Cricetulus tibetanus

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Cricetulus tibetanus
Systematics
Superfamily : Mice-like (Muroidea)
Family : Burrowers (Cricetidae)
Subfamily : Hamster (Cricetinae)
Genre : Gray hamster ( Cricetulus )
Subgenus : Tibetan dwarf hamsters ( Urocricetus )
Type : Cricetulus tibetanus
Scientific name
Cricetulus tibetanus
Thomas & Hinton , 1922

Cricetulus tibetanus is a type of hamster belongingto the Tibetan dwarf hamsters . Usually it is assigned to the Kham dwarf hamster or the Ladakh dwarf hamster . He lives in the east of the Tibetan Plateau in China .

Body features

The head-trunk length of Cricetulus tibetanus is about 103 millimeters, the tail length 30 to 37 millimeters, the hind foot length 17 to 18 millimeters and the ear length 15 to 16 millimeters. The largest skull length is 23.5 to 25.4 millimeters.

The fur on the top is almost monotonous ocher in color and merges into a lighter sand color towards the forehead, cheeks and neck . The auricles are colored in a contrasting dark brown and have a narrow white border at the tip and a small tuft of white hair at the base. The underside is white, the tail is two-colored, dark on top and pure white on the underside, and the top of the paws is also white.

Cricetulus tibetanus differs from the Kham dwarf hamster in that its tail is less than five centimeters long and the hips are not blackened. It shares these characteristics with the Ladakh dwarf hamster, the Tibetan dwarf hamster and the gray dwarf hamster . Together with the last two species mentioned, it differs from the Ladakh dwarf hamster in the lack of pronounced folds in the first upper molar tooth . It differs from the Tibetan dwarf hamster in that its tail is less than four centimeters long. It has this characteristic in common with the gray dwarf hamster and differs from it in the short, dark brown auricles with a white rim.

Way of life, distribution and existence

Cricetulus tibetanus (China)
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Locations of Cricetulus tibetanus :
  • red: location of the type specimen
  • black: further locations

The way of life of Cricetulus tibetanus is thought to be similar to that of the Kham dwarf hamster. Its distribution area is the central south of Qinghai and the center of Tibet . It is endemic to China . The International Union for Conservation of Nature does not have sufficient data on the population.

Systematics and naming

Thomas and Hinton (1922) and Ellerman (1947) assign the form as a subspecies to the Ladakh dwarf hamster. Wang and Zheng (1973), on the other hand, assign them to the Kham dwarf hamster and most of the other classifications follow this assignment (Corbet, 1978; Honacki and co-workers, 1982; Musser and Carleton, 1993, 2005). Smith and Hoffmann (2008) list Cricetulus tibetanus as a separate species.

The type specimen was founded in 1921 on the first British Mount Everest Expedition in Tingri found in Tibet at an altitude of about 4300 meters and 1922 by Oldfield Thomas and Martin AC Hinton as Cricetulus alticola tibetanus described .

literature

Further reading:

  • Oldfield Thomas, Martin AC Hinton: The mammals of the 1921 Mount Everest expedition . In: Annals and Magazine of Natural History. Series 9 . tape 9 , 1922, pp. 178-186 (English).

Mainly used literature:

  • James H. Honacki, Kenneth E. Kinman, James W. Koeppl (Eds.): Mammal Species of the World . A Taxonomic and Geographic Reference . Allen Press / Association of Systematics Collections, Lawrence (Kansas) 1982, ISBN 0-942924-00-2 (English).
  • Andrew T. Smith, Robert S. Hoffmann: Subfamily Cricetinae . In: Andrew T. Smith, Xie Yan (Eds.): A Guide to the Mammals of China . Princeton University Press, Princeton / Oxford 2008, ISBN 978-0-691-09984-2 , pp. 239-247 (English).

Individual evidence

  1. ↑ a b c d e Smith and Hoffmann, 2008 (p. 245).
  2. ^ Smith and Hoffmann, 2008 (p. 242).
  3. ↑ Wang Sung, Xie Yan (Eds.): [China Species Red List. Volume 1: Red List] . Higher Education Press, Beijing 2004 (Chinese). → Quoted in: Smith and Hoffmann, 2008 (p. 245).
  4. ^ John Reeves Ellerman: A key to the Rodentia inhabiting India, Ceylon, and Burma (based on collections in the British Museum). Part II . In: Journal of Mammology . tape 28 , no. 4 , ISSN  0022-2372 , p. 357–387 , JSTOR : 1375359 (English, excerpt, full text requires a license).
  5. ↑ Wang Sung, Zheng Chang-Lin: [Notes on Chinese Hamsters (Cricetinae)] . In: Acta Zoologica Sinica . tape 19 , 1973, ISSN  0001-7302 , pp. 61-68 (Chinese). → Quoted in: Honacki and co-workers, 1982 (p. 406).
  6. ^ Gordon Barclay Corbet: The Mammals of the Palaearctic Region. A Taxonomic Review . British Museum (Natural History) / Cornell University Press, London 1978, ISBN 0-8014-1171-8 , pp. 91 (English). → Quoted in: Honacki and co-workers, 1982 (p. 406).
  7. ^ Honacki et al. (P. 405).
  8. ↑ Guy G. Musser, Michael D. Carleton: Family Muridae . In: Don E. Wilson, DeeAnn M. Reeder (Eds.): Mammal Species of the World . A Taxonomic and Geographic Reference . 2nd Edition. Smithsonian Institution Press, Washington 1993, ISBN 1-56098-217-9 , pp. 537 (English).
  9. ↑ Guy G. Musser, Michael D. Carleton: Superfamily Muroidea . In: Don E. Wilson, DeeAnn M. Reeder (Eds.): Mammal Species of the World . A Taxonomic and Geographic Reference . 3. Edition. Johns Hopkins University Press, Baltimore 2005, ISBN 0-8018-8221-4 , pp. 1042 (English, bucknell.edu - full text of the compilation).
  10. ↑ Thomas and Hinton, 1922. → Quoted in: Smith and Hoffmann, 2008 (p. 245).

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