Microtus nesophilus
Bailey 1898
Microtus pennsylvanicus pennsylvanicus
Ord 1815
Microtus pennsylvanicus dukecampbelli
Woods Post and Kilpatrick 1982
Microtus pennsylvanicus chihuahuensis
Bradley and Cockrum 1968
Microtus admiraltiae
Heller 1909
Arvicola alborufescens
Emmons 1840
Microtus aphorodemus
Preble 1902
Arvicola dekayi
Audubon and Bachman 1854
Microtus enixus
Bangs 1896
Microtus fontigenus
Bangs 1896
Arvicola fulva
Audubon and Bachman 1841
Arvicola hirsutus
Emmons 1840
Arvicola insperatus
J A Allen 1894
Microtus insularis
Bailey 1898
Arvicola nasuta
Audubon and Bachman 1841
Lemmus noveboracensis
Rafinesque 1820
Arvicola oneida
DeKay 1842
Arvicola palustris
Harlan 1825
Mynomes pratensis
Rafinesque 1817
Microtus provectus
Bangs 1908
Arvicola riparius
Ord 1825
Arvicola rufescens
DeKay 1842
Arvicola rufidorsum
Baird 1857
Arvicola terraenovae
Bangs 1894
Arvicola drummondii
Audubon and Bachman 1853
Microtus pennsylvanicus acadicus
Bangs 1897
Microtus pennsylvanicus alcorni
Baker 1951
Microtus pennsylvanicus arcticus
Cowan 1951
Microtus pennsylvanicus copelandi
Youngman 1967
Microtus pennsylvanicus finitus
S Anderson 1956
Microtus pennsylvanicus funebris
Dale 1940
Microtus montanus kincaidi
Dalquest 1941
Microtus pennsylvanicus labradorius
Bailey 1898
Arvicola riparia longipilis
Baird 1857
Microtus pennsylvanicus magdalenensis
Youngman 1967
Microtus pennsylvanicus pullatus
S Anderson 1956
Microtus pennsylvanicus rubidus
Dale 1940
Microtus pennsilvanicus shattucki
Howe 1901
Microtus pennsylvanicus tananaensis
Baker 1951
Microtus pennsylvanicus uligocola
S Anderson 1956
Microtus pennsylvanicus wahema
Bailey 1920
Microtus pennsylvanicus kincaidi
Dalquest 1941
Microtus pennsylvanicus provectus
Bangs 1908
Microtus pennsylvanicus shattucki
Howe 1901