Fig 1.
Tometes siderocarajensis sp. nov. from Tocantins-Araguaia River Basin, (a) MPEG 33922, holotype photographed alive, male, 338.0 mm SL; (b) MZUSP 117052, paratype, preserved specimen, male, 341.3 mm SL.
Fig 2.
Ventral view of pelvic fins: Tometes siderocarajensis sp. nov. (a) MPEG 33925, paratype, male, 332.0 mm SL, and (b) GEA 1944, paratype, female, 200.3 mm SL. Tometes ancylorhynchus, (c) GEA 1955, female, 158.5 mm SL. Tometes lebaili, (d) MNHN 1993‒3452, female, 251.0 mm SL. Tometes trilobatus, (e) MNHN 1998–0099, female, 248.0 mm SL.
Fig 3.
Premaxilla of the Tometes siderocarajensis sp. nov., GEA 1945, female, 280.0 mm SL, (a) lateral view, (b) internal view. 1‒5: Labial premaxillary row; 1’‒2’: Lingual premaxillary row; ap: Ascending process of premaxilla; lp: Lateral process of premaxilla; d: Dimple of articulation with anterodorsal portion of maxillary; gap: lateral space between 1 and 2.
Fig 4.
Tometes siderocarajensis, paratypes, (a) INPA 52811, female, 227.3 mm SL, (b) ZUEC 12598, female, 328.0 mm SL. Preserved specimens.
Table 1.
Morphometric data for Tometes siderocarajensis sp. nov.
Range of measurements includes the holotype (MPEG 33922). Hol, holotype; n, number of specimens; SD, standard deviation.
Fig 5.
Neighbor-joining (NJ) tree of 28 mitochondrial cytochrome c oxidase subunit I gene sequences from seven Tometes species using uncorrected p-distance, showing the correct discrimination by distance genetic approach of the all species.
Bootstrap values based on 1000 replicates are indicated at the branches.
Fig 6.
Maximum Likelihood tree inferred in RAxML using the concatenated data matrix of two mitochondrial genes (COI and Control Region), showing phylogenetic relationships within the genus Tometes genus.
The numbers above branches are bootstrap probabilities > 50%. Myloplus schomburgkii and Myloplus rubripinnis were used as outgroups.
Fig 7.
Itacaiúnas River, Pará State, at Mosaic of Conservation Units of Serra dos Carajás, type locality of Tometes siderocarajensis.
Fig 8.
Distribution map of Tometes species.
Tometes ancylorhynchus (white squares), T. kranponhah (blue pentagon), T. makue (purple triangle), T. camunani (black circle), T. lebaili (green circle), and T. trilobatus (yellow diamond). Tometes siderocarajensis (stars); orange star represents the type locality, black star the record before Tucuruí hydroelectric reservoir, and red stars the remaining localities. MCU: Mosaic of Conservation Units.
Fig 9.
Teeth of Tometes trilobatus, (a) MNHN A.8650, lectotype, male, 337.3 mm SL, ventral view of premaxilla, (b) MNHN A.8649, paralectotype, female, 370.8 mm SL, lateral view. 1‒2: first and second teeth of labial premaxillary row; 4‒5: fourth and fifth teeth of lingual premaxillary row.