Subspecies and Distribution. O.h.hyperboreaPallas,1811—ChukchiPeninsulaandislandsintheBeringStrait(ArakamchechenandYttyrganIs),extremeNERussianFarEast. O.h.cinereoflavaSchrenk,1858—Aldanskyuplands,EpartofStanovoyRangeandDzhugdzhurMts,CRussianFarEast. O.h.cinereofuscaSchrenk,1858—SWoftherange,fromSayanMts,Tuva,andKhangaiUplandthroughBaikalregionEtoZeyaRiverinSRussiaandNMongolia. O.h.ferrugineaSchrenk,1858—NEoftherangeinNERussia,CherskogoandSuntar-Hayataranges,Kolymskoye,Anadyr,andKoryakuplands,KamchatkaPeninsula,andYakutia;alsoinsmallcoastalislandsoftheSeaofOkhotsk(ZavyalovaI). O.h.naumoviFormozov&Yakhontov,2003—fromPutoranaPlateautoVerkhoyanskRangeandAldanRiver,NCRussia. O.h.uralensisFlerov,1927—NofUralMts,WRussia. O.h.yesoensisKishida,1930—Hokkaido(NJapan). O. h. yoshikura: Kishida, 1932 — Russian Primorye and the left bank of Amur River E than Zeya River on the mainland and Sakhalin I, S Russian Far East. in Ochotonidae

Subspecies and Distribution. O.h.hyperboreaPallas,1811—ChukchiPeninsulaandislandsintheBeringStrait(ArakamchechenandYttyrganIs),extremeNERussianFarEast. O.h.cinereoflavaSchrenk,1858—Aldanskyuplands,EpartofStanovoyRangeandDzhugdzhurMts,CRussianFarEast. O.h.cinereofuscaSchrenk,1858—SWoftherange,fromSayanMts,Tuva,andKhangaiUplandthroughBaikalregionEtoZeyaRiverinSRussiaandNMongolia. O.h.ferrugineaSchrenk,1858—NEoftherangeinNERussia,CherskogoandSuntar-Hayataranges,Kolymskoye,Anadyr,andKoryakuplands,KamchatkaPeninsula,andYakutia;alsoinsmallcoastalislandsoftheSeaofOkhotsk(ZavyalovaI). O.h.naumoviFormozov&Yakhontov,2003—fromPutoranaPlateautoVerkhoyanskRangeandAldanRiver,NCRussia. O.h.uralensisFlerov,1927—NofUralMts,WRussia. O.h.yesoensisKishida,1930—Hokkaido(NJapan). O. h. yoshikura: Kishida, 1932 — Russian Primorye and the left bank of Amur River E than Zeya River on the mainland and Sakhalin I, S Russian Far East.