Native to:
Afghanistan,
Aldabra,
Andaman Is.,
Angola,
Argentina Northeast,
Argentina Northwest,
Assam,
Bangladesh,
Belize,
Benin,
Bismarck Archipelago,
Borneo,
Botswana,
Brazil North,
Brazil Northeast,
Brazil Southeast,
Cabinda,
Cambodia,
Cameroon,
Cape Provinces,
Caprivi Strip,
Cayman Is.,
Central African Republic,
Chad,
China North-Central,
China South-Central,
China Southeast,
Christmas I.,
Comoros,
Congo,
Costa Rica,
Cuba,
Dominican Republic,
East Himalaya,
El Salvador,
Eritrea,
Ethiopia,
Free State,
Gabon,
Gambia,
Ghana,
Guatemala,
Guinea,
Guinea-Bissau,
Gulf of Guinea Is.,
Gulf States,
Hainan,
Haiti,
Honduras,
India,
Iran,
Ivory Coast,
Jamaica,
Japan,
Jawa,
Kenya,
Korea,
KwaZulu-Natal,
Laos,
Lesotho,
Lesser Sunda Is.,
Liberia,
Madagascar,
Malawi,
Malaya,
Mali,
Maluku,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Mozambique,
Myanmar,
Namibia,
Nansei-shoto,
Nepal,
New Guinea,
New South Wales,
Nicaragua,
Nicobar Is.,
Nigeria,
Northern Provinces,
Northern Territory,
Oman,
Pakistan,
Panamá,
Philippines,
Qinghai,
Queensland,
Rwanda,
Saudi Arabia,
Senegal,
Sierra Leone,
Socotra,
Solomon Is.,
Somalia,
South China Sea,
Southwest Caribbean,
Sri Lanka,
Sudan,
Sulawesi,
Sumatera,
Swaziland,
Taiwan,
Tanzania,
Texas,
Thailand,
Tibet,
Togo,
Uganda,
Vietnam,
West Himalaya,
Western Australia,
Yemen,
Zambia,
Zaïre,
Zimbabwe
Introduced into:
Hawaii,
Marianas,
Mauritius,
Réunion,
Samoa,
Trinidad-Tobago,
Vanuatu