Native to:
Afghanistan,
Alabama,
Albania,
Algeria,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Austria,
Azores,
Baleares,
Baltic States,
Belarus,
Belgium,
Bolivia,
Brazil South,
Brazil Southeast,
British Columbia,
Bulgaria,
Burundi,
California,
Cameroon,
Canary Is.,
Cape Provinces,
Cape Verde,
Central European Russia,
Chatham Is.,
Chile Central,
Chile North,
Chile South,
China South-Central,
China Southeast,
Colombia,
Corse,
Costa Rica,
Cyprus,
Czechoslovakia,
Denmark,
East Aegean Is.,
East European Russia,
Ecuador,
Egypt,
El Salvador,
Eritrea,
Ethiopia,
Florida,
France,
Georgia,
Germany,
Great Britain,
Greece,
Guatemala,
Gulf of Guinea Is.,
Gulf States,
Honduras,
Hungary,
Idaho,
Illinois,
Iran,
Iraq,
Ireland,
Italy,
Kansas,
Kazakhstan,
Kenya,
Kirgizstan,
Kriti,
Krym,
KwaZulu-Natal,
Lebanon-Syria,
Lesotho,
Libya,
Louisiana,
Madagascar,
Madeira,
Malawi,
Mexican Pacific Is.,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Mississippi,
Missouri,
Morocco,
Mozambique,
Nepal,
Netherlands,
New Mexico,
New South Wales,
New Zealand North,
New Zealand South,
North Carolina,
North Caucasus,
Northern Territory,
Northwest European Russia,
Norway,
Oklahoma,
Oregon,
Pakistan,
Palestine,
Peru,
Poland,
Portugal,
Queensland,
Romania,
Rwanda,
Sardegna,
Selvagens,
Sicilia,
Sinai,
South Australia,
South Carolina,
South European Russia,
Spain,
Sudan,
Sweden,
Switzerland,
Tadzhikistan,
Tanzania,
Tasmania,
Tennessee,
Texas,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Uganda,
Ukraine,
Uruguay,
Uzbekistan,
Venezuela,
Victoria,
Virginia,
Washington,
West Himalaya,
Western Australia,
Western Sahara,
Yemen,
Yugoslavia,
Zaïre,
Zimbabwe
Introduced into:
Amsterdam-St.Paul Is.,
Andaman Is.,
Angola,
Bangladesh,
China North-Central,
Colorado,
Connecticut,
Cuba,
Delaware,
Desventurados Is.,
District of Columbia,
Dominican Republic,
Easter Is.,
Finland,
Hainan,
Haiti,
Hawaii,
Iceland,
India,
Indiana,
Inner Mongolia,
Iowa,
Jamaica,
Japan,
Jawa,
Juan Fernández Is.,
Kentucky,
Kermadec Is.,
Korea,
Labrador,
Leeward Is.,
Maine,
Manchuria,
Manitoba,
Marianas,
Marshall Is.,
Maryland,
Massachusetts,
Mauritius,
Michigan,
Minnesota,
Mongolia,
Montana,
Myanmar,
Nebraska,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New York,
Newfoundland,
Nicobar Is.,
Norfolk Is.,
North Dakota,
North European Russia,
Northern Provinces,
Nova Scotia,
Ohio,
Ontario,
Pennsylvania,
Primorye,
Prince Edward I.,
Puerto Rico,
Qinghai,
Québec,
Rhode I.,
Rodrigues,
Réunion,
Saskatchewan,
South Dakota,
Sri Lanka,
Tibet,
Trinidad-Tobago,
Utah,
Vermont,
Vietnam,
West Siberia,
West Virginia,
Wisconsin,
Wyoming,
Xinjiang