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- Title
New species of Rhyacoglanis (Siluriformes: Pseudopimelodidae) from the upper rio Tocantins basin.
- Authors
Shibatta, Oscar Akio; Souza-Shibatta, Lenice
- Abstract
A new species of Rhyacoglanis from the upper rio Tocantins basin is described based on morphological and molecular data. The new species differs from the congeners by its color pattern, caudal fin shape, hypural bones fusion pattern, pectoral-fin spine shape, and barcode sequence of cytochrome oxidase subunit I (COI). In this study, two putative monophyletic groups of Rhyacoglanis are proposed based on morphology, one consisting of species with a short post-cleithral process and caudal fin with rounded lobes, Rhyacoglanis epiblepsis and R. rapppydanielae, and the other with a longer post-cleithral process and caudal fin with pointed lobes, R. annulatus, R. paranensis, R. pulcher, R. seminiger, and the new species described herein.
- Subjects
TOCANTINS (Brazil); FISH morphology; CATFISHES; CYTOCHROME oxidase; SPECIES
- Publication
Neotropical Ichthyology, 2023, Vol 21, Issue 1, p1
- ISSN
1679-6225
- Publication type
Article
- DOI
10.1590/1982-0224-2022-0075