Species that contain: Megalechis and thoracata [ 8 ] records

exaratus, Callichthys Müller [J.] & Troschel [F. H.] 1849:630 [Reisen in Britisch-Guiana; ref. 3072] Guyana. Syntypes: ?ZMB 3150 (1). Type catalog: Ferraris 2007:129 [ref. 29155]. •Synonym of Megalechis personata (Ranzani 1841) -- (Reis 1997:313 [ref. 22747], Reis in Reis et al. 2003:305 [ref. 27061]). •Synonym of Megalechis thoracata (Valenciennes 1840) -- (Reis et al. 2005:678 [ref. 28320], Ferraris 2007:129 [ref. 29155]). Current status: Synonym of Megalechis thoracata (Valenciennes 1840). Callichthyidae: Callichthyinae. Habitat: freshwater.

longifilis, Callichthys Valenciennes [A.] in Cuvier & Valenciennes 1840:317 [Histoire naturelle des poissons v. 15; ref. 1008] Cayenne, French Guiana. Holotype (unique): MNHN 0000-4284. Type catalog: Bertin & Estève 1950:66-67 [ref. 19575], Ferraris 2007:129 [ref. 29155]. •Synonym of Megalechis thoracata (Valenciennes 1840) -- (Reis 1997:310 [ref. 22747], Reis in Reis et al. 2003:305 [ref. 27061], Reis et al. 2005:678 [ref. 28320], Ferraris 2007:129 [ref. 29155]). Current status: Synonym of Megalechis thoracata (Valenciennes 1840). Callichthyidae: Callichthyinae. Habitat: freshwater.

oronocoi, Hoplosternum Fowler [H. W.] 1915:229, Fig. 8 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 67; ref. 1392] La Pedrita, Caño Uracoa, Venezuela. Holotype (unique): ANSP 37895. Type catalog: Böhlke 1984:32 [ref. 13621], Ferraris 2007:129 [ref. 29155]. •Synonym of Megalechis thoracata (Valenciennes 1840) -- (Reis 1997:310 [ref. 22747], Reis in Reis et al. 2003:305 [ref. 27061]). •Synonym of Megalechis picta (Müller & Troschel 1849) -- (Reis et al. 2005:680 [ref. 28320], Ferraris 2007:129 [ref. 29155]). Current status: Synonym of Megalechis picta (Müller & Troschel 1849). Callichthyidae: Callichthyinae. Habitat: freshwater.

personatus, Callichthys Ranzani [C.] 1841:62 [Nuovi annali delle scienze naturali e rendiconto dei lavori dell'Accademia della Scienze dell'Instituto di Bologna con appendice agraria. Bologna Anno III, Tomo V; ref. 24074] Brazil. Holotype (unique): MZUB 934. Type catalog: Ferraris 2007:129 [ref. 29155]. Also appeared in more detail in Ranzani 1842:322, Pl. 24 [ref. 18607]. •Valid as Hoplosternum personatum (Ranzani 1841) -- (Britski et al. 1999:125 [ref. 24147]). •Valid as Megalechis personata (Ranzani 1841) -- (Reis 1997:313 [ref. 22747], Román-Valencia et al. 1999:60 [ref. 24926], Reis in Reis et al. 2003:305 [ref. 27061]). •Synonym of Megalechis thoracata (Valenciennes 1840) -- (Reis et al. 2005:678 [ref. 28320], Ferraris 2007:129 [ref. 29155], DoNascimiento 2016:531 [ref. 34727]). Current status: Synonym of Megalechis thoracata (Valenciennes 1840). Callichthyidae: Callichthyinae. Habitat: freshwater.

pictus, Callichthys Müller [J.] & Troschel [F. H.] 1849:630 [Reisen in Britisch-Guiana; ref. 3072] Guyana. Syntypes: ZMB 3151 (1). •Synonym of Megalechis thoracata (Valenciennes 1840) -- (Reis 1997:310 [ref. 22747], Reis in Reis et al. 2003:305 [ref. 27061], DoNascimiento 2016:531 [ref. 34727]). •Valid as Megalechis picta (Müller & Troschel 1849) -- (Reis et al. 2005:680 [ref. 28320], DoNascimiento et al. 2017:72 [ref. 35633], Urbano-Bonilla et al. 2018:77 [ref. 35773], Meza-Vargas et al. 2021:25 [ref. 39298]). Current status: Valid as Megalechis picta (Müller & Troschel 1849). Callichthyidae: Callichthyinae. Distribution: South America: east of the Andes in the Amazon, Orinoco and Essequibo river basins (Bolivia, Brazil, Colombia, Guyana, Peru and Venezuela). Habitat: freshwater.

sulcatus, Callichthys Kner [R.] 1855:110 [Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe v. 17; ref. 2629] Marabitanos, Rio Branco, Brazil. Lectotype: NMW 47755 [as 4775 on p. 312]. Paralectotypes: NMW 47748 (1), 47756 (1), 47760 (1), 47767 (2), 47771 (1). Type catalog: Ferraris 2007:129 [ref. 29155]. Appeared first as name only in Kner 1854:141 [separate p. 6] [ref. 18262]. Lectotype selected by Reis 1997:311, 313 [ref. 22747]. •Synonym of Megalechis thoracata (Valenciennes 1840) -- (Reis 1997:310 [ref. 22747], Reis in Reis et al. 2003:305 [ref. 27061]). •Synonym of Megalechis picta (Müller & Troschel 1849) -- (Reis et al. 2005:680 [ref. 28320], Ferraris 2007:129 [ref. 29155]). Current status: Synonym of Megalechis picta (Müller & Troschel 1849). Callichthyidae: Callichthyinae. Habitat: freshwater.

surinamensis, Hoplosternum thoracatum Hoedeman [J. J.] 1952:5 [Beaufortia v. 1 (no. 12); ref. 12773] Suriname. Holotype: ZMA 100292. Paratypes: ZMA 100293 (2), 100295 (2), 100297-98 (1, 1), 100299 (orig. 6, now 5), 100300-01 (1, 1). Type catalog: Nijssen et al. 1982:54 [ref. 19236]. •Synonym of Hoplosternum thoracatum (Valenciennes 1840), but a valid subspecies as described -- (Burgess 1989:364 [ref. 12860]). •Synonym of Megalechis personata (Ranzani 1841) -- (Reis 1997:313 [ref. 22747], Reis in Reis et al. 2003:305 [ref. 27061]). •Synonym of Megalechis thoracata (Valenciennes 1840) -- (Reis et al. 2005:678 [ref. 28320]). Current status: Synonym of Megalechis thoracata (Valenciennes 1840). Callichthyidae: Callichthyinae. Habitat: freshwater.

thoracatus, Callichthys Valenciennes [A.] in Cuvier & Valenciennes 1840:309, Pl. 443 [Histoire naturelle des poissons v. 15; ref. 1008] Mana River, French Guiana. Holotype (unique): MNHN 0000-4266. Type catalog: Bertin & Estève 1950:65 [ref. 19575], Ferraris 2007:129 [ref. 29155]. •Mention -- (Malabarba 1989:148 [ref. 14217]). •Valid as Hoplosternum thoracatum (Valenciennes 1840) -- (Ovchynnyk 1967:37 [ref. 37559], Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:364 [ref. 12860], de Oliveira & de Moraes Junior 1997:2 [ref. 23461], Galvis et al. 1997:78 [ref. 23651], Torelli et al. 1997:70 [ref. 24612]). •Valid as Megalechis thoracata (Valenciennes 1840) -- (Reis 1997:310 [ref. 22747], Román-Valencia et al. 1999:60 [ref. 24926], Le Bail et al. 2000:182 [ref. 24549], Lasso et al. 2001:98 [ref. 25928], Camargo & Isaac 2001:145 [ref. 27639], Reis in Reis et al. 2003:305 [ref. 27061], Reis et al. 2005:678 [ref. 28320], Ferraris 2007:129 [ref. 29155], Phillip et al. 2013:19 [ref. 32896], Barriga Salazar 2014:111 [ref. 35745], Sarmiento et al. 2014:150, 190 [ref. 35004], DoNascimiento 2016:531 [ref. 34727], Melo et al. 2016:134 [ref. 34701], DoNascimiento et al. 2017:72 [ref. 35633], Meza-Vargas et al. 2021:25 [ref. 39298], Koerber et al. 2022:47 [ref. 39235], Gurgel-Lourenço et al. 2023:75 [ref. 41056], Vieira et al. 2023:20 [ref. 40759]). Current status: Valid as Megalechis thoracata (Valenciennes 1840). Callichthyidae: Callichthyinae. Distribution: South America: Amazon, Orinoco and Paraguay River basins, and coastal rivers of the Guianas and northern Brazil (Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname, Trinidad and Tobago, and Venezuela). Habitat: freshwater.