This dataset contains the digitized treatments in Plazi based on the original journal article Carvalho, Tiago Pinto, A., Pablo Lehmann, Reis, Roberto E. (2008): Gymnotocinclus anosteos, a new uniquely-plated genus and species of loricariid catfish (Teleostei: Siluriformes) from the upper rio Tocantins basin, central Brazil. Neotropical Ichthyology 6 (3): 329-338, DOI: 10.1590/S1679-62252008000300006, URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000300006&lng=en&tlng=en
Gymnotocinclus anosteos, a new genus and species, is described from a headwater stream of the upper rio Tocantins basin in central Brazil. The new taxon is distinguished from other loricariids by the extreme reduction of dermal plates, having an almost completely naked body. Three other diagnostic features are: the absence of the lateral connecting bone, absence of bifid hemal spines, and odontode tips in the last dermal plates on the caudal peduncle dorsally or anteriorly curved. These derived features are not shared with any other hypoptopomine genus and the new taxon is hypothesized to be a basal member of the subfamily. Character states proposed by previous phylogenies of the subfamily are examined in the new taxon and its relationships are discussed.
Gymnotocinclus anosteos, novo gênero e espécie, é descrito de um córrego de cabeceira da bacia do alto rio Tocantins no Brasil central. O novo táxon é distinto de outros loricarídeos pela extrema redução das placas dérmicas, apresentando o corpo quase completamente sem placas. Três outras características diagnósticas são: a ausência do osso lateral, ausência de espinhos hemais bífidos e a presença de odontódeos na última série de placas dérmicas do pedúnculo caudal dorsalmente ou anteriormente curvados. Estas características derivadas não são compartilhadas com nenhum outro gênero de Hypoptopomatinae e o novo taxon é hipotetizado como membro basal da subfamília. Os estados de caracteres propostos por filogenias anteriores da subfamília são examinados e suas relações são discutidas.
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