Molecular phylogeny reveals a new genus and species of freshwater mussel (Bivalvia, Unionidae, Gonideinae) from Jiangxi, China Author Dai, Yu-Ting https://orcid.org/0009-0001-5856-3987 School of Life Sciences, Nanchang University, Nanchang 330031, China Author Chen, Zhong-Guang 0000-0003-2689-3321 School of Life Sciences, Nanchang University, Nanchang 330031, China Author Cheng, Yu-Zhuo School of Life Sciences, Nanchang University, Nanchang 330031, China Author Huang, Xiao-Chen 0000-0002-0242-3571 School of Life Sciences, Nanchang University, Nanchang 330031, China Author Ouyang, Shan School of Life Sciences, Nanchang University, Nanchang 330031, China Author Shu, Feng-Yue College of Life Sciences, Qufu Normal University, Qufu 273165, China Author Wu, Xiao-Ping School of Life Sciences, Nanchang University, Nanchang 330031, China text Zoosystematics and Evolution 2024 2024-10-22 100 4 1419 1429 journal article 10.3897/zse.100.135217 6BD143C1-F9E5-4685-9B80-857CDDB788AD Genus Pseudopostolata Dai, Chen, Huang & Wu gen. nov. Figs 2 C, D , 4 Type species. Pseudopostolata angula Chen, Dai, Huang & Wu , sp. nov. Diagnosis. Shell medium size, moderately thick, flat, long, glossy, black without any color rays. Anterior rounded, short, posterior long, and wide. Dorsal margin slightly curved downwards and truncated behind, with a distinct obtuse angle in the middle of posterior margin. Shell surface with a low secondary posterior ridge end in the angle on the posterior margin. Both left and right valves with one or two pseudocardinal teeth. Etymology. The specific name pseudopostolata is made from the Latin pseudo for false and postolata for a unionid genus, alluding to their similar shell morphology. Vernacular name. ‘ Pseudorear-wide mussel genus’ (English) and ‘ Ni Hou Ju Bang Shu’ (拟后矩蚌属) (Chinese). Distribution. Wujiang River in the Yongfeng section of Jiangxi Province , China . Remarks. The new genus belongs to the tribe Gonideini of the subfamily Gonideinae , which currently consists of only one species. The new genus exhibits morphological similarities with Postolata guangxiensis Dai, Huang, Guo & Wu, 2023 . However, it differs in terms of its elongated shell and the more distinct angle on the posterior margin. Figure 4. Eight specimens of Pseudopostolata angula gen. et sp. nov. were collected from the Wujiang River in Ji’an City, Jiangxi, China. A is the holotype; A-H responds to specimen vouchers: 24 _ NCU _ XPWU _ PA 01 - 24 _ NCU _ XPWU _ PH 08.