| Registro completo |
| Provedor de dados: |
Neotropical Ichthyology
|
| País: |
Brazil
|
| Título: |
New species of the Corumbataia cuestae group (Siluriformes: Loricariidae) from the Rio Tocantins basin, with comments on its phylogenetic relationships
|
| Autores: |
Thimotheo,Mateus Giovanni Rocha
Benine,Ricardo Cardoso
Oliveira,Claudio
Silva,Gabriel de Souza da Costa e
|
| Data: |
2020-01-01
|
| Ano: |
2020
|
| Palavras-chave: |
Cytochrome C Oxidase
Diversity
Freshwater fishes
Hypoptopomatinae
Central Brazil
|
| Resumo: |
Abstract A new species of Corumbataia is described from Rio Maranhão, Rio Tocantins basin, central Brazil. The new species is distinguished from all congeners by the presence of a small, naked area on snout tip; by having the abdomen covered with small platelets forming a shield which reaches the lateral mid-ventral plates; by the anterior profile of the head rounded in dorsal view; by the lower lip not reaching the transversal line of the pectoral girdle; and by the presence of 28 or 29 vertebrae. High genetic divergence in mitochondrial cytochrome c oxidase subunit I (COI) further supports the validity of this new species. Our phylogenetic analysis shows a derived subclade in Corumbataia, herein named as the Corumbataia cuestae group, composed of the new species plus C. cuestae, C. tocantinensis, C. britskii, C. liliai, and C. lucianoi. This group is defined by having a conspicuous crest of hypertrophied odontodes on head; absence of the adipose fin or a single series of platelets at adipose-fin position; and anastomosis of the infraorbital and otic sensory canals over the pterotic-supracleithrum. Here we also restrict the distribution of C. tocantinensis to the Rio Araguaia basin.
|
| Tipo: |
Info:eu-repo/semantics/article
|
| Idioma: |
Inglês
|
| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000400207
|
| Editor: |
Sociedade Brasileira de Ictiologia
|
| Relação: |
10.1590/1982-0224-2020-0060
|
| Formato: |
text/html
|
| Fonte: |
Neotropical Ichthyology v.18 n.4 2020
|
| Direitos: |
info:eu-repo/semantics/openAccess
|
