Native to:
Afghanistan,
Alabama,
Alaska,
Alberta,
Altay,
Amur,
Argentina Northeast,
Argentina Northwest,
Arizona,
Arkansas,
Assam,
Austria,
Bahamas,
Baltic States,
Bangladesh,
Belarus,
Belgium,
Belize,
Bolivia,
Brazil North,
Brazil Northeast,
Brazil South,
Brazil Southeast,
Brazil West-Central,
British Columbia,
Bulgaria,
Burkina,
Buryatiya,
California,
Cambodia,
Cameroon,
Cayman Is.,
Central European Rus,
Chad,
Chile Central,
Chile South,
China North-Central,
China South-Central,
China Southeast,
Chita,
Colombia,
Colorado,
Connecticut,
Costa Rica,
Cuba,
Czechoslovakia,
Delaware,
Denmark,
District of Columbia,
Dominican Republic,
East European Russia,
East Himalaya,
Ecuador,
El Salvador,
Finland,
Florida,
France,
French Guiana,
Gambia,
Georgia,
Germany,
Ghana,
Great Britain,
Greece,
Guatemala,
Guinea-Bissau,
Guyana,
Hainan,
Haiti,
Honduras,
Hungary,
Idaho,
Illinois,
India,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Ivory Coast,
Jamaica,
Japan,
Jawa,
Kamchatka,
Kansas,
Kazakhstan,
Kentucky,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Labrador,
Laos,
Louisiana,
Madagascar,
Magadan,
Maine,
Malaya,
Mali,
Manchuria,
Manitoba,
Maryland,
Massachusetts,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Mongolia,
Montana,
Myanmar,
Nansei-shoto,
Nebraska,
Nepal,
Netherlands,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New York,
Newfoundland,
Nicaragua,
Nicobar Is.,
Niger,
Nigeria,
North Carolina,
North Caucasus,
North Dakota,
North European Russi,
Northwest European R,
Northwest Territorie,
Norway,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pakistan,
Panamá,
Paraguay,
Pennsylvania,
Peru,
Philippines,
Poland,
Portugal,
Primorye,
Prince Edward I.,
Puerto Rico,
Québec,
Rhode I.,
Romania,
Sakhalin,
Sardegna,
Saskatchewan,
Senegal,
South Carolina,
South Dakota,
South European Russi,
Spain,
Sudan,
Sulawesi,
Sumatera,
Suriname,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Tennessee,
Texas,
Thailand,
Tibet,
Transcaucasus,
Trinidad-Tobago,
Turkey,
Turkey-in-Europe,
Tuva,
Ukraine,
Uruguay,
Utah,
Uzbekistan,
Venezuela,
Vermont,
Vietnam,
Virginia,
Washington,
West Himalaya,
West Siberia,
West Virginia,
Windward Is.,
Wisconsin,
Wyoming,
Xinjiang,
Yakutskiya,
Yugoslavia,
Yukon
Introduced into:
Azores,
Borneo,
Cook Is.,
Fiji,
Hawaii,
Leeward Is.,
Marianas,
Marquesas,
Palestine,
Society Is.,
South Australia,
Tanzania,
Tubuai Is.