Glyptothorax lanceatus, a new species of sisorid catfish (Teleostei: Siluriformes) from southwestern China

Abstract

Glyptothorax lanceatus, a new species of sisorid catfish from the upper Salween River drainage in southwestern China, is described. It can be distinguished from congeners in having the following combination of characters: length of nasal barbel 18.1-21.5% HL; length of maxillary barbel 86.2-91.1% HL; length of inner mandibular barbel 23.8-28.2% HL; length of outer mandibular barbel 42.8-49.1% HL; eye diameter 6.8-8.3% HL; interorbital distance 20.2-22.1% HL; elongate, ovoid tubercles on dorsal surface of head; head length 23.0-25.1% SL; head width 16.3-18.8% SL; width of adhesive apparatus 1.60-1.74 times in its length; depressed area in thoracic adhesive apparatus not wholly enclosed by ridges; ridges of thoracic adhesive apparatus not extending onto gular region;10-13 serrations on posterior edge of pecto-ral spine; pectoral-fin length 21.1-24.5% SL; length of adipose-fin base 12.2-13.2% SL; dorsal-to-adipose distance 23.0- 24.8% SL; distally expanded neural spines in vertebrae between dorsal and adipose fins; body depth at anus 12.4-14.8% SL; post-adipose distance 18.7-20.3% SL; caudal-peduncle length 20.3-21.8% SL; caudal-peduncle depth 6.7-7.4% SL;40-41 vertebrae; reaching to at least ca. 170 mm TL in size; and uniformly dark-colored body generally devoid of pale or dark markings. Copyright © 2012 Magnolia Press.