Native to:
Angola,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Aruba,
Bahamas,
Belize,
Bolivia,
Botswana,
Brazil South,
Brazil West-Central,
California,
Cape Provinces,
Colombia,
Cuba,
Djibouti,
Dominican Republic,
Ecuador,
El Salvador,
Ethiopia,
Galápagos,
Guatemala,
Haiti,
Honduras,
Jamaica,
Kenya,
Leeward Is.,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Namibia,
Netherlands Antilles,
Nevada,
Northern Provinces,
Paraguay,
Peru,
Puerto Rico,
Somalia,
Southwest Caribbean,
Texas,
Turks-Caicos Is.,
Uruguay,
Venezuela,
Venezuelan Antilles,
Windward Is.
Introduced into:
Alabama,
Algeria,
Assam,
Bangladesh,
Brazil North,
Brazil Northeast,
Brazil Southeast,
Burkina,
Cambodia,
Cameroon,
Canary Is.,
Cape Verde,
Central African Republic,
Chad,
Cyprus,
East Himalaya,
Eritrea,
Florida,
Free State,
Gambia,
Georgia,
Ghana,
Greece,
Guinea,
Hainan,
Hawaii,
India,
Iran,
Iraq,
Ivory Coast,
Jawa,
KwaZulu-Natal,
Laos,
Libya,
Louisiana,
Mali,
Marianas,
Mauritania,
Mauritius,
Mississippi,
Morocco,
Mozambique,
Myanmar,
New Caledonia,
New Mexico,
New South Wales,
Niger,
Nigeria,
Northern Territory,
Oman,
Pakistan,
Palestine,
Queensland,
Réunion,
Saudi Arabia,
Senegal,
Sicilia,
Sierra Leone,
South Australia,
South Carolina,
Spain,
Sri Lanka,
Sudan,
Suriname,
Swaziland,
Tanzania,
Thailand,
Togo,
Trinidad-Tobago,
Tunisia,
Uganda,
Utah,
Vietnam,
West Himalaya,
Western Australia,
Yemen,
Zaïre,
Zimbabwe