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