Abstract
A new species of Yunnanilus is described from Tuojiang River, Sichuan, China. The new species, Yunnanilus jiuchiensis, can be distinguished from other species of Yunnanilus by the following combination of characters: processus dentiformis absent; body covered with scarce scales; lateral-line incomplete, as long as half the length of the pectoral-fin length, with 6–11 pores; eye diameter larger than interorbital width; and caudal-peduncle length less than its depth.
References
An, L., Liu, S.B. & Li, W.X. (2009) Two new loaches of the genus Yunnanilus (Baliteridae) from Yunnan, China. Acta Zootaxonomica Sinica, 34, 630–638. [in Chinese]
Chen, Z.M., Yang, J. & Yang, J.X. (2012) Description of a new species of the genus Yunnanilus Nichols, 1925 (Teleostei: Nemacheilidae) from Yunnan, China. Zootaxa, 3269, 57–64.
Ding, R.H. (1992) A new species of the Yunnanilus from Guizhou, China. Acta Zootaxonomic Sinica, 17, 489–491. [in Chinese]
Ding, R.H. (1995) A new species of the genus Yunnanilus from western Sichuan, China. Acta Zootaxonomica Sinica, 20, 253–256. [in Chinese]
Du, L.N., Chen, X.Y. & Yang, J.X. (2013) A catalog of fish specimens preserved within Kunming Institute of Zoology, Chinese Academy of Sciences. Zoological Research, 34, 345–360. [in Chinese]
Du, L.N., Lu, Y.F. & Chen, X.Y. (2015) Yunnanilus qujinensis, a new species of loach from Yunnan, southwest China (Teleostei: Nemacheilidae). Ichthyological Exploration of Freshwaters, 26, 249–254.
Freyhof, J. & Serov, D.V. (2001) Nemacheiline loaches from Central Vietnam with descriptions of a new genus and 14 new species (Cypriniformes: Balitoridae). Ichthyological Exploration of Freshwaters, 12, 133–191.
Gan, X., Chen, X.Y. & Yang, J.X. (2007) A new Nemacheiline loach of genus Yunnanilus (Balitoridae) from Guangxi, China. Zoological Research, 28, 321–324. [in Chinese]
IUCN (2018) The IUCN Red List of Threatened Species. Version 2018-1. Available from: http://www.iucnredlist.org (accessed 5 July 2018)
Kottelat, M. & Chu, X.L. (1988) Revision of Yunnanilus with descriptions of a miniature species flock and six new species from China (Cypriniformes: Homalopteridae). Environmental Biology of Fishes, 23, 65–93.
https://doi.org/10.1007/BF00000739Kottelat, M. (1990) Indochinese nemacheilines: A revision of nemacheiline loaches (Pisces: Cypriniformes) of Thailand, Burma, Laos, Cambodia and southern Viet Nam. Druckerei braunstein, München, 262 pp.
Kottelat, M. (2012) Conspectus cobitidum: an inventory of the loaches of the world (Teleostei: Cypriniformes: Cobitoidei). The Raffles Bulletin of Zoology, 26 (Supplement), 1–199.
Kottelat, M. (2013) The fishes of the inland waters of southeast Asia: a catalogue and core bibliography of the fishes known to occur in freshwaters, Mangroves and Estuaries. The Raffles Bulletin of Zoology, 27 (Supplement), 1–663.
Lan, J.H., Gan, X., Wu, T.J. & Yang, J. (2013) Cave Fishes of Guangxi, China. Science Press, Beijing, pp. 104–139. [in Chinese]
Li, W.X. & Duan, S. (1999) A new species of view and admire fishes from Kunming, Yunnanilus tigerivinus sp. nov. Journal of Yunnan Agricultural University, 14, 254–260. [in Chinese]
Li, W.X. (2004) The three new species of Cobitidae from Yunnan, China. Journal of Jishou University, Natural Science Edition, 25, 93–96. [in Chinese]
Li, W.X., Mao, W.N., Sun, R.F. & Lu, Z.M. (1994) Two new species of Yunnanilus from Yunnan province, China (Cypriniformes, Cobitidae). Acta Zootaxonomica Sinica, 19, 370–374. [in Chinese]
Li, W.X., Tao, J.N., Mao, W.N. & Lu, Z.M. (2000) Two new species of Yunnanilus from eastern Yunnan, China. Acta Zootaxonomica Sinica, 25, 349–353. [in Chinese]
Li, W.X., Wu, D.F., Xu, K., Gao, X.M., Chen, A.L., Wu, Q.L. & Wang, J.H. (1999) Fishes in the Heilongtan reservoir and its drainage. Sichuan Journal of Zoology, 18, 3–7. [in Chinese]
Yang, J.X. & Chen, Y.R. (1995) The biology and resource utilization of the fishes of Fuxian Lake, Yunnan. Yunnan Science and Technology Press, Kunming, 224 pp. [in Chinese]
Yang, J.X. (1990) Cyprinidae. In: Chu, X.L. & Chen, Y.R. (Eds.), The fishes of Yunnan, China Part II. Science Press, Beijing, pp. 13–25. [in Chinese]
Yang, J.X. (1991) The fishes of Fuxian Lake, Yunnan, China, with description of two new species. Ichthyological Exploration of Freshwaters, 2, 193–202.
Yang, J.X., Chen, X.Y. & Lan, J.H. (2004) Occurrence of two new plateau-indicator loaches of Nemacheilinae (Balitoridae) in Guangxi with reference to Zoogeographical significance. Zoological Research, 25, 111–116. [in Chinese]
Zheng, C.Y. (1989) The Fishes of Pearl River. Science Publishing Company, Beijing, 438 pp. [in Chinese]
Zhou, W. & He, J.C. (1989) A new species of Dwarfism in Yunnanilus. Acta Zootaxonomic Sinica, 14, 380–385. [in Chinese]
Zhu, S.Q. (1989) The loaches of the subfamily Nemacheilinae in China. Jiangsu Science and Technology Publishing House, Nanjing, 150 pp. [in Chinese]