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CATHAICA 2(7): 69–72

A new genus of Parreysiinae Henderson, 1935 from Yunnan, China (Bivalvia: Unionidae)

云南雕刻蚌亚科（双壳纲：蚌科）一新属

Hong-Quan Xiang (向泓铨)1,*, Yue-Ming He (何岳铭)2 & Ge Guo (国歌)3

1 Yuxi Agriculture Vocation-Technical College Department of Animal Science, Yuxi 653106, Yunnan, China; https://orcid.org/0009-0005-6737-3092

[玉溪农业职业技术学院动物科学系 玉溪 653106 云南 中国]

2 College of Engineering and Technology, Tianjin Agricultural University, Tianjin 300384, China; https://orcid.org/0009-0002-9849-7977

[天津农学院工程技术学院 天津 300384 中国]

3 Bejing Chaoyang RCF Dongba School, Beijing 100018, China; https://orcid.org/0009-0000-4238-6798

[北京市朝阳区人朝分东坝学校 北京 100018 中国]

（*通讯作者）

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Abstract

A new genus of freshwater mussel, Chenunionetta n. gen., is described from Yunnan, China. It is distinguished from other genera of Indochinellini by its irregularly elongate triangular shell, an elongate, narrow, and relatively pointed posterior end, a weak ridge near the posterodorsal margin, and a smooth transition between the dorsal and posterior margins.

Key words: Freshwater molluscs, new taxon, taxonomy, Unionetta xishuangbannaensis

摘 要

本文描述了产自云南的河蚌新属：陈珠蚌属 Chenunionetta n. gen.。该属可依据以下特征与同族其他属区分：贝壳延长，不规则的三角形，具延长、狭窄且相对较尖的后部，背缘后部具一弱脊，且背缘与后缘平滑过渡。印支蚌族各属普遍非单系群，有待开展进一步的系统修订。

关键词：淡水贝类，新阶元，分类学，版纳小珠蚌