Trichomycterus payaya, new catfish (Siluriformes: Trichomycteridae) from headwaters of rio Itapicuru, Bahia, Brazil

Abstract

1Trichomycterus payaya, new species, is described from tributaries to the upper rio Itapicuru basin, northern Bahia State, Brazil. The new species is distinguished from congeners by having the head rounded anteriorly in dorsal view and slightly depressed in lateral view, supraorbital pores s6 paired, opening laterally on the supraorbital sensory branch, not emerging from an epiphyseal branch, lateral process of the urohyal distally sharp and with pointed tip, interopercular patch of odontodes longer than deep, with 21-26 odontodes, small number of pleural ribs (5-6 ribs), and dorsal fin in a posterior position. This is the first record of a Trichomycterus from the semiarid region of northeastern Brazil.Trichomycterus payaya, espécie nova, é descrita de tributários do alto rio Itapicuru, norte do Estado da Bahia, Brasil. A espécie nova distingue-se dos congêneres por ter cabeça arredondada anteriormente em vista dorsal e ligeiramente deprimida em vista lateral, poros supraorbitais s6 pares, abrindo-se lateralmente no ramo sensorial supraorbital, não emergindo a partir de um ramo epifiseal, processo lateral do urohial afilado distalmente e com extremidades pontiagudas, placa de odontódeos interoperculares mais longa que larga, com 21-26 odontódeos, baixo número de costelas pleurais (5-6 costelas) e nadadeira dorsal em posição posterior. Este éo primeiro registro de um Trichomycterus para o semi-árido do nordeste do Brasil.

A new troglomorphic species of Trichomycterus (Siluriformes: Trichomycteridae) from north‐eastern Colombia, with proposal of a new Trichomycterus subclade and remarks on some nominal species from Colombia

“…5, p. 66; T. megantoni Fernández & Quispe Chuquihuamaní in Fernández & Quispe Chuquihuamaní, : fig. 3, p. 53; T. payaya Sarmento‐Soares, Zanata & Martins‐Pinheiro 2011 in Sarmento‐Soares et al ., : fig. 2, p. 265; T. potschi Barbosa & Costa 2003 in Barbosa & Costa, : fig.…”

Freshwater fishes of the Bahia State, Northeastern Brazil

“…in taxonomic inventories (e.g., Sarmento-Soares et al 2009a, Cetra et al 2010, Burger et al 2011, Ramos et al 2014. Although numerous freshwater fish species from the Bahia river basins have been described in the last two decades (e.g., Bertaco & Lucena 2006, Ribeiro & Lucena 2006, Lima & Britski 2007, Benine et al 2007, Zanata & Camelier 2008, 2010, 2015, Bichuette et al 2008, Sarmento-Soares et al 2009b, Sarmento-Soares et al 2011, Ferreira et al 2014, Vari et al 2010, Bichuette & Rizzato 2012, Oliveira et al 2013, Sarmento-Soares & Martins-Pinheiro 2013, Camelier & Zanata 2014b, 2017, 2018, Mattos et al 2015, Peixoto & Wosiacki 2016, Zanata & Pitanga 2016, Zawadzki et al, 2017Barreto et al 2018, Mattos & Costa, 2018, Burger et al 2019, Lucena & Lucena 2019, ichthyological explorations continue to reveal unknown species, especially in small tributaries and in upper drainage areas. The increase in the number of species recently described from the São Francisco river basin has already been documented in the literature (see Alves et al 2011 andBarbosa et al 2017).…”

A new species of cave catfish from Brazil, Trichomycterus rubbioli sp.n., from Serra do Ramalho karstic area, São Francisco River basin, Bahia State (Silurifomes: Trichomycteridae)

“…Few Trichomycterus species have been described from river basins draining Bahia State, the majority of which from coastal rivers (Sarmento-Soares et al, 2011). Only two species are reported so far from more internal river basins: T. payaya Sarmento-Soares, Zanata & Martins-Pinheiro and T. tete Barbosa & Costa. These were also the only known species of the genus inhabiting areas of the Caatinga semi-arid region (Sarmento-Soares et al, 2011;Barbosa & Costa, 2011). The new species herein described must therefore be considered as the third record of the genus for the Caatinga, and the first one of a troglobite.…”