Gyrinus (Neogyrinus) crassus Aubé, 1838

Gyrinus crassus Aubé, 1838: 711 (orig. descr.); Gemminger & Harold 1868: 468 (catalog); Régimbart 1883b: 188, pl 6, fig 95 (descr.); 1884: 475 (record); 1903a: 8 (record); Ochs 1935a: 130 (descr.); 1948: 565 (checklist); 1960a: 181 (descr.); 1966: 442 (record); Blackwelder 1944: 81 (checklist)

Gyrinus (Neogyrinus) crassus Aubé: Ochs 1963c: 458 (n. comb.)

DISTRIBUTION: Brazil (PR, RJ, SC, SP).