Journal Article
A new species of Copionodon lacking a free orbital rim (Siluriformes: Trichomycteridae)
de Pinna, M., Burger, R. and Zanata, A.M.
Record Number:
4150
Year:
2018
Journal:
Neotropical Ichthyology
Pages:
e170146: [1-9]
Volume:
16
Abstract:
A new species of the copionodontine genus Copionodon is described from the upper reaches of a tributary to the rio Paraguaçu in the Diamantina Plateau, Bahia State, northeastern Brazil. This species represents the northernmost occurrence of the subfamily yet known. The new species can be readily recognized by its large eye without a free orbital rim. Other characters such as the entirely cartilaginous second hypobranchial, and the uniformly broad irregular midlateral dark band further diagnose the new taxon. Its particular combination of characters is superficially intermediate between Copionodon
and Glaphyropoma. Detailed analysis, however, indicates that it forms a monophyletic group with species of Copionodon and therefore it should be included in that genus.
Key-words. Chapada Diamantina, Endemicity, New taxon, Rio Paraguaçu, Systematics, Taxonomy.
Times Cited:
2
Relevent Species:
Related Records:
de Pinna, M.C.C. (1992)
A new subfamily of Trichomycteridae (Teleostei, Siluriformes), lower locarioid relationships and a discussion on the impact of additional taxa for phylogenetic analysis
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