''Dicrostonyx'' is a genus of

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

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 almost 608 species, it is the second-largest family of mammals, and has m ...

. It contains the collared lemmings. They are the only North American rodents that turn completely white in winter. It contains the following species: *

Northern collared lemming The northern collared lemming or Nearctic collared lemming (''Dicrostonyx groenlandicus''), sometimes called the Peary Land collared lemming in Canada, is a small lemming found in Arctic North America and Wrangel Island. At one time, it was consi ...

(''Dicrostonyx groenlandicus'') *

Ungava collared lemming The Ungava collared lemming or Labrador collared lemming (''Dicrostonyx hudsonius'') is a small North American lemming. This species has a short, chunky body covered with brownish-grey fur, with a thin dark stripe along the back and a yellow li ...

(''Dicrostonyx hudsonius'') * Nelson's collared lemming (''Dicrostonyx nelsoni'') *

Ogilvie Mountains collared lemming The Ogilvie Mountains collared lemming (''Dicrostonyx nunatakensis'') is a species of rodent in the family Cricetidae. It is found only in Yukon Territory, Canada.Musser, G. G. and M. D. Carleton. (2005). Superfamily Muroidea. Pp. 894-1531 ''in'' ...

(''Dicrostonyx nunatakensis'') *

Richardson's collared lemming The Richardson's collared lemming (''Dicrostonyx richardsoni'') is a small North American lemming. At one time, they were considered to be a subspecies of the Arctic lemming, ''Dicrostonyx torquatus''. Some sources believe they are a subspecies ...

(''Dicrostonyx richardsoni'') *

Arctic lemming The Arctic lemming (''Dicrostonyx torquatus'') is a species of rodent in the family Cricetidae. Although generally classified as a "least concern" species, the Novaya Zemlya subspecies ''(Dicrostonyx torquatus ungulatus)'' is considered a vulner ...

(''Dicrostonyx torquatus'') *

Unalaska collared lemming The Unalaska collared lemming (''Dicrostonyx unalascensis'') is a species of rodent in the family Cricetidae. This species is found on two islands, Umnak and Unalaska, in the Aleutian Archipelago of Alaska in the United States. Its natural habita ...

(''Dicrostonyx unalascensis'')

References

Dicrostonyx Taxa named by C. L. Gloger Taxonomy articles created by Polbot {{Arvicolinae-stub