5-424: Dicrostonyx groenlandicus Dicrostonyx hudsonius Dicrostonyx nelsoni Dicrostonyx nunatakensis Dicrostonyx richardsoni Dicrostonyx torquatus Dicrostonyx unalascensis Dicrostonyx is a genus of rodent in the family Cricetidae . It contains the collared lemmings or varying lemmings . They are the only North American rodents that turn completely white in winter. It contains
10-463: A thin black stripe along its back and light grey underparts. It has small ears, short legs and a very short tail. It has a pale brown collar across its chest. In winter, its fur turns white, and it has large digging claws on its front feet. It is 14 cm (5.5 in) long with a 1.5 cm (0.59 in) tail and weighs about 40 g (1 oz). It is found in the tundra of northern Canada , Alaska and Greenland . A disjunct population
15-607: Is also present on Wrangel Island in Siberia ; this population was formerly considered its own species, the Wrangel lemming ( D. vinogradovi ). It feeds on grasses , sedges and other green vegetation in summer, and twigs of willow , aspen and birches in winter. Predators include snowy owls , gulls , wolverines , the Arctic fox and the polar bear . Female lemmings have two or three litters of four to eight young in
20-666: The Peary Land collared lemming in Canada , is a small lemming found in Arctic North America and Wrangel Island . At one time, it was considered to be a subspecies of the Arctic lemming ( Dicrostonyx torquatus ). Some sources believe several other species of collared lemmings found in North America are actually subspecies of D. groenlandicus . It has a short chunky body covered with thick grey fur with
25-457: The following species : [REDACTED] [REDACTED] [REDACTED] [REDACTED] This Arvicolinae article is a stub . You can help Misplaced Pages by expanding it . Dicrostonyx groenlandicus kilangmiutak Anderson & Rand, 1945 rubricatus (Richardson, 1889) vinogradovi Ognev , 1948 The northern collared lemming or Nearctic collared lemming ( Dicrostonyx groenlandicus ), sometimes called
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