New records of the Ogilvie Mountains Collared Lemming (Dicrostonyx nunatakensis) in central Yukon


  • Thomas S. Jung Yukon Department of Environment, Box 2703, Whitehorse, Yukon Y1A 2C6
  • Brian G. Slough 35 Cronkhite Road, Whitehorse, Yukon Y1A 5S9
  • David W. Nagorsen Mammalia Biological Consulting, Victoria, British Columbia V9C 3Z4
  • Piia M. Kukka Yukon Department of Environment, Box 2703, Whitehorse, Yukon Y1A 2C6



Ogilvie Mountain Collared Lemming, Dicrostonyx nunatakensis, distribution, Tombstone Territorial Park, Yukon


The Ogilvie Mountain Collared Lemming (Dicrostonyx nunatakensis Youngman, 1967), reported only from the Ogilvie Mountains of central Yukon, is among the least known mammals in Canada. It was first discovered in 1961 and, since then, only 13 specimens had been collected, all from one mountain, in central Yukon. We conducted a targeted survey to determine the distribution of the species by trapping areas of apparently suitable habitat on 12 mountains within 40 km of the known location. Many of our traps were disabled by other mammals; however, we captured three Ogilvie Mountain Collared Lemmings on two mountains 25.9 km and 29.6 km from the original location. Our findings suggest that this lemming may be more widely distributed than indicated by earlier specimens. We suggest further surveys to delineate the range of the Ogilvie Mountain Collared Lemming.