Corydoras, Lacepede, 1803

Ota, Renata Rúbia, Deprá, Gabriel de Carvalho, Graça, Weferson Júnio da & Pavanelli, Carla Simone, 2018, Peixes da planície de inundação do alto rio Paraná e áreas adjacentes: revised, annotated and updated, Neotropical Ichthyology 16 (2), pp. 1-111 : 63

Corydoras sp.

Fig. 19

Body deep and elliptical; greatest depth contained 3.0 and caudal peduncle depth 6.8 times in SL; head length 3.1, predorsal distance 6.5 and maxillary-barbel length 6.1 in SL; snout length 1.9, horizontal orbital diameter 3.8 and least interorbital width 3.0 in HL. Mouth inferior. Lateral line with 4 pores on upper series of plates. Dorsolateral series with 24 plates and ventrolateral series with 21 plates. Dorsal fin with II,8, pectoral with I,8, pelvic and anal fins with 6 rays. Ground color yellow to pale brown; six dark-brown spots on mid-line of flank; ventrolateral plates dark-grey posteriorly to pelvic fin; middle portion of caudal-fin base with dark-brown spot.

Maximum standard length. 31.8 mm.

Distribution. Only known from the Córrego Santa Maria, tributary of the rio Iguatemi, right bank of the upper rio Paraná.

Remarks. Only two specimens of Corydoras sp. were captured in a tributary of the rio Iguatemi, in 2008 by V. F. B. Silva and collaborators. According to L. F. C. Tencatt (oral communication, 2011) this species is apparently new to science.

Figures

Fig. 19. a. Callichthys callichthys, MZUSP 60261, 120.0 mm SL, córrego da Onça, afluente do rio Pardo, Barra do Turvo, State of São Paulo. b. Corydoras aeneus, NUP 17578, 43.1 mm SL, córrego Guaçu, tributary of the rio Abambai, Itaquirai, State of Mato Grosso do Sul. c. Corydoras sp., NUP 16185, 33.4 mm SL, córrego Santa Maria, tributary of the rio Iguatemi, Mundo Novo, State of Mato Grosso do Sul. d. Hoplosternum littorale, NUP 161, 133.4 mm SL, lagoa Mutum, Porto Rico, State of Paraná. e. Lepthoplosternum pectorale, 100.0 mm SL, uncat. f. Cetopsis gobioides, 102.4 mm SL, uncat. g. Clarias gariepinus, NUP 11900, 329.0 mm SL, rio Lopei (Pesque-Pague Big Peixes), tributary of the rio Toledo, Cascavel, State of Paraná.