Mustura daral, a new species of stone loach from Arunachal Pradesh, Northeast India (Teleostei: Nemacheilidae) Author Rameshori, Yumnam 0000-0001-7119-6125 Department of Life Sciences (Zoology), Manipur University, Canchipur- 795 003, Manipur, India. & rameshoriyumnam @ gmail. com; https: // orcid. org / 0000 - 0001 - 7119 - 6125 rameshoriyumnam@gmail.com Author Chinglemba, Yengkhom Department of Life Sciences (Zoology), Manipur University, Canchipur- 795 003, Manipur, India. Author Darshan, Achom 0000-0001-7679-3519 Department of Life Sciences (Zoology), Manipur University, Canchipur- 795 003, Manipur, India. & achom _ darshan @ yahoo. com; https: // orcid. org / 0000 - 0001 - 7679 - 3519 achom_darshan@yahoo.com Author Vishwanath, Waikhom 0000-0002-4516-4151 Department of Life Sciences (Zoology), Manipur University, Canchipur- 795 003, Manipur, India. & wvnath @ gmail. com; https: // orcid. org / 0000 - 0002 - 4516 - 4151 wvnath@gmail.com text Zootaxa 2022 2022-04-27 5129 2 285 294 journal article 55583 10.11646/zootaxa.5129.2.8 8e131707-b7f5-4589-9433-f63238299c34 1175-5326 6500976 B25CA703-A27E-4A8C-8A6F-D3C8EBCC8EC8 Key to species of Mustura of the Eastern Himalayan region 1a. Body with bars continuous with saddles.................................................................... 2 1b. Body with bars and/or blotches alternating with saddles....................................................... 7 2a. Flank with 6–10 regular set and shaped bars................................................................. 3 2b. Flank with 11–23 irregularly set and shaped bars............................................................. 4 3a. Flank with 6–9 short regular bars; median notch present in lower jaw; female with suborbital slit............... M. shuensis 3b. Flank with 9–10 regular bars; median notch in lower jaw absent; female without suborbital slit.................. M . daral 4a. Branched caudal-fin rays 15............................................................................. 5 4b. Branched caudal-fin rays 16–17.......................................................................... 6 5a. Bar at caudal-fin base complete.............................................................. M . dikrongensis 5b. Bar at caudal-fin base dissociated.......................................................... M . chhimtuipuiensis 6a. Head mottled; W-shaped bar at caudal fin base................................................... M . walongensis 6b. Head plain; short bar at caudal-fin base, occupying medially.......................................... M . subhashi 7a. Second branched pectoral-fin ray with a distal filamentous extension.................................. M . harkishorei 7b. Second branched pectoral-fin ray without distal filamentous extension............................................ 8 8a. Branched dorsal-fin rays 8½............................................................................. 9 8b. Branched dorsal-fin rays 9½–10½....................................................................... 12 9a. Branched caudal-fin rays 15................................................................... M . tuivaiensis 9b. Branched caudal-fin rays 16–17......................................................................... 10 10a. Branched caudal-fin rays usually 17 (rarely 16); flank with 6–10 irregular set and shaped blotches or bars......... M. celata 10b. Branched caudal-fin rays 16; flank with 13–20 irregular set and shaped blotches and bars............................ 11 11a. Flank with 13–17 irregular set and shaped blotches and bars; lower lip with a median notch.............. M. chindwinensis 11b. Flank with 18–20 narrow and irregular set and shaped bars; lower lip without a median notch............ M. yunnaniloides 12a. Flank with 12–14 broken, irregular set and shaped bars and blotches; bar at caudal-fin base complete; caudal fin with irregular set and shaped rows of spots..................................................................... M . tigrina 12b. Flank with 9–13 irregular set and shaped blotches or bars; bar at caudal-fin base dissociated; caudal fin with 2-3 rows of Vshaped spots........................................................................................ 13 13a. Mouth strongly arched; lower lip with conspicuous triangular cushion; absence of a rhomboid shaped dark-brown mark on the nape....................................................................................... M. prashadi 13b. Mouth moderately arched; lower lip with an inconspicuous triangular cushion; presence of a rhomboid shaped dark-brown mark encircling a pale oval area on the nape....................................................... M. taretensis