Species that contain: Sternopygus and macrurus [ 6 ] records

brasiliensis, Hildatia Fernández-Yépez [A.] 1968:[2], Pl. 1 (unnumb.) [Evencias No. 20; ref. 7318] Sarapo, Piauhy, Brazil. Holotype (unique): MCZ 9461. Type catalog: Ferraris et al. 2017:[35] [ref. 35236]. On second unnumbered page. •Synonym of Sternopygus macrurus (Bloch & Schneider 1801) -- (Mago-Leccia 1994:23 [ref. 21320], Albert & Fink 1996:89 [ref. 22024], Albert in Reis et al. 2003:489 [ref. 27061], Crampton et al. 2004:249 [ref. 27652], Hulen et al. 2005:412 [ref. 28485], Mirande & Koerber 2015:47 [ref. 35117], Ferraris et al. 2017:[35] [ref. 35236], Koerber et al. 2017:68 [ref. 35267]). Current status: Synonym of Sternopygus macrurus (Bloch & Schneider 1801). Sternopygidae: Sternopyginae. Habitat: freshwater.

caerulescens, Gymnotus carapo var. Walbaum [J. J.] 1792:164 [Petri Artedi sueci genera piscium Part 3; ref. 4572] No locality stated. No types known. •Synonym of Sternopygus macrurus (Bloch & Schneider 1801) -- (P. Parenti, pers. comm.). Nomen Oblitum. Current status: Synonym of Sternopygus macrurus (Bloch & Schneider 1801). Sternopygidae: Sternopyginae. Habitat: freshwater.

macrurus, Gymnotus Bloch [M. E.] & Schneider [J. G.] 1801:522 [M. E. Blochii, Systema Ichthyologiae; ref. 471] Brazil. Syntype: ZMB 8701 (1, stuffed). Type catalog: Paepke 1999:144 [ref. 24282], Ferraris et al. 2017:[35] [ref. 35236]. As Carapus macrourus in Cuvier 1816:237 [ref. 993], 1829:357 [ref. 995] and Müller & Troschel 1848:640 [ref. 3072]. •Valid as Sternopygus macrurus (Bloch & Schneider 1801) -- (Ovchynnyk 1967:33 [ref. 37559], Ortega & Vari 1986:13 [ref. 9708], Mago-Leccia 1994:23 [ref. 21320], Albert & Fink 1996:89 [ref. 22024], Planquette et al. 1996:388 [ref. 22818], Galvis et al. 1997:102 [ref. 23651], Britski et al. 1999:87 [ref. 24147], Keith & Meunier 2000:401 [ref. 25160], Lasso et al. 2001:100 [ref. 25928], Albert in Reis et al. 2003:489 [ref. 27061], López et al. 2003:66 [ref. 27366], Crampton et al. 2004:248 [ref. 27652], Crampton et al. 2004:124 [ref. 27764], Bertaco & Cardoso 2004:129 [ref. 28109], Menni 2004:85 [ref. 28131], Hulen et al. 2005:412 [ref. 28485], Meunier et al. 2011:48 [ref. 31379], Barriga Salazar 2014:116 [ref. 35745], Ramos et al. 2014:4 [ref. 35321], Sarmiento et al. 2014:112, 188 [ref. 35004], Jiménez-Prado et al. 2015:276 [ref. 34894], Mirande & Koerber 2015:47 [ref. 35117], Bertaco et al. 2016:422 [ref. 34561], DoNascimiento et al. 2017:67 [ref. 35633], Ferraris et al. 2017:[35] [ref. 35236], Koerber et al. 2017:68 [ref. 35267], Marceniuk et al. 2017:39 [ref. 35324], Urbano-Bonilla et al. 2018:72 [ref. 35773], Brosse et al. 2019:134 [ref. 38320], Dickens 2019:169 [ref. 37135], Ochoa et al. 2020:64 [ref. 37781], Reis et al. 2020:464 [ref. 38364], Silva et al. 2020:9 [ref. 37809], Meza-Vargas et al. 2021:21 [ref. 39298], Borstein et al. 2022:16 [ref. 39507], Koerber et al. 2022:43 [ref. 39235], Lasso in Lasso & Morales-Betancourt 2022:124 [ref. 40783], Torgersen & Albert 2022:724 [ref. 39802], Torgersen et al. 2023:24 [ref. 40151], Torgersen et al. 2023:784 [ref. 40692], Vieira et al. 2023:19 [ref. 40759]). Current status: Valid as Sternopygus macrurus (Bloch & Schneider 1801). Sternopygidae: Sternopyginae. Distribution: Widespread in South America: Argentina, Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Paraguay, Peru, Suriname and Venezuela. Habitat: freshwater.

marcgravii, Sternopygus Reinhardt [J. T.] 1852:146 [Videnskabelige Meddelelser fra den Naturhistoriske Forening i Kjøbenhavn, Aaret 1852; ref. 18619] Rio das Velhas, Rio São Francisco, Brazil. Syntypes: BMNH 1868.7.8.1 (1); ZMUC P2512 (1) [formerly ZMUC 7], P2515 (1) [formerly ZMUC 16]. Type catalog: Nielsen 1974:48 [ref. 9588] as marcgravi, Ferraris et al. 2017:[35] [ref. 35236]. •Synonym of Sternopygus macrurus (Bloch & Schneider 1801) -- (Mago-Leccia 1994:23 [ref. 21320], Albert & Fink 1996:89 [ref. 22024], Albert in Reis et al. 2003:489 [ref. 27061], Crampton et al. 2004:248 [ref. 27652], Hulen et al. 2005:412 [ref. 28485], Mirande & Koerber 2015:47 [ref. 35117], Ferraris et al. 2017:[35] [ref. 35236], Koerber et al. 2017:68 [ref. 35267]). Current status: Synonym of Sternopygus macrurus (Bloch & Schneider 1801). Sternopygidae: Sternopyginae. Habitat: freshwater.

obtusirostris, Sternopygus Steindachner [F.] 1881:143 [43], Pl. 2 (fig. 3) [Denkschriften der Kaiserlichen Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftliche Classe. v. 43; ref. 14290] Teffé, Lake Alexo, Mancapuru, Rio Puty and Rio Madeira, Brazil. Syntypes: (several) ?MCZ 9413 (1) Teffe, ?9425 (1) Rio Maues, ?9453 (1) Lago Alexo; NMW 64977-78 (1, 1), 65011-12 (1, 2), 65342 (1). Type catalog: Ferraris et al. 2017:[35] [ref. 35236]. On p. 43 of separate. •Synonym of Sternopygus macrurus (Bloch & Schneider 1801) -- (Albert & Fink 1996:89 [ref. 22024], Crampton et al. 2004:249 [ref. 27652]). •Valid as Sternopygus obtusirostris Steindachner 1881 -- (Mago-Leccia 1994:23 [ref. 21320], Albert in Reis et al. 2003:489 [ref. 27061], Crampton et al. 2004:122 [ref. 27764], Hulen et al. 2005:412 [ref. 28485], Ferraris et al. 2017:[35] [ref. 35236], Torgersen et al. 2023:24 [ref. 40151]). Current status: Valid as Sternopygus obtusirostris Steindachner 1881. Sternopygidae: Sternopyginae. Distribution: South America: main stream of Amazon River and lower Negro River basin, Brazil. Habitat: freshwater.

sanguinolentus, Carapus Castelnau [F. L.] 1855:85, Pl. 46 (fig. 1) [Animaux nouveaux or rares v. 2; ref. 766] Río Urubamba or upper Río Ucayali, Peru. Holotype (unique): MNHN 0000-3971. Type catalog: Ferraris et al. 2017:[35] [ref. 35236]. •Questionably a synonym of Sternopygus macrurus (Bloch & Schneider 1801) -- (Mago-Leccia 1994:23 [ref. 21320], Albert in Reis et al. 2003:489 [ref. 27061], Mirande & Koerber 2015:47 [ref. 35117]). •Synonym of Sternopygus macrurus (Bloch & Schneider 1801) -- (Albert & Fink 1996:89 [ref. 22024], Crampton et al. 2004:249 [ref. 27652], Hulen et al. 2005:412 [ref. 28485], Ferraris et al. 2017:[35] [ref. 35236], Koerber et al. 2017:68 [ref. 35267] with question). Current status: Synonym of Sternopygus macrurus (Bloch & Schneider 1801). Sternopygidae: Sternopyginae. Habitat: freshwater.