Native to:
Afghanistan,
Alaska,
Alberta,
Aleutian Is.,
Altay,
Amur,
Angola,
Antipodean Is.,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Austria,
Baltic States,
Belarus,
Belgium,
Bolivia,
Botswana,
Brazil South,
British Columbia,
Bulgaria,
Buryatiya,
California,
Cameroon,
Cape Provinces,
Central European Rus,
Chile Central,
Chile North,
Chile South,
China South-Central,
China Southeast,
Chita,
Colombia,
Colorado,
Connecticut,
Costa Rica,
Crozet Is.,
Cyprus,
Czechoslovakia,
Denmark,
Dominican Republic,
East European Russia,
Ecuador,
Egypt,
Eritrea,
Ethiopia,
Falkland Is.,
Finland,
France,
Free State,
Germany,
Great Britain,
Greece,
Greenland,
Guatemala,
Gulf of Guinea Is.,
Hungary,
Iceland,
Idaho,
Inner Mongolia,
Ireland,
Irkutsk,
Italy,
Japan,
Kamchatka,
Kazakhstan,
Kenya,
Kerguelen,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Krym,
Kuril Is.,
KwaZulu-Natal,
Labrador,
Lebanon-Syria,
Lesotho,
Magadan,
Maine,
Malawi,
Mali,
Manchuria,
Manitoba,
Marion-Prince Edward,
Maryland,
Massachusetts,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Minnesota,
Missouri,
Mongolia,
Montana,
Morocco,
Mozambique,
Namibia,
Nebraska,
Nepal,
Netherlands,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New South Wales,
New York,
New Zealand North,
New Zealand South,
Newfoundland,
North Carolina,
North Caucasus,
North Dakota,
North European Russi,
Northern Provinces,
Northern Territory,
Northwest European R,
Northwest Territorie,
Norway,
Nova Scotia,
Nunavut,
Ontario,
Oregon,
Pennsylvania,
Peru,
Poland,
Portugal,
Primorye,
Prince Edward I.,
Qinghai,
Queensland,
Québec,
Rhode I.,
Romania,
Rwanda,
Sakhalin,
Saskatchewan,
South Australia,
South Dakota,
South European Russi,
Spain,
Sweden,
Switzerland,
Tadzhikistan,
Tanzania,
Tasmania,
Tibet,
Transcaucasus,
Turkey,
Uganda,
Ukraine,
Utah,
Venezuela,
Victoria,
Virginia,
Washington,
West Himalaya,
West Siberia,
Western Australia,
Wyoming,
Xinjiang,
Yakutskiya,
Yemen,
Yugoslavia,
Yukon,
Zambia,
Zaïre,
Zimbabwe
Extinct in:
Delaware