Native to:
Alabama,
Alberta,
Angola,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Bahamas,
Belize,
Benin,
Bolivia,
Botswana,
Brazil North,
Brazil Northeast,
Brazil South,
Brazil Southeast,
Brazil West-Central,
British Columbia,
Burundi,
California,
Cameroon,
Cape Provinces,
Cayman Is.,
Central African Republic,
Colombia,
Colorado,
Congo,
Connecticut,
Costa Rica,
Cuba,
Delaware,
District of Columbia,
Dominican Republic,
Ecuador,
El Salvador,
Ethiopia,
Florida,
Free State,
French Guiana,
Gabon,
Galápagos,
Georgia,
Ghana,
Guatemala,
Guinea,
Guyana,
Haiti,
Honduras,
Idaho,
Illinois,
Indiana,
Iowa,
Ivory Coast,
Jamaica,
Kansas,
Kentucky,
Kenya,
KwaZulu-Natal,
Leeward Is.,
Lesotho,
Louisiana,
Maine,
Malawi,
Manitoba,
Maryland,
Massachusetts,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
Mozambique,
Namibia,
Nebraska,
Netherlands Antilles,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New York,
Nicaragua,
Nigeria,
North Carolina,
North Dakota,
Northern Provinces,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Panamá,
Paraguay,
Pennsylvania,
Peru,
Prince Edward I.,
Puerto Rico,
Québec,
Rhode I.,
Rwanda,
Saskatchewan,
South Carolina,
South Dakota,
Southwest Caribbean,
Suriname,
Swaziland,
Tanzania,
Tennessee,
Texas,
Trinidad-Tobago,
Turks-Caicos Is.,
Uganda,
Uruguay,
Utah,
Venezuela,
Venezuelan Antilles,
Vermont,
Virginia,
Washington,
West Virginia,
Windward Is.,
Wisconsin,
Wyoming,
Zambia,
Zaïre,
Zimbabwe
Introduced into:
Altay,
Andaman Is.,
Ascension,
Assam,
Austria,
Baltic States,
Bangladesh,
Belarus,
Belgium,
Bermuda,
Bismarck Archipelago,
Borneo,
Bulgaria,
Burkina,
Cambodia,
Canary Is.,
Cape Verde,
Caroline Is.,
Central European Russia,
Chagos Archipelago,
Chile North,
China South-Central,
China Southeast,
Comoros,
Cook Is.,
Cyprus,
Czechoslovakia,
East Aegean Is.,
East Himalaya,
Fiji,
France,
Germany,
Gilbert Is.,
Greece,
Gulf of Guinea Is.,
Gulf States,
Hainan,
Hawaii,
Hungary,
India,
Iraq,
Italy,
Japan,
Jawa,
Kirgizstan,
Kriti,
Krym,
Laos,
Lesser Sunda Is.,
Line Is.,
Madeira,
Malaya,
Marianas,
Marquesas,
Marshall Is.,
Mauritius,
Morocco,
Myanmar,
Nansei-shoto,
Nauru,
Nepal,
Netherlands,
New Caledonia,
New South Wales,
Newfoundland,
North Caucasus,
Philippines,
Poland,
Queensland,
Romania,
Réunion,
Samoa,
Senegal,
Seychelles,
Sierra Leone,
Society Is.,
Solomon Is.,
South Australia,
South European Russia,
Spain,
Sri Lanka,
Sweden,
Switzerland,
Taiwan,
Thailand,
Tibet,
Tonga,
Tuamotu,
Tubuai Is.,
Ukraine,
Uzbekistan,
Vanuatu,
Vietnam,
Wallis-Futuna Is.,
West Himalaya,
Western Australia,
Yugoslavia