Native to:
Alabama,
Alaska,
Albania,
Alberta,
Algeria,
Altay,
Amur,
Angola,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Assam,
Austria,
Azores,
Baleares,
Baltic States,
Bangladesh,
Belarus,
Belgium,
Benin,
Bermuda,
Bolivia,
Borneo,
Botswana,
Brazil South,
British Columbia,
Bulgaria,
Burkina,
Burundi,
Buryatiya,
California,
Cambodia,
Cameroon,
Canary Is.,
Caprivi Strip,
Central African Repu,
Central European Rus,
Chad,
Chile Central,
China North-Central,
China South-Central,
China Southeast,
Chita,
Colombia,
Colorado,
Congo,
Connecticut,
Corse,
Costa Rica,
Cuba,
Czechoslovakia,
Delaware,
Denmark,
District of Columbia,
Dominican Republic,
East Aegean Is.,
East European Russia,
Egypt,
El Salvador,
Eritrea,
Ethiopia,
Fiji,
Finland,
Florida,
France,
Free State,
Gabon,
Georgia,
Germany,
Ghana,
Great Britain,
Greece,
Guatemala,
Guinea-Bissau,
Haiti,
Honduras,
Hungary,
Idaho,
Illinois,
India,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Ivory Coast,
Jamaica,
Japan,
Jawa,
Kamchatka,
Kansas,
Kazakhstan,
Kentucky,
Kenya,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Kriti,
Krym,
Kuril Is.,
KwaZulu-Natal,
Lebanon-Syria,
Leeward Is.,
Lesser Sunda Is.,
Libya,
Louisiana,
Madagascar,
Madeira,
Magadan,
Maine,
Malawi,
Mali,
Maluku,
Manchuria,
Manitoba,
Marianas,
Maryland,
Massachusetts,
Mauritania,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Mongolia,
Montana,
Morocco,
Mozambique,
Myanmar,
Nansei-shoto,
Nebraska,
Netherlands,
Nevada,
New Brunswick,
New Guinea,
New Hampshire,
New Jersey,
New Mexico,
New York,
Nicaragua,
Nicobar Is.,
Nigeria,
North Carolina,
North Caucasus,
North Dakota,
North European Russi,
Northwest European R,
Northwest Territorie,
Norway,
Nova Scotia,
Ohio,
Oklahoma,
Oman,
Ontario,
Oregon,
Palestine,
Panamá,
Paraguay,
Pennsylvania,
Philippines,
Poland,
Portugal,
Primorye,
Prince Edward I.,
Puerto Rico,
Queensland,
Québec,
Rhode I.,
Romania,
Rwanda,
Sakhalin,
Samoa,
Sardegna,
Saskatchewan,
Senegal,
Sicilia,
Solomon Is.,
South Carolina,
South Dakota,
South European Russi,
Spain,
Sri Lanka,
Sudan,
Sulawesi,
Sumatera,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Tanzania,
Tennessee,
Texas,
Thailand,
Tibet,
Togo,
Transcaucasus,
Trinidad-Tobago,
Tunisia,
Turkey-in-Europe,
Tuva,
Uganda,
Ukraine,
Uruguay,
Utah,
Uzbekistan,
Venezuela,
Vermont,
Vietnam,
Virginia,
Washington,
West Himalaya,
West Siberia,
West Virginia,
Windward Is.,
Wisconsin,
Wyoming,
Xinjiang,
Yakutskiya,
Yemen,
Yugoslavia,
Yukon,
Zambia,
Zaïre,
Zimbabwe
Introduced into:
Cape Provinces,
Hawaii,
Mauritius,
New Zealand North