''Dicrostonyx'' is a
genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...
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 contains the collared lemmings or varying lemmings. They are the only
North America
North America is a continent in the Northern Hemisphere, Northern and Western Hemisphere, Western hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South Ameri ...
n rodents that turn completely white in winter.
It contains the following
species
A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...
:
*
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
Dicrostonyx
Taxa named by C. L. Gloger
Taxonomy articles created by Polbot
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