Native to:
Assam,
Bangladesh,
Benin,
Bismarck Archipelago,
Borneo,
Burkina,
Cambodia,
Cameroon,
Caroline Is.,
China South-Central,
China Southeast,
Cook Is.,
East Himalaya,
Eritrea,
Ethiopia,
Gambia,
Ghana,
Guinea-Bissau,
Hainan,
Hawaii,
India,
Ivory Coast,
Japan,
Jawa,
Kenya,
Korea,
Laos,
Lesser Sunda Is.,
Malaya,
Mali,
Maluku,
Marianas,
Marshall Is.,
Myanmar,
Nansei-shoto,
Nepal,
New Caledonia,
New Guinea,
Nicobar Is.,
Niger,
Nigeria,
Northern Territory,
Oman,
Pakistan,
Philippines,
Queensland,
Senegal,
Sierra Leone,
Solomon Is.,
Somalia,
South Australia,
Sri Lanka,
Sudan,
Sulawesi,
Sumatera,
Taiwan,
Thailand,
Togo,
Uganda,
Vanuatu,
Vietnam,
West Himalaya,
Western Australia,
Yemen
Introduced into:
Gulf of Guinea Is.