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. ๐ธ๐๐๐๐๐ฆ๐ง๐๐ ๐๐๐๐๐๐๐ โ๐๐๐๐๐ ๐๐ is established as the type species for the new genus – ๐ต๐๐ โ๐๐๐ฆ๐ง๐๐ ๐๐๐๐๐๐๐ โ๐๐๐๐๐ ๐๐ .
Open-access – https://zse.pensoft.net/article/116535/
๐ฅ๐ฒ๐๐ฒ๐ฎ๐ฟ๐ฐ๐ต ๐ง๐ถ๐๐น๐ฒ
๐ต๐๐ โ๐๐๐ฆ๐ง๐๐ ๐โ๐๐๐, a new genus and species of sucker loach (Teleostei, Gastromyzontidae) from South China
๐๐ถ๐๐ฎ๐๐ถ๐ผ๐ป
Gong X, Zhang E (2024) ๐ต๐๐ โ๐๐๐ฆ๐ง๐๐ ๐โ๐๐๐, 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
๐๐ฏ๐๐๐ฟ๐ฎ๐ฐ๐
๐ต๐๐ โ๐๐๐ฆ๐ง๐๐, new genus, is here established for ๐ธ๐๐๐๐๐ฆ๐ง๐๐ ๐๐๐๐๐๐๐ โ๐๐๐๐๐ ๐๐ , 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 ๐ธ๐๐๐๐๐ฆ๐ง๐๐ and ๐๐๐๐ก๐๐๐ฆ๐ง๐๐, 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 ๐ธ๐๐๐๐๐ฆ๐ง๐๐ 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. ๐ต๐๐ โ๐๐๐ฆ๐ง๐๐ ๐โ๐๐๐, new species, and ๐ต. ๐๐๐๐๐๐๐ โ๐๐๐๐๐ ๐๐ , the single congeneric species, differ in number of lateral-line pored scales, body coloration, and cephalic contour, and also in substantial genetic divergence.
๐๐๐๐บ๐ผ๐น๐ผ๐ด๐
Genus name, ๐ต๐๐ โ๐๐๐ฆ๐ง๐๐ – The generic name is derived from Bashi (ๅฒๆฏ), 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 โๅฒๆฏ้ณ ๅฑโ.
Species name, ๐โ๐๐๐ – 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 ๐ธ๐๐๐๐๐ฆ๐ง๐๐ and ๐๐๐๐ โ๐๐๐๐, which are two close relatives of the genus under description. The Chinese common specific name โ้ๆฐๅฒๆฏ้ณ โ is here suggested.
๐ฃ๐ต๐ผ๐๐ผ ๐๐ฟ๐ฒ๐ฑ๐ถ๐
Lateral view of freshly captured individual of A. ๐ต. ๐๐๐๐๐๐๐ โ๐๐๐๐๐ ๐๐ , IHB 202109064259, topotype, 30.8 mm SL; China: Guangxi Province: Shanglin County: Qingshui-He at Naxue Village of Dafeng Town; and B. ๐ต. ๐โ๐๐๐, IHB 202109064273, holotype, 28.3 mm SL; China: Guangxi Province: Mashan County: Wuming-He at Xinyang Village of Gulin Town.
Copyright ยฉ 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/
