Researchers present Bashimyzon cheni, a new genus and species of sucker loach (Gastromyzontidae) from the You-Jiang of the Pearl River basin in Guangxi Province, South China. 𝐸𝑟𝑟𝑜𝑚𝑦𝑧𝑜𝑛 𝑑𝑎𝑚𝑖𝑛𝑔𝑠ℎ𝑎𝑛𝑒𝑛𝑠𝑖𝑠 is established as the type species for the new genus – 𝐵𝑎𝑠ℎ𝑖𝑚𝑦𝑧𝑜𝑛 𝑑𝑎𝑚𝑖𝑛𝑔𝑠ℎ𝑎𝑛𝑒𝑛𝑠𝑖𝑠.
Open-access – https://zse.pensoft.net/article/116535/
𝗥𝗲𝘀𝗲𝗮𝗿𝗰𝗵 𝗧𝗶𝘁𝗹𝗲
𝐵𝑎𝑠ℎ𝑖𝑚𝑦𝑧𝑜𝑛 𝑐ℎ𝑒𝑛𝑖, a new genus and species of sucker loach (Teleostei, Gastromyzontidae) from South China
𝗖𝗶𝘁𝗮𝘁𝗶𝗼𝗻
Gong X, Zhang E (2024) 𝐵𝑎𝑠ℎ𝑖𝑚𝑦𝑧𝑜𝑛 𝑐ℎ𝑒𝑛𝑖, a new genus and species of sucker loach (Teleostei, Gastromyzontidae) from South China. Zoosystematics and Evolution 100(1): 309-324. https://doi.org/10.3897/zse.100.116535
𝗔𝗯𝘀𝘁𝗿𝗮𝗰𝘁
𝐵𝑎𝑠ℎ𝑖𝑚𝑦𝑧𝑜𝑛, new genus, is here established for 𝐸𝑟𝑟𝑜𝑚𝑦𝑧𝑜𝑛 𝑑𝑎𝑚𝑖𝑛𝑔𝑠ℎ𝑎𝑛𝑒𝑛𝑠𝑖𝑠, and a new species of the genus is described from the You-Jiang of the Pearl River (=Zhu-Jiang in mandarin Chinese) basin in Guangxi Province, South China.
This new genus has a small gill opening above the pectoral-fin base and short pectoral fins extending backwards short of pelvic-fin insertions, both characters combined to separate it from all currently-recognized gastromyzontid genera except 𝐸𝑟𝑟𝑜𝑚𝑦𝑧𝑜𝑛 and 𝑃𝑟𝑜𝑡𝑜𝑚𝑦𝑧𝑜𝑛, but differs from the two genera in having a larger gap between the posterior edge of eye and the vertical through the pectoral-fin insertion and very small fleshy lobes posterior to the maxillary-barbel bases.
It is further distinct from its most similar genus 𝐸𝑟𝑟𝑜𝑚𝑦𝑧𝑜𝑛 in having a relatively larger gill opening, fewer branched pectoral-fin rays folded against body, and more posteriorly placed pectoral fins with a shorter fin base. 𝐵𝑎𝑠ℎ𝑖𝑚𝑦𝑧𝑜𝑛 𝑐ℎ𝑒𝑛𝑖, new species, and 𝐵. 𝑑𝑎𝑚𝑖𝑛𝑔𝑠ℎ𝑎𝑛𝑒𝑛𝑠𝑖𝑠, the single congeneric species, differ in number of lateral-line pored scales, body coloration, and cephalic contour, and also in substantial genetic divergence.
𝗘𝘁𝘆𝗺𝗼𝗹𝗼𝗴𝘆
Genus name, 𝐵𝑎𝑠ℎ𝑖𝑚𝑦𝑧𝑜𝑛 – The generic name is derived from Bashi (岜是), the local name of the Damingshan Mountain in Zhuang nationality language, and myzon, a common suffix used in the Balitoridae. Gender masculine. The Chinese common generic name is here suggested as “岜是鳅属”.
Species name, 𝑐ℎ𝑒𝑛𝑖 – The specific epithet is named after Prof. Chen Yi-Yu, a Chinese Academician, in honor for his great contribution to Chinese freshwater fish research. In particular, he discovered and named the type species of 𝐸𝑟𝑟𝑜𝑚𝑦𝑧𝑜𝑛 and 𝑌𝑎𝑜𝑠ℎ𝑎𝑛𝑖𝑎, which are two close relatives of the genus under description. The Chinese common specific name “陈氏岜是鳅” is here suggested.
𝗣𝗵𝗼𝘁𝗼 𝗖𝗿𝗲𝗱𝗶𝘁
Lateral view of freshly captured individual of A. 𝐵. 𝑑𝑎𝑚𝑖𝑛𝑔𝑠ℎ𝑎𝑛𝑒𝑛𝑠𝑖𝑠, IHB 202109064259, topotype, 30.8 mm SL; China: Guangxi Province: Shanglin County: Qingshui-He at Naxue Village of Dafeng Town; and B. 𝐵. 𝑐ℎ𝑒𝑛𝑖, IHB 202109064273, holotype, 28.3 mm SL; China: Guangxi Province: Mashan County: Wuming-He at Xinyang Village of Gulin Town.
Copyright © 2024 the Author(s). Published in Zoosystematics and Evolution journal. This paper is released under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence. https://creativecommons.org/licenses/by/4.0/
https://www.facebook.com/FishInTheNews – https://www.instagram.com/fish.in.the.news – https://twitter.com/FishInTheNews – https://www.youtube.com/@Fish-on-Film
