Abstract
The genus Oreoglanis is reported for the first time from India. Oreoglanis majusculus, new species, from the Kameng River at Rupa (Brahmaputra basin), in Arunachal Pradesh, India, differs from all its congeners in having the posterior margin of the maxillary barbel with villiform projections, vs. entire, crenulate, laciniate or lobulate in all other species of the genus. Smith (1933) erected the glyptosternine catfish genus Oreoglanis and designated O. siamensis from the Kang River [=Mae Klang], northem Thailand, as its type species. The representatives of the genus possess a continuous post-labial groove; gill openings not extending on to the venter; homodont dentition in the upper jaw; heterodont dentition in the lower jaw (characterized by an inner row of pointed teeth and an outer row of short, spatulate teeth); upper-jaw teeth pointed, in two patches, joined into a continuous band; and 16-18 branched pectoral rays (Thomson & Page, 2006). Some authors have expressed the need to rediagnose the glyptostemine genera (He, 1996; Ng, 2004a; Ng & Kottelat, 1999; Ng & Rainboth, 2001; Ng & Freyhof, 2001); however, as in previous studies, the genus Oreoglanis is considered valid.
NSTL