Native to:
Afghanistan,
Alabama,
Albania,
Algeria,
Andaman Is.,
Angola,
Argentina Northeast,
Argentina Northwest,
Arizona,
Arkansas,
Aruba,
Assam,
Bahamas,
Baleares,
Bangladesh,
Belize,
Benin,
Bermuda,
Bismarck Archipelago,
Bolivia,
Borneo,
Botswana,
Brazil North,
Brazil Northeast,
Brazil South,
Brazil Southeast,
Brazil West-Central,
Bulgaria,
Burkina,
Burundi,
California,
Cambodia,
Cameroon,
Cape Provinces,
Caroline Is.,
Cayman Is.,
Central African Repu,
Chad,
China North-Central,
China South-Central,
China Southeast,
Christmas I.,
Colombia,
Colorado,
Comoros,
Congo,
Connecticut,
Cook Is.,
Corse,
Costa Rica,
Cuba,
Cyprus,
Delaware,
District of Columbia,
Dominican Republic,
East Aegean Is.,
East Himalaya,
Ecuador,
El Salvador,
Equatorial Guinea,
Eritrea,
Ethiopia,
Fiji,
Florida,
France,
Free State,
French Guiana,
Gabon,
Gambia,
Georgia,
Ghana,
Greece,
Guatemala,
Guinea,
Guinea-Bissau,
Gulf of Guinea Is.,
Guyana,
Hainan,
Haiti,
Honduras,
Idaho,
Illinois,
India,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Iraq,
Italy,
Ivory Coast,
Jamaica,
Japan,
Jawa,
Kansas,
Kazakhstan,
Kentucky,
Kenya,
Kirgizstan,
Korea,
Kriti,
Krym,
KwaZulu-Natal,
Laos,
Lebanon-Syria,
Leeward Is.,
Lesotho,
Lesser Sunda Is.,
Liberia,
Louisiana,
Madagascar,
Maine,
Malawi,
Malaya,
Mali,
Maluku,
Manchuria,
Manitoba,
Marquesas,
Maryland,
Massachusetts,
Mauritania,
Mauritius,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Morocco,
Mozambique,
Myanmar,
Namibia,
Nansei-shoto,
Nebraska,
Nepal,
Netherlands Antilles,
Nevada,
New Caledonia,
New Guinea,
New Hampshire,
New Jersey,
New Mexico,
New South Wales,
New York,
Nicaragua,
Nicobar Is.,
Niger,
Nigeria,
Niue,
Norfolk Is.,
North Carolina,
North Caucasus,
North Dakota,
Northern Provinces,
Northern Territory,
Ogasawara-shoto,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pakistan,
Palestine,
Panamá,
Paraguay,
Pennsylvania,
Peru,
Philippines,
Pitcairn Is.,
Portugal,
Puerto Rico,
Qinghai,
Queensland,
Québec,
Rhode I.,
Romania,
Rwanda,
Samoa,
Santa Cruz Is.,
Sardegna,
Saudi Arabia,
Senegal,
Sicilia,
Sierra Leone,
Society Is.,
Solomon Is.,
Somalia,
South Carolina,
South Dakota,
Spain,
Sri Lanka,
Sudan,
Sulawesi,
Sumatera,
Suriname,
Swaziland,
Tadzhikistan,
Taiwan,
Tanzania,
Tennessee,
Texas,
Thailand,
Tibet,
Togo,
Tonga,
Transcaucasus,
Trinidad-Tobago,
Tuamotu,
Tubuai Is.,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Uganda,
Uruguay,
Utah,
Uzbekistan,
Vanuatu,
Venezuela,
Venezuelan Antilles,
Vermont,
Vietnam,
Virginia,
Wallis-Futuna Is.,
Washington,
West Himalaya,
West Virginia,
Western Australia,
Windward Is.,
Wisconsin,
Wyoming,
Yemen,
Yugoslavia,
Zambia,
Zaïre,
Zimbabwe
Introduced into:
Austria,
Canary Is.,
Czechoslovakia,
Germany,
Hungary,
Madeira,
Poland,
Switzerland