The Sikkim mountain vole (''Neodon sikimensis'') is a species of

rodent Rodents (from Latin , 'to gnaw') are mammals of the Order (biology), order Rodentia ( ), which are characterized by a single pair of continuously growing incisors in each of the upper and Mandible, lower jaws. About 40% of all mammal specie ...

in the family

Cricetidae The Cricetidae are a family of rodents in the large and complex superfamily Muroidea. It includes true hamsters, voles, lemmings, muskrats, and New World rats and mice. At over 870 species, it is either the largest or second-largest family ...

. It is found in

Bhutan Bhutan, officially the Kingdom of Bhutan, is a landlocked country in South Asia, in the Eastern Himalayas between China to the north and northwest and India to the south and southeast. With a population of over 727,145 and a territory of , ...

India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...

Nepal Nepal, officially the Federal Democratic Republic of Nepal, is a landlocked country in South Asia. It is mainly situated in the Himalayas, but also includes parts of the Indo-Gangetic Plain. It borders the Tibet Autonomous Region of China Ch ...

and

China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...

Description

The Sikkim mountain vole has a head-and-body length of between and a tail length of . The dorsal fur is dark brown, the underparts are dark grey and there is an intermediate strip of ochre-brown where the two colours meet. The upper surface of both fore and hind feet are brownish-white and the tail is bicoloured, being brown above and white below. The Sikkim mountain vole is very similar in appearance to the Chinese scrub vole (''Neodon irene'') although the two can be distinguished by examination of their teeth.

Distribution and habitat

The Sikkim mountain vole is native to parts of southeastern Asia. Its range extends from

West Bengal West Bengal (; Bengali language, Bengali: , , abbr. WB) is a States and union territories of India, state in the East India, eastern portion of India. It is situated along the Bay of Bengal, along with a population of over 91 million inhabi ...

and

Sikkim Sikkim ( ; ) is a States and union territories of India, state in northeastern India. It borders the Tibet Autonomous Region of China in the north and northeast, Bhutan in the east, Koshi Province of Nepal in the west, and West Bengal in the ...

in India, through western, central and eastern

at altitudes above , and it is also present in southern

Tibet Autonomous Region The Tibet Autonomous Region (TAR), often shortened to Tibet in English or Xizang in Pinyin, Hanyu Pinyin, is an Autonomous regions of China, autonomous region of the China, People's Republic of China. It was established in 1965 to replace the ...

at altitudes between . Its typical habitat is Alpine meadows, rough herbage, forest edges and clearings.

Status

The Sikkim mountain vole has a wide range and is assumed to have a large total population. It is present in several protected areas including

Langtang National Park Langtang National Park is a national park in north-central Nepal. It was established in 1976 as Nepal's first Himalayan national park and the country's fourth protected area. It covers an area of in the Nuwakot, Rasuwa and Sindhulpalchok Dist ...

and

Khangchendzonga National Park Khangchendzonga National Park, also Kanchenjunga Biosphere Reserve, is a national park and a biosphere reserve located in Sikkim, India. It was inscribed to the UNESCO World Heritage Sites list in July 2016, becoming the first " Mixed Heritage" ...

. The population trend is unknown, but the vole is threatened by the disappearance of areas of suitable habitat, by the arrival of invasive species and by the predation of domestic dogs and cats. The

International Union for Conservation of Nature The International Union for Conservation of Nature (IUCN) is an international organization working in the field of nature conservation and sustainable use of natural resources. Founded in 1948, IUCN has become the global authority on the stat ...

has assessed its conservation status as being of "

least concern A least-concern species is a species that has been evaluated and categorized by the International Union for Conservation of Nature (IUCN) as not being a focus of wildlife conservation because the specific species is still plentiful in the wil ...

References

*Musser, G. G. and M. D. Carleton. 2005. Superfamily Muroidea. pp. 894–1531 ''in'' Mammal Species of the World a Taxonomic and Geographic Reference. D. E. Wilson and D. M. Reeder eds. Johns Hopkins University Press, Baltimore. {{Taxonbar, from=Q1764961 Neodon Rodents of Asia Fauna of the Himalayas Mammals of Bhutan Rodents of China Rodents of India Mammals of Nepal Fauna of Tibet Western Himalayan broadleaf forests Mammals described in 1841 Taxonomy articles created by Polbot