Microtus oeconomus (Pallas, 1776)

Species diagnosis

General Characteristics

M2 with 4 closed triangles and no posterior loop
m1 with four closed triangles, the fifth triangle being open and confluent with the anterior loop

Alaska subspecies

Subspecies	Type Locality
Microtus oeconomus amakensis O. J. Murie	Amak Island, Bering Sea
Microtus oeconomus elymocetes Osgood	E side Montague Island, Prince William Sound
Microtus oeconomus gilmorei Setzer	Point Lay, 69 46'N 163 04'W
Microtus oeconomus innuitis Merriam	Northeast Cape, St Lawrence Island
Microtus oeconomus kadiacensis Merriam	Kodiak Island
Microtus oeconomus macfarlani Merriam
Microtus oeconomus operarius (Nelson)	St. Michael, Norton Sound
Microtus oeconomus popofensis Merriam	Popof Island, Shumagin Islands
Microtus oeconomus punukensis Hall and Gilmore	Big Punuk Island, near E end of St. Lawrence Island
Microtus oeconomus sitkensis Merriam	Sitka
Microtus oeconomus unalascensis Merriam	Unalaska
Microtus oeconomus yakutatensis Merriam	N shore Yakutat Bay