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Data · collection · 2013

Glanidium botocudo, a new species from the rio Doce and rio Mucuri, Minas Gerais, Brazil (Siluriformes: Auchenipteridae) with comments on taxonomic position of Glanidium bockmanni Sarmento-Soares & Buckup

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Description

This dataset contains the digitized treatments in Plazi based on the original journal article Sarmento-Soares, Luisa Maria, Martins-Pinheiro, Ronaldo Fernando (2013): Glanidium botocudo, a new species from the rio Doce and rio Mucuri, Minas Gerais, Brazil (Siluriformes: Auchenipteridae) with comments on taxonomic position of Glanidium bockmanni Sarmento-Soares & Buckup. Neotropical Ichthyology 11 (2): 265-274, DOI: 10.1590/S1679-62252013000200004, URL: doi.org/10.1590/S1679-62252013000200004 Glanidium botocudo, new species, is described from the tributaries to the upper rio Doce and Mucuri, eastern Minas Gerais State, Brazil.

It represents the northernmost record of a centromochlin catfish from the coastal rivers of the Northeastern Atlantic Forest. Glanidium botocudo is readily distinguished from its congeners, except Glanidium albescens, by the whitish grey body coloration with evenly spaced small dark brown dots. The new species has a long sharpened ventral process on the urohyal, an uncommon condition among congeners, and the lowest vertebral count among the large-sized Glanidium, 36-37.

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It differs from Glanidium albescens by proportional measurements and higher number of ribs. Glanidium botocudo and Glanidium albescens are probably sister species, exhibiting similar morphological features and a complimentary distribution pattern, associated to an allopatric distribution pattern. Glanidium bockmanni is transferred to the genus Centromochlus.

Glanidium botocudo, espécie nova, é descrita para tributários do alto rio Doce e rio Mucuri, leste de Minas Gerais, Brasil. Representa o registro mais ao norte de um bagre centromoclíneo nos rios do Nordeste da Mata Atlântica. Glanidium botocudo é prontamente distinguido de todos seus congêneres, exceto Glanidium albescens, pelo colorido cinza-esbranquiçado do corpo com máculas castanho-escuras regularmente espaçadas.

A espécie nova apresenta processo ventral do uro-hial longo e afilado, uma condição incomum entre os congêneres, e ainda a menor contagem vertebral entre os Glanidium de grande porte, 36-37. Diferencia-se de Glanidium albescens por proporções corporais e maior número de costelas. Glanidium botocudo e Glanidium albescens são possivelmente espécies irmãs, apresentando características morfológicas similares e padrões de distribuição complementar, associados a um padrão de distribuição alopátrica.

Glanidium bockmanni é transferido para o gênero Centromochlus.

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Evolutionary biology 69%
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