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Africa Northern Africa Algeria Morocco Asia-Temperate Caucasus North Caucasus Transcaucasus China Xinjiang Middle Asia Kazakhstan Kirgizistan Tadzhikistan Uzbekistan Siberia Altay West Siberia Western Asia Iran Turkey Europe Eastern Europe Baltic States Belarus Central European Russia East European Russia Krym North European Russia South European Russia Ukraine Middle Europe Austria Belgium Czechoslovakia Germany Hungary Netherlands Poland Switzerland Northern Europe Denmark Finland Great Britain Ireland Norway Sweden Southeastern Europe Albania Bulgaria Greece Italy Romania Sicilia Yugoslavia Southwestern Europe France Portugal Spain Introduced into Northern America Eastern Canada New Brunswick Nova Scotia Ontario Prince Edward I. Québec North-Central U.S.A. Illinois Iowa Kansas Minnesota Missouri Nebraska North Dakota South Dakota Wisconsin Northeastern U.S.A. Connecticut Indiana Maine Masachusettes Michigan New Hampshire New Jersey New York Ohio Pennsylvania Rhode I. Vermont West Virginia Northwestern U.S.A. Colorado Idaho Montana Washington Wyoming Southeastern U.S.A. Delaware Kentucky Maryland North Carolina Tennessee Virginia Southwestern U.S.A. Arizona Utah Western Canada Alberta Manitoba Saskatchewan Southern America Southern South America Argentina Northeast