Native to:
Benin,
Cameroon,
Central African Repu,
Chad,
Congo,
Equatorial Guinea,
Eritrea,
Ethiopia,
Gabon,
Ghana,
Guinea,
Guinea-Bissau,
Ivory Coast,
Kenya,
Liberia,
Malawi,
Niger,
Nigeria,
Senegal,
Sierra Leone,
Somalia,
Sudan,
Tanzania,
Uganda,
Zambia,
Zaïre
Introduced into:
Afghanistan,
Alabama,
Albania,
Andaman Is.,
Angola,
Argentina Northeast,
Arkansas,
Assam,
Bahamas,
Bangladesh,
Belize,
Bolivia,
Brazil North,
Brazil Northeast,
Brazil South,
Brazil Southeast,
Brazil West-Central,
Bulgaria,
Burkina,
Cambodia,
Caroline Is.,
Cayman Is.,
China North-Central,
China South-Central,
China Southeast,
Christmas I.,
Colombia,
Comoros,
Connecticut,
Cook Is.,
Costa Rica,
Cuba,
Czechoslovakia,
District of Columbia,
Dominican Republic,
East European Russia,
East Himalaya,
El Salvador,
Fiji,
Florida,
Galápagos,
Guatemala,
Gulf of Guinea Is.,
Hainan,
Haiti,
Honduras,
Illinois,
India,
Indiana,
Inner Mongolia,
Italy,
Jamaica,
Japan,
Jawa,
Kansas,
Kentucky,
Korea,
Laos,
Leeward Is.,
Lesser Sunda Is.,
Libya,
Louisiana,
Malaya,
Maldives,
Mali,
Manchuria,
Marianas,
Marquesas,
Marshall Is.,
Maryland,
Mauritania,
Mauritius,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Missouri,
Myanmar,
Nepal,
New Caledonia,
New Guinea,
New Jersey,
New York,
Nicaragua,
Nicobar Is.,
North Carolina,
Northern Provinces,
Ohio,
Oman,
Pakistan,
Paraguay,
Pennsylvania,
Peru,
Philippines,
Puerto Rico,
Qinghai,
Queensland,
Rhode I.,
Rodrigues,
Romania,
Rwanda,
Réunion,
Samoa,
Sicilia,
Society Is.,
Solomon Is.,
South Carolina,
South China Sea,
Sri Lanka,
Sumatera,
Tadzhikistan,
Taiwan,
Tennessee,
Texas,
Thailand,
Tibet,
Trinidad-Tobago,
Tuamotu,
Turkmenistan,
Utah,
Vanuatu,
Venezuela,
Vermont,
Vietnam,
Wallis-Futuna Is.,
West Himalaya,
West Virginia,
Windward Is.,
Xinjiang,
Yemen