Pseudobuliminus xihuashida, an additional camaenid new species with detached last whorl from the border of Sichuan and Gansu, China (Gastropoda: Stylommatophora: Camaenidae)

四川与甘肃交界地区发现具游离体螺层坚螺的又一新种：西华师大假拟锥螺（腹足纲：柄眼目：坚螺科）

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 Faculty of Science, The University of Melbourne, Parkville VIC 3010, Australia,

[墨尔本大学理学院 帕克维尔 VIC3010 澳大利亚]

https://orcid.org/0000-0002-4150-8906

3 College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China;  

[江西农业大学动物科学技术学院 南昌 330045 中国]

https://orcid.org/0009-0001-5856-3987

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

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

6 https://orcid.org/0000-0002-8037-5640

7 https://orcid.org/0009-0004-6973-4800; Email: ouys1963@qq.com

（*通讯作者)

Published on 16 December 2025        DOI: https://doi.org/10.5281/zenodo.17934482

ZooBank Code: http://zoobank.org/urn:lsid:zoobank.org:pub:AF553401-07EA-4990-B12F-5990148C6250

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Abstract: Pseudobuliminus xihuashida Z.-G. Chen & Z.-Y. Chen, n. sp., a new species with a detached last whorl, is described from the border of Sichuan and Gansu, China. It can be distinguished from all congeners by the cylindrical shell with last 0.5 to 1 whorl detached, the smooth, initially keeled and gradually rounded teleoconch, and the protoconch with small tubercles

摘  要：本文描述了产自中国四川与甘肃交界地区的具游离末轮的新种：西华师大假拟锥螺 Pseudobuliminus xihuashida Z.-G. Chen & Z.-Y. Chen, n. sp.  该物种可依据以下特征与所有同属种区分：贝壳呈圆柱形，表面光滑，末端0.5至1个壳层游离；螺层初期具弱龙骨，随后逐渐变圆润；胎壳具有细小结节。

Key words. Land snails, taxonomy, dry-hot river valley, new species, biodiversity

关键词：陆生贝类，分类学，干热河谷，新物种，生物多样性