The identity of Pseudecheneis sulcata (M'Clelland, 1842), with descriptions of two new species of rheophilic catfish (Teleostei: Sisoridae) from Nepal and China.

This dataset contains the digitized treatments in Plazi based on the original journal article Heok Hee Ng (2006): The identity of Pseudecheneis sulcata (M'Clelland, 1842), with descriptions of two new species of rheophilic catfish (Teleostei: Sisoridae) from Nepal and China. Zootaxa 1254: 45-68, URL: http://www.zoobank.org/urn:lsid:zoobank.org:pub:D40D9055-4618-4CBA-AF28-0E621FFA7AECAbstractThe identity of Pseudecheneis sulcata is clarified in this study, and the species is redescribed. Pseudecheneis sulcata (from the Brahmaputra River drainage) can be distinguished from congeners in having a unique combination of the lack of a prominent bony spur on the anterodorsal surface of the first dorsal-fin pterygiophore, presence of a first dorsal-fin element, bifid neural spines on the complex vertebra, the neural spines of the last 2-3 preanal and first 6-7 postanal vertebrae gradually increasing in height, separate pelvic fins, a less convex snout when viewed laterally, presence of pale spots on the body, 36-39 vertebrae, 12-14 transverse laminae on the thoracic adhesive apparatus, pelvic-fin length 21.2-28.7% SL, pectoral-fin length 121.6-156.3 % HL, length of adipose-fin base 17.8-22.7% SL, length of caudal peduncle 25.0-28.3% SL, depth of caudal peduncle 4.0-5.2% SL, and eye diameter 8.8-10.6% HL. Pseudecheneis eddsi, new species, is described from tributaries of the Ganges River in Nepal. Pseudecheneis eddsi can be distinguished from congeners by a unique combination of the presence of a prominent bony spur on the anterodorsal surface of the first dorsal-fin pterygiophore, presence of a first dorsal-fin element, bifid neural spines on the complex vertebra, the neural spines of the last 2-3 preanal and first 6-7 postanal vertebrae gradually increasing in height, separate pelvic fins, gently rounded snout when viewed dorsally, presence of pale spots on the body, 36-39 vertebrae, pelvic-fin length 18.0-20.9% SL, pectoral-fin length 114.9-156.0% HL, length of adipose-fin base 19.5-24.3% SL, length of caudal peduncle 25.2-27.8% SL, depth of caudal peduncle 3.5-5.3% SL, and eye diameter 9.6-12.8% HL. Pseudecheneis stenura, new species, is also described from the Irrawaddy River drainage in southwestern China. Pseudecheneis stenura can be distinguished from congeners by a unique combination of the presence of a prominent bony spur on the anterodorsal surface of the first dorsal-fin pterygiophore, presence of a first dorsal-fin element, bifid neural spines on the complex vertebra, the neural spines of the last 2-3 preanal and first 6-7 postanal vertebrae gradually increasing in height, separate pelvic fins, presence of pale spots on the body, 38-40 vertebrae, pelvic-fin length 20.4-24.3% SL, pectoral-fin length 160.4-196.9% HL, length of adipose-fin base 18.8-23.7% SL, length of caudal peduncle 30.3-34.5% SL, depth of caudal peduncle 2.9-3.6% SL, and eye diameter 9.2-12.8% HL. A key to the species of Pseudecheneis is provided.Key words: Glyptosterninae, Irrawaddy River, Ganges River