Collared lemming

Collared lemmings; Temporal range: Early Pleistocene to Recent
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Rodentia
Family:	Cricetidae
Subfamily:	Arvicolinae
Tribe:	Dicrostonychini
Genus:	Dicrostonyx; Gloger, 1841
Type species
	Mus hudsonius; Pallas, 1778
Species
	Dicrostonyx groenlandicus; Dicrostonyx hudsonius; Dicrostonyx nelsoni; Dicrostonyx nunatakensis; Dicrostonyx richardsoni; Dicrostonyx torquatus; Dicrostonyx unalascensis

Dicrostonyx is a genus of rodent in the family Cricetidae.¹ It contains the collared lemmings or varying lemmings. They are the only North American rodents that turn completely white in winter.² It contains the following species:

Northern collared lemming (Dicrostonyx groenlandicus)
Ungava collared lemming (Dicrostonyx hudsonius)
Nelson's collared lemming (Dicrostonyx nelsoni)
Ogilvie Mountains collared lemming (Dicrostonyx nunatakensis)
Richardson's collared lemming (Dicrostonyx richardsoni)
Arctic lemming (Dicrostonyx torquatus)
Unalaska collared lemming (Dicrostonyx unalascensis)

References

Musser, G. G.; Carleton, M. D. (2005). "Genus Dicrostonyx". In Wilson, D. E.; Reeder, D. M. (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. pp. 970–973. ISBN 978-0-8018-8221-0. OCLC 62265494.
"Dicrostonyx groenlandicus, Bering collared lemming". Animal Diversity Web. Retrieved 19 April 2016.

[MSW3-1] Musser, G. G.; Carleton, M. D. (2005). "Genus Dicrostonyx". In Wilson, D. E.; Reeder, D. M. (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. pp. 970–973. ISBN 978-0-8018-8221-0. OCLC 62265494.

[2] "Dicrostonyx groenlandicus, Bering collared lemming". Animal Diversity Web. Retrieved 19 April 2016.

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