lundblad 1938, 1944, as A. expansiformis Lundblad, 1938), Surinam (K. Viets 1954a) and Argentina (Rosso de Ferradás 1977).