Find research datasets worth reusing

FIGURE 7 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba

FIGURE 7 | Dermal denticles in the central disc of Paratrygon orinocensis. A. dorsal view of dermal denticles of IAvH-P 12448. B. dorsal view of three dermal denticles of MZUSP 117220 (paratype), juvenile male, 299 mm DW, from Apure river, made by Scanning Electron Microscopy (SEM image). C. dorsal view of one central dermal denticle of MZUSP 117220 (SEM image). D. morphology detail of a central dermal denticle of MZUSP 117220 (SEM image) in dorsal view. E. lateral-dorsal view of one central dermal denticle of MZUSP 117220 (SEM image). F. lateral-dorsal view of one central dermal denticle showing the crown (MZUSP 117220, SEM image). ccp = central coronal plate, cr = crown, lcr = lateral coronal ridge.

FIGURE 5 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba

FIGURE 5 | Lateral view of spiracles and spiracles process of Paratrygon orinocensis. A. IAvH-P 12449 (paratype). B. IAvH-P 12448 (paratype). C. IAvH-P 11939 (holotype). D. IAvH-P 11942, juvenile female, 297 mm DW, from Orinoco river. E. IAvH-P 11938, juvenile male, 242 mm DW, from Orinoco river. F. IAvH-P 11941, juvenile female, 248 mm DW, from Orinoco river.

FIGURE 6 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba

FIGURE 6 | Upper (above) and lower (below) teeth of Paratrygon orinocensis, IAvH-P 12449 (paratype). Scale bars = 5 mm.

FIGURE 4 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba

FIGURE 4 | Frontal view of eyes and spiracles of the three species of genus Paratrygon. Paratrygon orinocensis: A. IAvH-P 12449 (paratype), adult male, 573 mm DW, from Orinoco river. B. USNM 233944a (paratype). C. IAvH-P 11939 (holotype). Paratrygon parvaspina: D. IAvH-P 12447 (holotype), adult female, 450 mm DW, from Bita river. E. IAvH-P 12441 (paratype), juvenile female, 225 mm DW, from Tomo river. F. IAvH-P 12446 (paratype), juvenile male, 212 mm DW, from Tomo river. Paratrygon aiereba: G. MPEG uncatalogued, adult male, 578 mm DW, from Marajó island. H. MZUSP 14774, juvenile female, 256 mm DW, from Jutaí river. I. MUSM uncatalogued, juvenile male, 220 mm DW.

FIGURE 1 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba

FIGURE 1 | Holotype of Paratrygon orinocensis, IAvH-P 11939, adult female, 286 mm DW, from Orinoco river. A. dorsal and B. ventral views.

FIGURE 3 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba

FIGURE 3 | Paratypes of Paratrygon orinocensis. IAvH-P 11940, juvenile male, 345 mm DW, from Orinoco river. A. dorsal and B. ventral views. USNM 233944b, juvenile male, 335 mm DW, from Orinoco river. C. dorsal and D. ventral views.

FIGURE 2 in Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba

FIGURE 2 | Paratypes of Paratrygon orinocensis. IAvH-P 12448, subadult male, 421 mm DW, from Orinoco river. A. dorsal and B. ventral views. USNM 233944a, adult female, 420 mm DW, from Orinoco river. C. dorsal and D. ventral views.

FIGURE 15 in Integrative taxonomy of the black-barred disk pacus (Characiformes: Serrasalmidae), including the redescription of Myloplus schomburgkii and the description of two new species

FIGURE 15 | Maximum clade credibility tree obtained from 10,000 post-burnin MrBayes trees. Colored dots represent unique mPTP species delimitation clusters (total 48), with posterior probability for each delimitation reported in the corresponding bar plot (right). Dataset comprised 209 dereplicated COI barcodes. The Myloplus aylan samples are highlighted in green, M. sauron in orange, and M. schomburgkii in blue. Holotype of M. aylan and neotype of M. schomburgkii highlighted in bold.

FIGURE 13 in Integrative taxonomy of the black-barred disk pacus (Characiformes: Serrasalmidae), including the redescription of Myloplus schomburgkii and the description of two new species

FIGURE 13 | Geographic variation in Myloplus schomburgkii. Both from the Teles Pires River basin, immediately after capture. A. Female. B. Male. Notice the oval mark on the flank, instead of a vertical bar. Photographed by Renan Condé Pires, not preserved.

FIGURE 11 in Integrative taxonomy of the black-barred disk pacus (Characiformes: Serrasalmidae), including the redescription of Myloplus schomburgkii and the description of two new species

FIGURE 11 | Geographic variation in Myloplus schomburgkii. A. Roraima, Caracaraí municipality, rio Água Boa do Univiní. B. Tapajós River basin. Both recently collected, females, not preserved. Notice, in A, the vertical bar conspicuous across the flank, while in B the bar is conspicuous only dorsally to the lateral line.

FIGURE 12 in Integrative taxonomy of the black-barred disk pacus (Characiformes: Serrasalmidae), including the redescription of Myloplus schomburgkii and the description of two new species

FIGURE 12 | Geographic variation in Myloplus schomburgkii, 202.4 mm SL. Teles Pires River basin. Notice the oval mark on the flank, instead of a vertical bar.

FIGURE 14 in Integrative taxonomy of the black-barred disk pacus (Characiformes: Serrasalmidae), including the redescription of Myloplus schomburgkii and the description of two new species

FIGURE 14 | Illustration of a female from rio Negro basin, provided by Robert H. Schomburgk, in which Jardine in Schomburgk (1841, plate 22) based the original description of Tetragonopterus schomburgkii.

FIGURE 8 in Integrative taxonomy of the black-barred disk pacus (Characiformes: Serrasalmidae), including the redescription of Myloplus schomburgkii and the description of two new species

FIGURE 8 | Myloplus sauron, coloration immediately after capture. A. Male. Notice the faint vertical mark, common during breeding period. B. Mature female. Xingu River basin. Photo by M. H. Sabaj.

FIGURE 9 in Integrative taxonomy of the black-barred disk pacus (Characiformes: Serrasalmidae), including the redescription of Myloplus schomburgkii and the description of two new species

FIGURE 9 | Myloplus schomburgkii, INPA 60149, neotype, male, 203.9 mm SL, Brazil, Amazonas, Barcelos municipality, rio Negro.

FIGURE 10 in Integrative taxonomy of the black-barred disk pacus (Characiformes: Serrasalmidae), including the redescription of Myloplus schomburgkii and the description of two new species

FIGURE 10 | Myloplus schomburgkii, color pattern immediately after capture. A. INPA 60149, neotype, 203.9 mm SL, male, with second lobe well developed and remarkable breeding coloration.B. INPA 52507, 197.1 mm SL, female. Both from Amazonas, Barcelos municipality, rio Negro.

FIGURE 7 in Integrative taxonomy of the black-barred disk pacus (Characiformes: Serrasalmidae), including the redescription of Myloplus schomburgkii and the description of two new species

FIGURE 7 | Myloplus sauron, color pattern in life. Young specimen from Xingu River basin, specimen not preserved.

FIGURE 6 in Integrative taxonomy of the black-barred disk pacus (Characiformes: Serrasalmidae), including the redescription of Myloplus schomburgkii and the description of two new species

FIGURE 6 | Myloplus sauron, INPA 40824, holotype, male, 132.8 mm SL, Brazil, Pará, Anapu municipality, rio Xingu, downstream from the Tamaracá waterfall.

FIGURE 5 in Integrative taxonomy of the black-barred disk pacus (Characiformes: Serrasalmidae), including the redescription of Myloplus schomburgkii and the description of two new species

FIGURE 5 | Sympatric occurrence of Myloplus schomburgkii (left) and M. aylan (right) in rio Água Boa do Univini, tributary of rio Branco. Both specimens are mature males, the specimens has not being preserved.

FIGURE 4 in Integrative taxonomy of the black-barred disk pacus (Characiformes: Serrasalmidae), including the redescription of Myloplus schomburgkii and the description of two new species

FIGURE 4 | Geographic distribution of Myloplus schomburgkii (blue circles; the pink star at rio Negro basin represents the type-locality), M. sauron (red squares; the yellow star at rio Xingu basin represents the type-locality) and M. aylan (purple triangles; the black star at rio Branco basin represents the type-locality).

FIGURE 2 in Integrative taxonomy of the black-barred disk pacus (Characiformes: Serrasalmidae), including the redescription of Myloplus schomburgkii and the description of two new species

FIGURE 2 | Myloplus aylan, INPA 60150, holotype, male, 213.01 mm SL, Brazil, Roraima, Caracaraí municipality, rio Baraúna, lago do Bento.