Pseudecheneis Blyth

Heok Hee Ng & David R. Edds, 2005, Two new species of Pseudecheneis, rheophilic catfishes (Teleostei: Sisoridae) from Nepal., Zootaxa 1047, pp. 1-19 : 1-2

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Pseudecheneis Blyth


[[ Pseudecheneis Blyth View in CoL View at ENA   ZBK ]]

Rheophilic catfishes of the sisorid genus Pseudecheneis Blyth, 1860   ZBK occur in the headwaters of major river drainages throughout South and Southeast Asia. A member of the Glyptosterninae (a group distributed from the Caucasus to China), Pseudecheneis   ZBK is easily diagnosed from other glyptosternines by a thoracic adhesive apparatus consisting of a series of transverse ridges (laminae) separated by grooves (sulcae) (de Pinna, 1996; Roberts, 1998), an adaptation to life in fast-flowing waters. Five species of Pseudecheneis   ZBK are considered valid here, viz. P. sulcata (M’Clelland, 1842) , P. paviei Vaillant, 1904   ZBK , P. immaculata Chu, 1982 , P. sulcatoides Zhou & Chu, 1992   ZBK , and P. sympelvica Roberts, 1998 . Pseudecheneis sulcata is known from the Ganges, Brahmaputra, Salween and Irrawaddy River drainages, P. paviei   ZBK from the Red River drainage, and P. immaculata , P. sulcatoides   ZBK and P. sympelvica from the Mekong River drainage.

While comparing material identified as Pseudecheneis sulcata from the Ganges River drainage in Nepal (collected by DRE) and the Brahmaputra River drainage in India (collected by HHN) for a phylogenetic study of the Sisoridae, differences were observed that suggested the material from Nepal belongs to two undescribed species, which are described below.









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