Wednesday, October 2, 2013

[Ichthyology • 2013] Glanidium botocudo • A New Species of Catfish (Siluriformes: Auchenipteridae) from the rio Doce and rio Mucuri, Minas Gerais, Brazil with comments on taxonomic position of Glanidium bockmanni

Fig. 1 Glanidium botocudo, new species, from Minas Gerais State, Brazil
(a) holotype, MNRJ 32538, male,  b) paratype, MBML 2047, female

Glanidium botocudo 
Sarmento-Soares & Martins-Pinheiro, 2013 

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. 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

Keywords: Centromochlinae; Centromochlus; Distribution; South America; Systematics

Etymology. The specific name is a reference to the Botocudo, the generic name given to native indigenous people wearing artifacts ("botoques") on ears and lips. Those Indians were the original inhabitants of large extensions of the Floresta Atlântica (Paraíso, 1992), including the lands along the rio Mucuri valley and far west, to the rio Doce, range of the new Glanidium species. A noun in apposition.

Sarmento-Soares, L.M. & Martins-Pinheiro, R.F. 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.