Native to:
Angola,
Benin,
Botswana,
Burkina,
Burundi,
Cameroon,
Cape Provinces,
Cape Verde,
Central African Republic,
Chad,
Congo,
East Himalaya,
Egypt,
Equatorial Guinea,
Eritrea,
Ethiopia,
Free State,
Gabon,
Gambia,
Ghana,
Guinea,
Gulf of Guinea Is.,
India,
Ivory Coast,
Kenya,
KwaZulu-Natal,
Liberia,
Madagascar,
Malawi,
Mali,
Mauritania,
Mauritius,
Mozambique,
Namibia,
Niger,
Nigeria,
Northern Provinces,
Rodrigues,
Rwanda,
Réunion,
Senegal,
Seychelles,
Sierra Leone,
Somalia,
Sudan,
Swaziland,
Tanzania,
Togo,
Uganda,
West Himalaya,
Zambia,
Zaïre,
Zimbabwe
Introduced into:
Afghanistan,
Alabama,
Algeria,
Amur,
Andaman Is.,
Arizona,
Arkansas,
Aruba,
Assam,
Austria,
Bahamas,
Bangladesh,
Belgium,
Belize,
Bolivia,
Borneo,
Brazil North,
Brazil Northeast,
Brazil South,
Brazil Southeast,
Brazil West-Central,
Bulgaria,
California,
Cambodia,
Canary Is.,
Caroline Is.,
Cayman Is.,
Central European Russia,
China North-Central,
China South-Central,
China Southeast,
Christmas I.,
Cocos (Keeling) Is.,
Colombia,
Colorado,
Comoros,
Connecticut,
Cook Is.,
Corse,
Costa Rica,
Cuba,
Cyprus,
Czechoslovakia,
District of Columbia,
Djibouti,
Dominican Republic,
East Aegean Is.,
Ecuador,
El Salvador,
Fiji,
Florida,
France,
French Guiana,
Georgia,
Germany,
Great Britain,
Guatemala,
Guinea-Bissau,
Gulf States,
Guyana,
Haiti,
Hawaii,
Honduras,
Hungary,
Idaho,
Illinois,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Iraq,
Ireland,
Italy,
Jamaica,
Japan,
Jawa,
Kansas,
Kazakhstan,
Kentucky,
Khabarovsk,
Kirgizstan,
Korea,
Krym,
Laos,
Lebanon-Syria,
Leeward Is.,
Libya,
Louisiana,
Madeira,
Maine,
Malaya,
Manchuria,
Marianas,
Marshall Is.,
Maryland,
Massachusetts,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
Morocco,
Myanmar,
Nansei-shoto,
Nebraska,
Nepal,
Netherlands Antilles,
Nevada,
New Caledonia,
New Guinea,
New Hampshire,
New Jersey,
New Mexico,
New York,
New Zealand North,
New Zealand South,
Nicaragua,
Niue,
Norfolk Is.,
North Carolina,
North Caucasus,
North Dakota,
Ohio,
Oklahoma,
Oman,
Ontario,
Oregon,
Pakistan,
Palestine,
Panamá,
Pennsylvania,
Peru,
Pitcairn Is.,
Portugal,
Primorye,
Puerto Rico,
Québec,
Rhode I.,
Romania,
Sakhalin,
Samoa,
Sardegna,
Saudi Arabia,
Sinai,
Society Is.,
Solomon Is.,
South Carolina,
South Dakota,
South European Russia,
Spain,
Sri Lanka,
Suriname,
Sweden,
Tadzhikistan,
Taiwan,
Tennessee,
Texas,
Thailand,
Tonga,
Transcaucasus,
Trinidad-Tobago,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Ukraine,
Utah,
Uzbekistan,
Venezuela,
Vermont,
Vietnam,
Virginia,
Wake I.,
Washington,
Windward Is.,
Wisconsin,
Wyoming,
Xinjiang,
Yemen,
Yugoslavia