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CATHAICA 2(4): 39–52

Revisiting the taxonomic position of Aculamprotula polysticta (Heude, 1877) (Bivalvia: Unionidae: Unioninae): confirming an earlier fortuitous conclusion drawn from misidentified materials

多瘤尖丽蚌的分类学地位的再讨论（双壳纲：蚌科：蚌亚科）

Zhong-Guang Chen (陈重光)1,5,*, Hong-Fei Hu (胡鸿飞)1,6, Hui Zheng (郑辉)1,7, Yu-Xin Ge (葛雨馨)2, Yi-Jun Li (李忆均)3, Liang Guo (郭亮)4, Shan Ouyang (欧阳珊)1,8 & Xiao-Ping Wu (吴小平)1,9,*

1 School of Life Sciences, Nanchang University, Nanchang, Jiangxi 330031, China

[南昌大学生命科学学院 南昌 330031 中国]

2 Maryland Institute College of Art, Baltimore, Maryland, 21217, USA;

https://orcid.org/0009-0003-5070-7119

[马里兰艺术学院 巴尔的摩 21217 美国]

3 School of geoscience, faculty of science, the University of Sydney, Sydney, NSW 2006, Australia

[悉尼大学地球科学学院 悉尼 NSW 2006 澳大利亚]

4 Fuzhou Wilds of Insects Cultural Creativity, Fuzhou, Fujian 353000, China

[福州虫林野趣 福州 353000 中国]

5 https://orcid.org/0000-0003-2689-3321; Email: zgchen1002@foxmail.com

6 https://orcid.org/0009-0001-7088-6455

7 https://orcid.org/0009-0004-5222-3975

8 https://orcid.org/0009-0004-6973-4800

9 https://orcid.org/0000-0002-8037-5640; Email: xpwu@ncu.edu.cn

（*通讯作者）

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Abstract

This study revisits the taxonomic position of Aculamprotula polysticta (Heude 1877), a species with a complex taxonomic history. Through phylogenetic analysis of verified specimens of A. polysticta and A. scripta (Heude 1875), it is found that the study reassigning A. polysticta to the family Unionidae was based on misidentified A. scripta specimens, and that the correct conclusion was inadvertently reached as a result. The phylogenetic results confirm that A. polysticta belongs to the unionid genus Aculamprotula and forms a sister group with A. coreana (von Martens, 1886), showing only minimal genetic divergence. Integrating molecular and morphological evidence, we propose synonymising A. coreana under A. polysticta.

Key words: Freshwater mussel, Margaritiferidae, molecular phylogeny, taxonomic revision

摘 要

本研究重新审视了多瘤尖丽蚌 Aculamprotula polysticta (Heude, 1877) 这一具有复杂分类历史的物种的分类归属。通过对经验证的多瘤尖丽蚌及刻裂尖丽蚌 A. scripta (Heude, 1875) 标本开展分子系统发育分析，我们发现，先前将多瘤尖丽蚌重新归入蚌科的研究实际使用了误鉴定的刻裂尖丽蚌标本，即该正确结论为偶然所得。分子系统发育结果表明，多瘤尖丽蚌应归入蚌科尖丽蚌属，并与鉴定为朝鲜尖丽蚌 A. coreana (von Martens, 1886) 的标本构成姐妹群，二者之间仅存在极小的遗传分化。结合分子与形态学证据，我们将朝鲜尖丽蚌处理为多瘤尖丽蚌的次异名。

关键词：河蚌，分类修订，分子系统发育，珍珠蚌科