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普缨婷, 万韬, 范荣辉, 付长坤, 唐刻意, 蒋学龙, 张保卫, 胡婷丽, 陈顺德, 刘少英. 2022: 中国重庆发现猪尾鼠属(啮齿目:刺山鼠科)一新种. 动物学研究, 43(3): 413-417. DOI: 10.24272/j.issn.2095-8137.2021.338
引用本文: 普缨婷, 万韬, 范荣辉, 付长坤, 唐刻意, 蒋学龙, 张保卫, 胡婷丽, 陈顺德, 刘少英. 2022: 中国重庆发现猪尾鼠属(啮齿目:刺山鼠科)一新种. 动物学研究, 43(3): 413-417. DOI: 10.24272/j.issn.2095-8137.2021.338
Ying-Ting Pu, Tao Wan, Rong-Hui Fan, Chang-Kun Fu, Ke-Yi Tang, Xue-Long Jiang, Bao-Wei Zhang, Ting-Li Hu, Shun-De Chen, Shao-Ying Liu. 2022: A new species of the genus Typhlomys Milne-Edwards, 1877 (Rodentia: Platacanthomyidae) from Chongqing, China. Zoological Research, 43(3): 413-417. DOI: 10.24272/j.issn.2095-8137.2021.338
Citation: Ying-Ting Pu, Tao Wan, Rong-Hui Fan, Chang-Kun Fu, Ke-Yi Tang, Xue-Long Jiang, Bao-Wei Zhang, Ting-Li Hu, Shun-De Chen, Shao-Ying Liu. 2022: A new species of the genus Typhlomys Milne-Edwards, 1877 (Rodentia: Platacanthomyidae) from Chongqing, China. Zoological Research, 43(3): 413-417. DOI: 10.24272/j.issn.2095-8137.2021.338

中国重庆发现猪尾鼠属(啮齿目:刺山鼠科)一新种

A new species of the genus Typhlomys Milne-Edwards, 1877 (Rodentia: Platacanthomyidae) from Chongqing, China

  • 摘要: 结合形态及分子分类学方法,依据采自重庆奉节的10号标本描述了猪尾鼠属(啮齿目:刺山鼠科)一新物种——白帝猪尾鼠(Typhlomys fengjiensis sp. nov. )。分子分析结果显示新种为属内一单独的支系,是大娄山猪尾鼠(T. daloushanensis)的姐妹种,与属内其他物种间存在较大的遗传差异(遗传距离在0.122至0.215之间)。形态上,新种与其姐妹种最为相似,但仍能从以下特征进行区分:(1)新种的体型及头骨更大;(2)具有深度向内弯折的颧弓;(3)上第一臼齿具有开放的中沟,在唇侧和舌侧均开口使其贯穿整个齿面,而大娄山猪尾鼠上第一臼齿中沟为半封闭状态,仅在唇侧开口。新种的发现提示中国南部地区猪尾鼠属的物种多样性可能仍被低估。

     

    Abstract: A new species of the genus Typhlomys Milne-Edwards, 1877 (Rodentia: Platacanthomyidae) is described based on 10 specimens collected from Chongqing in southwestern China using integrated taxonomy. Phylogenetic analysis showed that these specimens formed a distinct sister clade to T. daloushanensis Wang and Li, 1996, and differed from all six known Typhlomys species based on Kimura-2-parameter genetic distances of the cytochrome b (cyt b) gene (ranging from 0.122 to 0.215). The new species Typhlomys fengjiensis sp. nov. is most similar to T. daloushanensis in morphology. However, it differs from the latter by the following morphological characters: (1) larger body and skull; (2) deeper incurved zygomatic arch; and (3) mesofossette on first upper molar open on both buccal and lingual sides (vs. inner edge of endoloph closed in T. daloushanensis). The discovery of this new species supports that Typhlomys diversity remains underestimated in southern China.

     

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