Dicrostonyx nelsoni
| Nelson's Collared Lemming
(Dicrostonyx nelsoni) | |
|---|---|
| Range | |
 | |
| Taxonomic classification | |
| Order: | Rodentia |
| Suborder: | Supramyomorpha |
| Infraorder: | Myomorphi |
| Superfamily: | Muroidea |
| Family: | Cricetidae |
| Subfamily: | Arvicolinae |
| Tribe: | Dicrostonychini |
| Genus: | Dicrostonyx |
| Subgenus: | Dicrostonyx (subgenus) |
| Binomial details | |
| Dicrostonyx nelsoni Merriam, 1900 | |
| Other resources | |
| Full taxonomic details at MDD | |
Description
From Wilson et al. (2017): “Nelson's Collared Lemming is stocky, with relatively short limbs and tail. It is seasonally dimorphic, white in winter and grayish brown in summer. There is usually a reddish collar in summer.”
Members of Dicrostonyx are the only rodents in North America that turn white in winter.
External measurements
No results found.
Skull
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Lateral view of the skull of Dicrostonyx nelsoni. -
Dorsal view of the skull of Dicrostonyx nelsoni. -
Ventral view of the skull of Dicrostonyx nelsoni. -
The upper incisors of Dicrostonyx nelsoni lack grooves. -
Upper molars of Dicrostonyx nelsoni. M1 and M2 usually terminate with a narrow lingual and labial loop. -
Lower molars of Dicrostonyx nelsoni. Second and third lower molars (m2 and m3) typically begin with narrow loops.
References
Merriam CH. 1900-03-14. Papers from the Harriman Alaska Expedition. I. Descriptions of twenty-six new mammals from Alaska and British North America. Proceedings of the Washington Academy of Sciences 2:13-30.
Wilson DE, Mittermeier RA, Lacher Jr TE. 2017. Cricetidae. In: Handbook of the Mammals of the World – Volume 7 Rodents II. Barcelona: Lynx Edicions: 204-535, ISBN: 978-84-16728-04-6, DOI: 10.5281/zenodo.6707142