Native to:
Argentina Northeast,
Argentina Northwest,
Bolivia,
Brazil Northeast,
Brazil South,
Brazil Southeast,
Brazil West-Central,
Chile North,
Paraguay,
Peru,
Uruguay
Introduced into:
Alabama,
Albania,
Algeria,
Altay,
Amur,
Angola,
Arkansas,
Assam,
Austria,
Azores,
Bahamas,
Baleares,
Baltic States,
Bangladesh,
Belarus,
Belgium,
Benin,
British Columbia,
Bulgaria,
California,
Cameroon,
Canary Is.,
Cape Provinces,
Cape Verde,
Central European Rus,
China North-Central,
China South-Central,
China Southeast,
Colombia,
Congo,
Cook Is.,
Cuba,
Czechoslovakia,
Denmark,
East Aegean Is.,
East European Russia,
East Himalaya,
Egypt,
Ethiopia,
Finland,
Florida,
France,
French Guiana,
Gabon,
Galápagos,
Georgia,
Germany,
Great Britain,
Greece,
Gulf States,
Guyana,
Hainan,
Hawaii,
Hungary,
India,
Inner Mongolia,
Iran,
Italy,
Ivory Coast,
Japan,
Jawa,
Kazakhstan,
Kenya,
Kirgizstan,
Korea,
Kriti,
Krym,
KwaZulu-Natal,
Laos,
Lebanon-Syria,
Liberia,
Louisiana,
Madeira,
Malawi,
Malaya,
Manchuria,
Marianas,
Maryland,
Massachusetts,
Mauritania,
Mauritius,
Mississippi,
Missouri,
Morocco,
Mozambique,
Nepal,
Netherlands,
New Guinea,
New Hampshire,
New Jersey,
New South Wales,
New York,
New Zealand North,
New Zealand South,
Nigeria,
Norfolk Is.,
North Carolina,
North Caucasus,
Ogasawara-shoto,
Ohio,
Ontario,
Palestine,
Pennsylvania,
Philippines,
Poland,
Portugal,
Primorye,
Puerto Rico,
Queensland,
Québec,
Romania,
Rwanda,
Réunion,
Samoa,
Sardegna,
Saudi Arabia,
Sicilia,
Sinai,
Society Is.,
South Carolina,
South European Russi,
Spain,
Sri Lanka,
St.Helena,
Sudan,
Sulawesi,
Sumatera,
Suriname,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Tanzania,
Texas,
Thailand,
Tibet,
Tonga,
Transcaucasus,
Trinidad-Tobago,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Uganda,
Ukraine,
Utah,
Uzbekistan,
Vanuatu,
Venezuela,
Vietnam,
Virginia,
West Himalaya,
West Siberia,
Western Australia,
Windward Is.,
Xinjiang,
Yemen,
Yugoslavia,
Zambia,
Zaïre,
Zimbabwe