Sorex (Otisorex) ugyunak Anderson and Rand 1945

Sorex (Otisorex) ugyunak Anderson and Rand 1945, Canadian Field Nat., 59: 62.

Type Locality: "Tuktuk (Tuktuyaktok), northeast side of Mackenzie River delta, south of Toker Point, Mackenzie District, Northwest Territories, Canada." .

Vernacular Names: Barren Ground Shrew.

Distribution: Mainland tundra west of Hudson Bay (Canada), and N Alaska (USA).

Conservation: IUCN – Lower Risk (lc).

Discussion: Subgenus Otisorex; S. cinereus group (Demboski and Cook, 2003). Karyotype has 2n = 60, FN = 62. Formerly included in cinereus, but van Zyll de Jong (1976, 1991 b) provided arguments for a specific destinction of ugyunak; genetically related to jacksoni, portenkoi, camtschatica, and pribilofensis (Demboski and Cook, 2003) . See Junge and Hoffmann (1981) and van Zyll de Jong (1983 a, and in Wilson and Ruff, 1999) for further information.