Zoological Survey of India; Freshwater Fish Section; 27 J.L. Nehru Road; Kolkata; India.
Zoological Survey of India; Arunachal Pradesh Regional Centre; Senki Valley; Itanagar; Arunachal Pradesh; India.
Zootaxa. 2023 Dec 8;5383(1):75-82. doi: 10.11646/zootaxa.5383.1.6.
Glyptothorax heokheei, a new species of sisorid catfish is described from the Brahmaputra River drainage in India. It can be distinguished from all congeners, exceptG. dikrongensis,G. indicus,G. rugimentumandG. obliquimaculatus, in having the unculiferous striae of thoracic adhesive apparatus extending anteriorly onto gular region.Glyptothorax heokheeiis distinguished fromG. dikrongensisandG. obliquimaculatusin having a slender body at the anus, more serrations on posterior margin of pectoral-fin spine, greater number of branched anal fin rays, and the extremity of dorsoposterior margin of adipose fin uniformly convex (vs. sharply angular). It differs fromG. rugimentumin having a chevron-shaped (vs. rhomboidal) thoracic adhesive apparatus, more serrations on posterior margin of pectoral-fin spine, and lacking vertical bars on body.Glyptothorax heokheeidiffers fromG. indicusin having a shorter post-adipose distance, smaller interorbital width, more serrations on posterior margin of pectoral-fin spine and nasal barbel not reaching (vs. reaching) anterior margin of eye.Glyptothorax heokheeiis the fifth species ofthe genuspossessing unculiferous ridges of thoracic adhesive apparatus extending anteriorly onto the gular region.
拟平鳅属一新种记述(鲶形目:平鳍鳅科)。本文描述了印度雅鲁藏布江流域的拟平鳅属一新种——贺氏拟平鳅。该新种与除了G. dikrongensis、G. indicus、G. rugimentum 和 G. obliquimaculatus 之外的所有近缘种的区别在于,胸鳍附器无刺状突的条纹向前延伸到颈区。贺氏拟平鳅与 G. dikrongensis 和 G. obliquimaculatus 的区别在于肛门后具有细长的身体,更多的胸鳍刺后缘锯齿,更多的分枝肛鳍射线,以及脂鳍后缘背部的末端均匀凸(与急剧角形相反)。它与 G. rugimentum 的区别在于具有一个人字形(而不是菱形)的胸鳍附器,更多的胸鳍刺后缘锯齿,以及身体上没有垂直条纹。贺氏拟平鳅与 G. indicus 的区别在于后脂距较短,眶间较窄,胸鳍刺和鼻须后缘锯齿更多,并且鼻须不达到(而达到)眼睛的前缘。贺氏拟平鳅是第五个具有胸鳍附器无刺状突的条纹向前延伸到颈区的种。