Doubtfully present in:
Greece,
Romania
Native to:
Afghanistan,
Alaska,
Alberta,
Aleutian Is.,
Algeria,
Altay,
Amur,
Argentina Northwest,
Assam,
Austria,
Baltic States,
Belarus,
Belgium,
Bolivia,
Borneo,
British Columbia,
Bulgaria,
Buryatiya,
California,
Central European Russia,
China North-Central,
China South-Central,
China Southeast,
Chita,
Colorado,
Connecticut,
Corse,
Czechoslovakia,
Delaware,
Denmark,
District of Columbia,
East European Russia,
Ecuador,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Greenland,
Iceland,
Idaho,
Illinois,
India,
Inner Mongolia,
Iran,
Ireland,
Irkutsk,
Italy,
Japan,
Kamchatka,
Kazakhstan,
Kentucky,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Kuril Is.,
Labrador,
Magadan,
Maine,
Malaya,
Manchuria,
Manitoba,
Maryland,
Massachusetts,
Mexico Central,
Mexico Northeast,
Mexico Southeast,
Mexico Southwest,
Michigan,
Minnesota,
Missouri,
Mongolia,
Montana,
Nepal,
Netherlands,
New Brunswick,
New Guinea,
New Hampshire,
New Jersey,
New York,
Newfoundland,
North Carolina,
North Caucasus,
North European Russia,
Northwest European Russia,
Northwest Territories,
Norway,
Nova Scotia,
Nunavut,
Ohio,
Ontario,
Oregon,
Pakistan,
Pennsylvania,
Peru,
Philippines,
Poland,
Portugal,
Primorye,
Prince Edward I.,
Qinghai,
Québec,
Rhode I.,
Sakhalin,
Saskatchewan,
South Carolina,
Spain,
Sulawesi,
Sumatera,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Tennessee,
Thailand,
Tibet,
Transcaucasus,
Tuva,
Ukraine,
Utah,
Uzbekistan,
Vermont,
Vietnam,
Virginia,
Washington,
West Himalaya,
West Siberia,
West Virginia,
Wisconsin,
Xinjiang,
Yakutskiya,
Yugoslavia,
Yukon
Extinct in:
Hungary,
Sri Lanka