Trichomycterus sp. B

dos Santos, Sergio Alexandre & de Britto, Marcelo Ribeiro, 2021, The ichthyofauna of a poorly known area in the middle-southern Espinhaco mountain range, state of Minas Gerais, Brazil: diagnostics and identification keys, ZooKeys 1054, pp. 25-66 : 25

Trichomycterus sp. B

Fig. 4D

Distribution.

Upper rio Paraúna, rio São Francisco basin, and upper rio Santo Antônio, rio Doce basin.

Diagnosis.

Trichomycterus sp. B differs from its congeners of the study area by having nine branchiostegal rays; high concentration of rounded dark spots on the head and sides of the trunk, dorsum, and belly, which may fuse and form small vermiculations; rounded caudal fin.

Remarks.

In this study, we refer Trichomycterus sp. B such as a putative new species from the rio Doce basin, due to differences in morphology and color pattern between this species and another with similar color pattern from Southeastern Brazil river basins such as T. brasiliensis group, T. argos , T. landinga , T. novalimensis , and T. rubiginosus .

Figures

Figure 4. Siluriformes species from the middle-southern Espinhaco mountain range, Minas Gerais state, Brazil A Bunocephalus hartti, MZUSP 064227, 44.7 B Trichomycterus melanopygius, MNRJ 47902, 85.2 mm SL C Trichomycterus sp. A, MNRJ 47901, 87.4 mm SL D Trichomycterus sp. B, MNRJ 46932, 57.0 mm SL E Callichthys callichthys, MNRJ 48501, 58.2 mm SL F Euryochus thysanos, MNRJ 47897, 74.4 mm SL G Harttia intermontana, MNRJ 48463, 42.4 mm SL H Hypostomus francisci, MZUSP 37162, 66.8 mm SL I Neoplecostomus sp. A, MNRJ 46935, 73.0 mm SL J Neoplecostomus sp. B, MNRJ 48431, 43.0 mm SL K Pareiorhaphis scutula, MNRJ 48471, 88.1 mm SL L Pareiorhaphis vetula, MNRJ 46936, 40.4 mm SL.