Species that contain: Mylossoma and duriventre [ 8 ] records

albiscopus, Myletes Cope [E. D.] 1872:267, Pl. 12 (fig. 1) [Proceedings of the Academy of Natural Sciences of Philadelphia v. 23; ref. 921] Ambyiacu River, Peru. Lectotype: ANSP 8021. Paralectotypes: ANSP 8014-20 (7), 8022 (1). Type catalog: Böhlke 1984:42 [ref. 13621] as holotype and paratypes. Lectotype established by Fowler 1907:475 [ref. 1374]. Appeared first as name only in Cope 1871:55 [ref. 19538]. •Synonym of Mylossoma duriventre (Cuvier 1818) -- (Taphorn 1992:286 [ref. 23654], 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 albiscopum (Cope 1872) -- (Mateussi et al. 2018:280 [ref. 35820], Valdiviezo-Rivero et al. 2020:318 [ref. 37420], Meza-Vargas et al. 2021:17 [ref. 39298], Ota et al. 2024:416 [ref. 40817]). Current status: Valid as Mylossoma albiscopum (Cope 1872). Serrasalmidae: Colossomatinae. Distribution: South America: widespread across the Amazon and Orinoco basins (Ecuador, Peru, Bolivia, Brazil, Colombia and Venezuela). Habitat: freshwater.

argenteum, Mylossoma Ahl [E.] 1928:192, Fig. [Das Aquarium: eine Zeitschrift mit Bildern für Liebhaber, Schulen und Naturfreunde, Berlin 1928 (no. 11); ref. 20506] Amazon River. Syntypes: ZMB 20854 (2). Types mentioned: Paepke 1995:92 [ref. 21847]. Appeared first in Ahl 1928 as above, then in Ahl 1929:273 [ref. 15881]. •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]). •Synonym of Mylossoma albiscopum (Cope 1872) -- (Mateussi et al. 2018:280 [ref. 35820], Ota et al. 2024:416 [ref. 40817]). Current status: Synonym of Mylossoma albiscopum (Cope 1872). Serrasalmidae: Colossomatinae. Habitat: freshwater.

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.

ocellatum, Mylosoma Eigenmann [C. H.] 1915:265 [Annals of the Carnegie Museum v. 9 (nos 3-4); ref. 1232] Río Confuso at Villa Hays, Paraguay. Holotype: FMNH 56816 [ex CM 5629]. Paratypes: (19) FMNH 15007-08 (1, 1), 56817 (13). Type catalog: Henn 1928:69 [ref. 12305], Ibarra & Stewart 1987:58 [ref. 12367]. Originally appeared as new species with doubt. Original genus should have been Mylossoma. •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.

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.

paraguayensis, Mylosomma Norman [J. R.] 1929:814, Fig. 19 [Proceedings of the Zoological Society of London [v. 98] (pt 4) (no. 52)(art. 30) (for 1928); ref. 3218] Río Paraguay. Syntypes: BMNH 1895.5.17.254-255 (2) Río Paraguay, 1910.5.26.46 (1) San Salvador, 1910.5.26.47-48 (2) Puerto Asir. Original genus should have been Mylossoma. •Valid as Mylosomma paraguayensis Norman 1929 -- (Sverlij et al. 1998:25 [ref. 27632] as Norman 1929, Britski et al. 1999:60 [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.

trigintaradiatus, Salmo Larrañaga [D. A.] 1923:388 [Escritos de Don Dámaso Antonio Larrañaga v. 2; ref. 22561] Uruguay. Originally as Salmo 30-radiatus. Also appeared in Devincenzi 1925:314, 322 [ref. 20322]; Devincenzi treated as a synonym of Myletes orbignyanus Valenciennes 1850. •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]). •Species inquirenda in Serrasalmidae -- (Ota et al. 2024:432 [ref. 40817]). Serrasalmidae. 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.