diphyes, Corydoras Axenrot [T. E.] & Kullander [S. O.] 2003:258, Fig. 5 [Ichthyological Exploration of Freshwaters v. 14 (no. 3); ref. 27393] Small stream (arroyo) at Estancia María Belén, 8 kilometers from Colonel Patricio Colman, 25°40'13"S, 55°05'52"W, río Paraná drainage, Depto. Caaguazú, Paraguay. Holotype: MNHNP uncat. [ex. NRM 43483]. Paratypes: (621 specimens) MHNG 2482.23 (2); NRM 41765 (1), 41798 (15), 41826 (1), 41928 (3), 41930 (1), 42062 (18), 42094 (75), 42096 (101), and others at NRM. Type catalog: Ferraris 2007:116 [ref. 29155]. •Valid as Corydoras diphyes Axenrot & Kullander 2003 -- (Knaack 2004:108 [ref. 28306], Ferraris 2007:116 [ref. 29155], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Koerber et al. 2017:57 [ref. 35267]). •Valid as Hoplisoma diphyes (Axenrot & Kullander 2003) -- (Dias et al. 2024:26 [ref. 41219], Koerber 2024:5 [ref. 41228]). Current status: Valid as Hoplisoma diphyes (Axenrot & Kullander 2003). Callichthyidae: Corydoradinae. Distribution: South America: Monday and Acaray River drainages, Paraná River basin (Paraguay). Habitat: freshwater.