Species that contain: Mylossoma and duriventris [ 4 ] records

duriventris, Myletes Cuvier [G.] 1818:451, Pl. 22 (fig. 2) [Mémoires du Muséum d'Histoire Naturelle, Paris v. 4; ref. 1016] Brazil. Holotype: MNHN A-9891 (dry). Type catalog: Bertin 1948:28 [ref. 19577]. For information on types see Jégu in Reis et al. 2003:187 [ref. 27061]. Apparently the correct spelling when in Mylossoma is duriventre. •Valid as Mylossoma duriventris (Cuvier 1818) -- (Ovchynnyk 1967:30 [ref. 37559], Ortega & Vari 1986:9 [ref. 9708], Taphorn 1992:286 [ref. 23654], Gómez & Chebez 1996:52 [ref. 23791], López et al. 2003:33 [ref. 27366], Menni 2004:79 [ref. 28131]). •Valid as Mylossoma duriventre (Cuvier 1818) -- (Jégu in Reis et al. 2003:187 [ref. 27061], Barriga Salazar 2014:108 [ref. 35745], Litz & Koerber 2014:9 [ref. 33622], Sarmiento et al. 2014:90, 187 [ref. 35004], Mirande & Koerber 2015:15 [ref. 35117], Nión et al. 2016:28 [ref. 35565], Koerber et al. 2017:22 [ref. 35267], DoNascimiento et al. 2017:37 [ref. 35633], Urbano-Bonilla et al. 2018:84 [ref. 35773], Mateussi et al. 2018:293 [ref. 35820], Meza-Vargas et al. 2021:17 [ref. 39298], Koerber et al. 2023:3 [ref. 40665], Loureiro et al. 2023:36 [ref. 40506], Ota et al. 2024:416 [ref. 40817]). Current status: Valid as Mylossoma duriventre (Cuvier 1818). Serrasalmidae: Colossomatinae. Distribution: South America: Paraguai, lower Paraná and Uruguai basins (Argentina, Brazil, Peru, Uruguay and Paraguay). Habitat: freshwater.

herniarius, Myletes Cope [E. D.] 1872:268, Pl. 12 (fig. 3) [Proceedings of the Academy of Natural Sciences of Philadelphia v. 23; ref. 921] Río Ambyiacu, Peru. Lectotype: ANSP 8025. Paralectotype: ANSP 7990 (1). Type catalog: Böhlke 1984:48 [ref. 13621] as hernarius. Lectotype selected by Fowler 1907:476, Fig. 56 [ref. 1374]. •Synonym of Mylossoma duriventris Cuvier 1817 -- (authors). •Synonym of Mylossoma aureum (Spix & Agassiz 1829) -- (Taphorn 1992:284 [ref. 23654], Jégu in Reis et al. 2003:187 [ref. 27061], Mateussi et al. 2018:287 [ref. 35820], Ota et al. 2024:416 [ref. 40817]). Current status: Synonym of Mylossoma aureum (Spix & Agassiz 1829). Serrasalmidae: Colossomatinae. Habitat: freshwater.

orbignyanus, Myletes Valenciennes [A.] in Cuvier & Valenciennes 1850:220 [Histoire naturelle des poissons v. 22; ref. 1014] Above Corrientes, Rio Paraná, Brazil. Lectotype: MNHN A-9863 (230 mm SL specimen, stuffed). Paralectotype: MNHN A-9863 (1, same cat.# as Lectotype). Type catalog: Bertin 1948:28 [ref. 19577]. Lectotype selected by Géry et al. 1987:444 [ref. 6001]. •Synonym of Mylossoma duriventris (Cuvier 1818), but a valid subspecies orbignyanum (Cuvier 1818) -- (Gómez & Chebez 1996:52 [ref. 23791]). •Valid as Myletes orbignyanus Valenciennes 1850 -- (Britski et al. 1999:62 [ref. 24147], López et al. 2003:34 [ref. 27366], Menni 2004:79 [ref. 28131]). •Synonym of Mylossoma duriventre (Cuvier 1818) -- (Jégu in Reis et al. 2003:187 [ref. 27061], Litz & Koerber 2014:9 [ref. 33622], Mirande & Koerber 2015:15 [ref. 35117], Koerber et al. 2017:22 [ref. 35267], Mateussi et al. 2018:293 [ref. 35820], Ota et al. 2024:417 [ref. 40817]). Current status: Synonym of Mylossoma duriventre (Cuvier 1818). Serrasalmidae: Colossomatinae. Habitat: freshwater.

unimaculatus, Metynnis Steindachner [F.] 1908:326 [Anzeiger der Kaiserlichen Akademie der Wissenschaften, Wien, Mathematisch-Naturwissenschaftliche Klasse v. 45 (no. 17) (for 2 July 1908); ref. 18805] Lake at Rio Medonho, tributary of Rio Parnahyba north of Santa Filomena, Brazil [type locality incorrect, Mateussi et al. 2018:303 [ref. 35820], probably the lower Rio Tocantins basin]. Syntypes: (several) NMW 56451 (3). •Questionably a synonym of Mylossoma aureum (Spix & Agassiz 1829) -- (Taphorn 1992:285 [ref. 23654]). •Synonym of Mylossoma duriventre (Cuvier 1818) -- (Zarske & Géry 1999:188 [ref. 23984] as duriventris, Jégu in Reis et al. 2003:187 [ref. 27061], Litz & Koerber 2014:9 [ref. 33622], Mirande & Koerber 2015:15 [ref. 35117], Koerber et al. 2017:22 [ref. 35267]). •Valid as Mylossoma unimaculatum (Steindachner 1908) -- (Mateussi et al. 2018:299 [ref. 35820], Koerber et al. 2022:18 [ref. 39235], Ota et al. 2024:417 [ref. 40817]). Current status: Valid as Mylossoma unimaculatum (Steindachner 1908). Serrasalmidae: Colossomatinae. Distribution: South America: Tocantins-Araguaia system, Amazon basin (Brazil). Habitat: freshwater.