Vol. 57, 2018

(update: 2018.11.27; 12.13) 

Description of A New Species of the Gudgeon Genus Microphysogobio Mori 1934 (Cypriniformes: Cyprinidae) from Guangdong Province, Southern China

Shih-Pin Huang¹, I-Shiung Chen^2,3, Yahui Zhao⁴, and Kwang-Tsao Shao^5,*

¹Biodiversity Research Center, Academia Sinica, Nankang, Taipei 11529, Taiwan. E-mail: huangshihpin@gmail.com
²Institute of Marine Biology, National Taiwan Ocean University, Jhongjheng, Keelung 20224, Taiwan. E-mail: isc@ntou.edu.tw
³National Museum of Marine Science and Technology, Jhongjheng, Keelung 20248, Taiwan
⁴Key Laboratory of Zoological Systematics and Evolution Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing 100101, China. E-mail: zhaoyh@ioz.ac.cn
⁵National Taiwan Ocean University, Jhongjheng, Keelung 20224, Taiwan

(Received 5 July 2018; Accepted 28 October 2018; Communicated by Hin-Kiu Mok)

Shih-Pin Huang, I-Shiung Chen, Yahui Zhao, and Kwang-Tsao Shao (2018) Microphysogobio luhensis n. sp., a new cyprinid species, is described from the Rongjiang River in eastern Guangdong Province, China. Morphological characters and molecular evidence based on mitochondrial DNA Cytochrome b (Cyt b) and Cytochrome oxidase subunit I (COI) sequences were used to compare this new species with other related species from mainland China, Vietnam and Taiwan. The present molecular evidences revealed that this new species is closely related to M. kachekensis and M. yunnanensis. However, these three species can be well distinguished based on the number of small pearl-like papillae on their inside papillae, lip papillae shape, barbel length, barbel width and color pattern. Furthermore, the morphometric comparison between M. kachekensis and the poorly known species M. yunnanensis is also discussed in this study for the first time. In addition, a diagnostic key to all 14 valid species of Microphysogobio from southern mainland China, Hainan Island and Taiwan is also provided.

Key words: Freshwater Fish, Taxonomy, Rongjiang River, Gudgeon, Cytochrome b.

*Correspondence: E-mail: zoskt@gate.sinica.edu.tw

Supplementary Materials: Table S1