Mustura Celata, a New Genus and Species of Loaches from Northern Myanmar, and an Overview of Physoschistura and Related Taxa (Teleostei: Nemacheilidae)
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1 Ichthyological Exploration of Freshwaters/IEF-1080/pp. 1-26 Published 2 August 2018 LSID: http://zoobank.org/urn:lsid:zoobank.org:pub:BEBD7270-0217-452F-B11B-99CA01744A3B DOI: http://doi.org/10.23788/IEF-1080 Mustura celata, a new genus and species of loaches from northern Myanmar, and an overview of Physoschistura and related taxa (Teleostei: Nemacheilidae) Maurice Kottelat* Mustura celata, new genus and species, is described from small tributaries of Lake Indawgyi, Myanmar. Mustura is distinguished from other genera of Nemacheilidae by having: the male pectoral fin slanted upwards, with branched ray 1 wider than following rays, branched once and branches close together, without membrane between them except near tip; wide, thickened unculiferous pad extending along anterior branched pectoral-fin rays, covered dorsally by small conical tubercles; two air bladder capsules connected by a manubrium and posterior chamber small and circular, or absent; lower lip with wide median interruption, two halves forming an acute angle, not in contact medially, wide and fleshy medially, forming a triangular ‘cushion’, partly free from jaw and connected to throat by a frenum; suborbital flap present, with small tubercles on posterior extremity. Most species earlier placed in Physoschistura in fact belong to Mustura. Physoschistura is diagnosed by having the two halves of the air bladder capsule joined medially (without manubrium) and the posterior chamber free, well developed and in direct contact with the capsule; it presently includes only P. brunneana (type species), P. pseudobrunneana, and possibly P. elongata, P. raoi and P. rivulicola. Mustura celata is distinguished from the other species of Mustura by, among others, the colour pattern (6-10 [usually 7] very irregular blotches or bars on flank, alternating with irregu- 1 lar saddles); 9 + 8 branched caudal-fin rays; 8 /2 branched dorsal-fin rays; lateral line complete; caudal peduncle depth 1.3-1.7 times in its length. Schistura shuensis, S. maepaiensis and S. bella belong to Mustura. Physoschistura absumbra belongs to Schistura s. l.; P. shuangjiangensis belongs to a distinct genus, apparently unnamed. Mustura, Pteronemacheilus, Physoschistura and Petruichthys seem to be closely related; they share features of the mouth morphology and unique features of the male pectoral fin and suborbital flap. Introduction where about 260 species have been described; most are described and figured in Kottelat (1984, Nemacheilid loaches typically occur in fast flow- 1990, 1998, 2000, 2001) and Freyhof & Serov (2001). ing water of small streams and less often in other Besides, new species are still regularly described habitats such as large rivers and caves. The family (e. g. Bohlen & Šlechtová, 2010, Ou et al., 2011, has its greatest diversity in Southeast Asia from Plongsesthee et al., 2011, 2013), especially in * Rue des Rauraques 6, 2800 Delémont, Switzerland (permanent address); and Lee Kong Chian Natural Histo- ry Museum, National University of Singapore, 2 Conservatory Drive, Singapore 117377. E-mail: [email protected] Ichthyol. Explor. Freshwaters – ISSN 0936-9902 (print) © 2018 by Verlag Dr. Friedrich Pfeil, München, Germany www.pfeil-verlag.de 25 Literature cited Esmaeili, H. R., G. Sayyadzadeh, M. Özulug, M. Geiger & J. Freyhof. 2014. Three new species of Annandale, N. 1918. Fish and fisheries of the Inlé Lake. Turcinoemacheilus from Iran and Turkey (Teleostei: Records of the Indian Museum, 14: 33-64, pls. 1-7. Nemacheilidae). Ichthyological Exploration of Bohlen, J. & V. Šlechtová. 2010. Schistura udomritthiruji, a Freshwater, 24 (2013 [2014]): 257-273. new loach from southern Thailand (Cypriniformes: Freyhof, J. & D. V. Serov. 2001. Nemacheiline loaches Nemacheilidae). Ichthyological Exploration of from Central Vietnam with descriptions of a new Freshwaters, 20 (2009 [2010]): 319-324. genus and 14 new species (Cypriniformes: Balitori- Bohlen, J. & V. Šlechtová. 2011. A new genus and two dae). Ichthyological Exploration of Freshwaters, new species of loaches (Teleostei: Nemacheilidae) 12: 133-191. from Myanmar. Ichthyological Exploration of Fresh- Hora, S. L. 1921. Fish and fisheries of Manipur with some waters, 22: 1-10. observations on those of the Naga hills. Records of Bohlen, J. & V. Šlechtová. 2013a. Two new species of the Indian Museum, 22: 165-214, pls. 9-12. Schistura from Myanmar (Cypriniformes: Nema- Hora, S. L. 1929. Notes on fishes in the Indian Museum. cheilidae). Ichthyological Exploration of Freshwa- XVII. Loaches of the genus Nemachilus from Burma. ters, 24: 21-30. Records of the Indian Museum, 31: 311-334, pls. Bohlen, J. & V. Šlechtová. 2013b. Schistura puncticeps, 14-15. a new species of loach from Myanmar (Teleostei: Kottelat, M. 1982: A new noemacheiline loach from Nemacheilidae). Ichthyological Exploration of Thailand and Burma. Japanese Journal of Ichthyol- Freshwaters, 24: 85-92. ogy, 29: 169-172. Bohlen, J. & V. Šlechtová. 2014. Schistura shuensis, a Kottelat, M. 1984. Revision of the Indonesian and Ma- new species of loach from Myanmar (Teleostei: laysian loaches of the subfamily Noemacheilinae. Nemacheilidae). Ichthyological Exploration of Japanese Journal of Ichthyology, 31: 225-260. Freshwaters, 24: 217-223. Kottelat, M. 1990. Indochinese nemacheilines. A revision Bohlen, J., V. Šlechtová & K. Udomritthiruj. 2014. of nemacheiline loaches (Pisces: Cypriniformes) of Schistura hypsiura, a new species of loach (Cobi- Thailand, Burma, Laos, Cambodia and southern toidea: Nemacheilidae) from South-West Myanmar. Viet Nam. Pfeil, München, 262 pp. Raffles Bulletin of Zoology, 62: 21-27. Kottelat, M. 1998. Fishes of the Nam Theun and Xe Bohlen, J., M. Petrtýl, P. Chaloupková & C. Borin. 2016. Bangfai basins, Laos, with diagnoses of twenty-two Schistura kampucheensis, a new species of loach from new species (Teleostei: Cyprinidae, Balitoridae, Co- Cambodia (Teleostei: Nemacheilidae). Ichthyologi- bitidae, Coiidae and Odontobutidae). Ichthyological cal Exploration of Freshwaters, 26: 353-362. Exploration of Freshwaters, 9: 1-128. Chen, X.-Y. 2013. [Checklist of fishes of Yunnan]. Zoo- Kottelat, M. 2000. Diagnoses of a new genus and 64 new logical Research, 34: 281-343 [In Chinese, English species of fishes from Laos (Teleostei: Cyprinidae, summary]. Balitoridae, Bagridae, Syngnathidae, Chaudhuriidae Chen, X.-Y., M. Kottelat & D. A. Neely. 2011. Physo- and Tetraodontidae). Journal of South Asian Natural schistura yunnaniloides, a new species of loach from History, 5: 37-82. Myanmar (Teleostei: Nemacheilidae). Ichthyologi- Kottelat, M. 2001. Fishes of Laos. Wildlife Heritage cal Exploration of Freshwaters, 22: 179-183. Trust, Colombo, 198 pp. Chen, X.-Y & D. A. Neely. 2012. Schistura albirostris, a Kottelat, M. 2012a. Acanthocobitis pictilis, a new species new nemacheiline loach (Teleostei: Balitoridae) from of loach from Myanmar and Thailand (Teleostei: the Irrawaddy River drainage of Yunnan Province, Nemacheilidae). Zootaxa, 3327: 45-52. China. Zootaxa, 3586: 222-227. Kottelat, M. 2012b. Conspectus cobitidum: an inventory Conway, K. W., D. R. Edds, J. Shrestha & R. L. Mayden. of the loaches of the world (Teleostei: Cyprini- 2011. A new species of gravel-dwelling loach formes: Cobitoidea). Raffles Bulletin of Zoology, (Ostariophysi: Nemacheilidae) from the Nepalese Supplement 26: 1-199. Himalayan foothills. Journal of Fish Biology, 79: Kottelat, M. 2013. The fishes of inland waters of South- 1746-1759. east Asia: a catalogue and core bibliography of the Conway, K. W., N. K. Lujan, J. G. Lundberg, R. L. fishes known to occur in freshwaters, mangroves Mayden & D. S. Siegel. 2012. Microanatomy of the and estuaries Raffles Bulletin of Zoology, Supple- paired-fin pads of ostariophysan fishes (Teleostei: ment 27: 1-663. Ostariophysi). Journal of Morphology, 273: 1127- Kottelat, M. 2017a. A new genus and three new species 1149. of nemacheilid loaches from northern Irrawaddy Das, D. N. & A. Darshan. 2017. Physoschistura harkishorei, drainage, Myanmar (Teleostei: Cypriniformes). a new species of loach from Arunachal Pradesh, Raffles Bulletin of Zoology, 65: 80-99. northeastern India (Teleostei: Nemacheilidae). Kottelat, M. 2017b. Schistura epixenos, a new species Zootaxa, 4337: 403-412. of loach from the Nakai Plateau, Laos (Teleostei: Endruweit, M. 2017. A new Physoschistura from a Nemacheilidae). Zootaxa, 4300: 44-54. Salween affluent in western Yunnan (Teleostei: Nemacheilidae). Zootaxa, 4263: 378-386. Ichthyol. Explor. Freshwaters, IEF-1080 26 Kottelat, M. 2017c. Schistura colossa and S. klydonion, Ou, C., C. G. Montaña, K. O. Winemiller & K. W. two new species of loaches from Bolaven Plateau, Conway. 2011. Schistura diminuta, a new miniature southern Laos (Teleostei: Nemacheilidae). Raffles loach from the Mekong River drainage of Cambodia Bulletin of Zoology, 65: 341-356. (Teleostei: Nemacheilidae). Ichthyological Explora- Kottelat, M. 2017d. Schistura indawgyiana, a new loach tion of Freshwaters, 22: 193-200. from Lake Indawgyi basin, Myanmar (Teleostei: Plongsesthee, R., M. Kottelat & F. W. H. Beamish. Nemacheilidae). Ichthyological Exploration of 2013. Schistura crocotula, a new loach (Teleostei: Freshwaters, 28: 1-8. Nemacheilidae) from southern Thailand. Ichthyo- Kottelat, M. 2017e. Schistura systomos, a new species of logical Exploration of Freshwaters, 24: 171-178. loach from southern Laos (Teleostei: Nemachei- Plongsesthee, R., L. M. Page & F. W. H. Beamish. 2011. lidae). Ichthyological Exploration of Freshwaters, Schistura aurantiaca, a new species from