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Zoological Research
Kunming Institute of Zoology, Chinese Academy of Sciences
ISSN: 2095-8137
Vol. 39, No. 5, 2018, pp. 335-347
Bioline Code: zr18032
Full paper language: English
Document type: Research Article
Document available free of charge

Zoological Research, Vol. 39, No. 5, 2018, pp. 335-347

 en Taxonomic revision of the genus Mesechinus check for this species in other resources (Mammalia: Erinaceidae) with description of a new species
Ai, Huai-Sen; He, Kai; Chen, Zhong-Zheng; Li, Jia-Qi; Wan, Tao; Li, Quan; Nie, Wen-Hui; Wang, Jin-Huan; Su, Wei-Ting & Jiang, Xue-Long

Abstract

Hedgehogs in the genus Mesechinus (Family Erinaceidae), which include two currently recognized species ( M. dauuricus check for this species in other resources and M. hughi check for this species in other resources ), are distributed from northeast Mongolia to the upper Amur Basin in Russia and adjacent areas in northeast and northern China. In recent years, a population of Mesechinus hedgehogs was discovered from Mt. Gaoligong, southwestern Yunnan, China, far from the known distribution range of the genus. Furthermore, these hedgehogs are the only known population to be distributed at elevations higher than 2 100 m and in sympatry with gymnures. To evaluate the taxonomic status of these hedgehogs, we examined specimens representing Mesechinus taxa in China and further conducted morphometric and karyotypic analyses. Our results supported the existence of four species in China. Specifically, we identified the hedgehogs from Mt. Gaoligong as a new species, Mesechinus wangi sp. nov., and recognized M. miodon, previously considered as a synonym of either M. dauuricus or M. hughi, as a distinct species. Interestingly, we observed a supernumerary M4 on all specimens of Mesechinus wangi sp. nov., which is an extremely rare event in the evolution of mammalian dentition.

Keywords
Mesechinus; Taxonomy; Morphometrics; Inhibitory cascade; Karyotype; New species; Supernumerary molar

 
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