Native to:
Afghanistan,
Alabama,
Albania,
Aldabra,
Algeria,
Angola,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Aruba,
Ascension,
Assam,
Austria,
Azores,
Bahamas,
Baleares,
Bangladesh,
Belarus,
Belgium,
Belize,
Benin,
Bolivia,
Borneo,
Botswana,
Brazil North,
Brazil Northeast,
Brazil South,
Brazil Southeast,
Brazil West-Central,
Bulgaria,
Burkina,
Burundi,
California,
Cameroon,
Canary Is.,
Cape Provinces,
Cape Verde,
Caroline Is.,
Cayman Is.,
Central African Repu,
Central European Rus,
Chad,
Chagos Archipelago,
Chile North,
China South-Central,
China Southeast,
Christmas I.,
Colombia,
Colorado,
Comoros,
Congo,
Cook Is.,
Corse,
Costa Rica,
Cuba,
Cyprus,
Czechoslovakia,
Djibouti,
Dominican Republic,
East Aegean Is.,
Ecuador,
Egypt,
El Salvador,
Eritrea,
Ethiopia,
Fiji,
Florida,
France,
Free State,
French Guiana,
Gabon,
Galápagos,
Gambia,
Georgia,
Germany,
Ghana,
Gilbert Is.,
Greece,
Guatemala,
Guinea,
Guinea-Bissau,
Gulf of Guinea Is.,
Gulf States,
Guyana,
Hainan,
Haiti,
Hawaii,
Honduras,
Howland-Baker Is.,
Hungary,
India,
Iran,
Iraq,
Italy,
Ivory Coast,
Jamaica,
Jawa,
Kansas,
Kazan-retto,
Kenya,
Kirgizstan,
Kriti,
Kuwait,
KwaZulu-Natal,
Laccadive Is.,
Lebanon-Syria,
Leeward Is.,
Lesser Sunda Is.,
Liberia,
Libya,
Line Is.,
Louisiana,
Madeira,
Malawi,
Malaya,
Maldives,
Mali,
Maluku,
Marcus I.,
Marianas,
Marquesas,
Marshall Is.,
Mauritania,
Mauritius,
Mexican Pacific Is.,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Mississippi,
Missouri,
Morocco,
Mozambique,
Mozambique Channel I,
Myanmar,
Namibia,
Nansei-shoto,
Nepal,
Netherlands,
Netherlands Antilles,
Nevada,
New Caledonia,
New Guinea,
New Mexico,
New South Wales,
Nicaragua,
Niger,
Nigeria,
Niue,
North Carolina,
North Caucasus,
Northern Provinces,
Northern Territory,
Ogasawara-shoto,
Oklahoma,
Oman,
Pakistan,
Palestine,
Panamá,
Paraguay,
Peru,
Philippines,
Phoenix Is.,
Pitcairn Is.,
Poland,
Portugal,
Puerto Rico,
Queensland,
Rodrigues,
Romania,
Rwanda,
Réunion,
Samoa,
Sardegna,
Saudi Arabia,
Senegal,
Seychelles,
Sicilia,
Sierra Leone,
Sinai,
Society Is.,
Socotra,
Somalia,
South Australia,
South Carolina,
South China Sea,
South European Russi,
Southwest Caribbean,
Spain,
Sri Lanka,
St.Helena,
Sudan,
Sulawesi,
Sumatera,
Suriname,
Swaziland,
Switzerland,
Taiwan,
Tanzania,
Tennessee,
Texas,
Togo,
Tokelau-Manihiki,
Tonga,
Transcaucasus,
Trinidad-Tobago,
Tuamotu,
Tubuai Is.,
Tunisia,
Turkey,
Turkey-in-Europe,
Turks-Caicos Is.,
Tuvalu,
Uganda,
Uruguay,
Utah,
Venezuela,
Venezuelan Antilles,
Vietnam,
Virginia,
Wake I.,
Wallis-Futuna Is.,
Western Australia,
Windward Is.,
Yemen,
Yugoslavia,
Zambia,
Zaïre,
Zimbabwe
Introduced into:
Alberta,
Altay,
Amur,
Andaman Is.,
Bermuda,
British Columbia,
Cambodia,
Central American Pac,
Chile Central,
Chile South,
China North-Central,
Cocos (Keeling) Is.,
Connecticut,
Delaware,
Denmark,
Desventurados Is.,
District of Columbia,
East European Russia,
East Himalaya,
Easter Is.,
Finland,
Great Britain,
Idaho,
Illinois,
Indiana,
Inner Mongolia,
Iowa,
Japan,
Juan Fernández Is.,
Kamchatka,
Kazakhstan,
Kentucky,
Korea,
Krym,
Laos,
Lesotho,
Maine,
Manchuria,
Manitoba,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Montana,
Nauru,
Nebraska,
New Brunswick,
New Hampshire,
New Jersey,
New York,
New Zealand North,
Nicobar Is.,
Norfolk Is.,
North Dakota,
Nova Scotia,
Ohio,
Ontario,
Oregon,
Pennsylvania,
Primorye,
Prince Edward I.,
Qinghai,
Québec,
Rhode I.,
Saskatchewan,
Solomon Is.,
South Dakota,
Sweden,
Tadzhikistan,
Tasmania,
Thailand,
Tibet,
Turkmenistan,
Ukraine,
Uzbekistan,
Vanuatu,
Vermont,
Washington,
West Himalaya,
West Siberia,
West Virginia,
Wisconsin,
Wyoming,
Xinjiang