Tscherskia ningshaanensis: A neglected species based on phylogenetic and taxonomic analysis of Tscherskia and Cansumys (Cricetidae, Rodentia)

By

Jiang, Haijun
Wang, Xuming
Yang, Yaohua
Pan, Xuan
Liu, Shaoying
Lu, Jiqi

Type

Article

Date of Publication

2024-9-2

Original Publication

Zoosystematics and evolution

Volume

100

Series / Issue

Issue: 4

Pages

1231--1241

Subjects

Classification , Morphology , Mt. Qinling , Phylogeny , Rodentia , Tscherskia

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia Pensoft

Identifiers

DOI: https://doi.org/10.3897/zse.100.128567

 

Abstract

The greater long-tailed hamster is primarily distributed in North Korea, Siberia (Russia), and central and northern China, while the Gansu hamster is restricted to southern Gansu Province, China. The genera Tscherskia and Cansumys have each been considered monotypic. The taxonomic status of these two genera has long been debated, and the specific status of T. ningshaanensis has also been contentious. Researchers have variously treated T. ningshaanensis as a subspecies of either T. triton or Can. canus. In this study, we estimated the phylogeny, divergence times, species delimitation, and biogeographical history of T. ningshaanensis by using one mitochondrial (CYT B) and three nuclear loci (GHR, IRBP, and RAG1) and compared the external and skull morphology variations between T. ningshaanensis and T. triton. The results showed that: 1) The genus Cansumys is a distinct genus in Cricetinae; 2) The notion that the genus Tscherskia is a monotypic genus is unsupported, T. ningshaanensis and T. triton were identified within this genus; and 3) The formation of T. ningshaanensis may have been driven by uplift of the Qinling Mountains. We conclude that T. ningshaanensis is a valid species within the subfamily Cricetinae.