Species that contain: Psectrogaster and curviventris [ 3 ] records

australis, Psectrogaster rhomboides Risso [F. J. J.] & Sánchez [E. L.] 1964:6, Pl. 1 [Notas del Museo de Ciencias Naturales del Chaco v. 1 (no. 2); ref. 21158] Resistencia, Argentina. Holotype: MCNCHACO 37/60. Paratypes: MCNCHACO 33-36/60 (4). •Synonym of Psectrogaster curviventris Eigenmann & Kennedy 1903 -- (Vari 1989:27 [ref. 13548], Vari in Reis et al. 2003:58 [ref. 27061], Mirande & Koerber 2015:12 [ref. 35117], Koerber et al. 2017:15 [ref. 35267]). Current status: Synonym of Psectrogaster curviventris Eigenmann & Kennedy 1903. Curimatidae. Habitat: freshwater.

curviventris, Psectrogaster Eigenmann [C. H.] & Kennedy [C. H.] 1903:509 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 55; ref. 1260] Asuncion, Río Paraguay, Paraguay. Holotype: CAS 57145 [ex IU 9919]. Paratypes: (7) AMNH 1228 [ex IU 9936] (1), 1455 [ex IU 9937] (1); CAS 57146 [ex IU 9918 & 9920] (2); FMNH 52576 [ex IU 9921] (1); ZMB 16935-37 (1, 1, 2). Type catalog: Ibarra & Stewart 1987:70 [ref. 12367]. •Valid as Psectrogaster curviventris Eigenmann & Kennedy 1903 -- (Vari 1989:27 [ref. 13548], Gómez & Chebez 1996:55 [ref. 23791], Britski et al. 1999:74 [ref. 24147], Liotta et al. 2001:153 [ref. 39259], Vari in Reis et al. 2003:58 [ref. 27061], López et al. 2003:12 [ref. 27366], Menni 2004:72 [ref. 28131], Sarmiento et al. 2014:64, 186 [ref. 35004], Mirande & Koerber 2015:12 [ref. 35117], Koerber et al. 2017:15 [ref. 35267], Careaga et al. 2020:76 [ref. 37774], Loureiro et al. 2023:45 [ref. 40506] as Psectrogstaster curviventris). Current status: Valid as Psectrogaster curviventris Eigenmann & Kennedy 1903. Curimatidae. Distribution: South America: Paraguay and southern portions of Madeira River basins (Paraguay, Bolivia, Uruguay). Habitat: freshwater.

pearsoni, Curimata Myers [G. S.] 1929:621 [Annals and Magazine of Natural History (Series 10) v. 3 (no. 18); ref. 3102] Cachuela Esperanza, Río Beni, Bolivia. Holotype (unique): CAS 57147 [ex IU 17282]. •Status uncertain, genus Psectrogaster -- (Vari 1989:30 [ref. 13548]). •Synonym of Psectrogaster curviventris Eigenmann & Kennedy 1903 -- (Vari in Reis et al. 2003:58 [ref. 27061], Sarmiento et al. 2014:64 [ref. 35004], Mirande & Koerber 2015:12 [ref. 35117], Koerber et al. 2017:15 [ref. 35267]). Current status: Synonym of Psectrogaster curviventris Eigenmann & Kennedy 1903. Curimatidae. Habitat: freshwater.