Vertebrate Zoology 64(1): 3-8, doi:

Re-description of Trichomycterus cubataonis BIZERRIL, 1994 (Siluriformes: Trichomycteridae) from the Cubat\xc3\xa3o river basin, southern Brazil

Axel M. Katz, Maria Anaïs Barbosa

Corresponding author: Maria Barbosa ( anaisbarbosa@yahoo.com.br )

This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Citation: Katz AM, Barbosa MA (2014) Re-description of Trichomycterus cubataonis BIZERRIL, 1994 (Siluriformes: Trichomycteridae) from the Cubat\xc3\xa3o river basin, southern Brazil. Vertebrate Zoology 64(1): 3-8

Abstract

Trichomycterus cubataonis, from the Cubatão river, southern Brazil, is re-described and revalidated. It is hypothesized as closely related to T. diabolus, T. itatiayae, T. maculosus and T. nigroautarus based on the presence of a broad metapterygoid, which is wider than deeper. Trichomycterus cubataonis differs from the above four species by the number of pectoral, dorsal, and anal-fins rays, origin of anal fin related to the dorsal-fin base, insertion of pelvic-fin related to the vertebrae, origin of dorsal- and anal fins related to the vertebrae, number of dorsal and ventral procurrent rays of caudal fin, number of odontodes of the opercular and interopercular patch, length, depth and width of the head, and eye size. Moreover, T. cubataonis differs from T. zonatus mainly by the insertion of pelvic-fin related to the vertebrae, origin of dorsal- and anal fins related to the vertebrae, number of anal fin rays, and the position of the anal fin related to the dorsal-fin base. Therefore, T. cubataonis should be considered a valid species.

Keywords

Pencil catfish, Santa Catarina, Atlantic forest, Neotropical, trichomycterinae, taxonomy.