Doubtfully present in:
Algeria,
Fiji
Native to:
Alabama,
Alaska,
Albania,
Alberta,
Aleutian Is.,
Altay,
Amur,
Argentina Northwest,
Arizona,
Arkansas,
Assam,
Austria,
Azores,
Baltic States,
Belarus,
Belgium,
Bolivia,
Borneo,
Brazil North,
British Columbia,
Bulgaria,
Burundi,
Buryatiya,
California,
Cambodia,
Central European Rus,
China North-Central,
China South-Central,
China Southeast,
Chita,
Colombia,
Colorado,
Connecticut,
Cook Is.,
Corse,
Costa Rica,
Cuba,
Czechoslovakia,
Delaware,
Denmark,
District of Columbia,
Dominican Republic,
East European Russia,
East Himalaya,
Ecuador,
El Salvador,
Finland,
Florida,
France,
Føroyar,
Georgia,
Germany,
Great Britain,
Greece,
Greenland,
Guatemala,
Guyana,
Hainan,
Haiti,
Hawaii,
Honduras,
Hungary,
Iceland,
Idaho,
Illinois,
India,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Ireland,
Irkutsk,
Italy,
Jamaica,
Japan,
Jawa,
Kamchatka,
Kansas,
Kazakhstan,
Kentucky,
Khabarovsk,
Korea,
Krasnoyarsk,
Kuril Is.,
Labrador,
Laos,
Leeward Is.,
Lesser Sunda Is.,
Louisiana,
Madagascar,
Madeira,
Magadan,
Maine,
Malawi,
Malaya,
Maluku,
Manchuria,
Manitoba,
Marquesas,
Maryland,
Massachusetts,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Mongolia,
Montana,
Mozambique,
Myanmar,
Nansei-shoto,
Nepal,
Netherlands,
Nevada,
New Brunswick,
New Caledonia,
New Guinea,
New Hampshire,
New Jersey,
New Mexico,
New York,
Newfoundland,
Nicaragua,
North Carolina,
North Caucasus,
North European Russi,
Northern Provinces,
Northwest European R,
Northwest Territorie,
Norway,
Nova Scotia,
Nunavut,
Ogasawara-shoto,
Ohio,
Oklahoma,
Ontario,
Oregon,
Panamá,
Pennsylvania,
Peru,
Philippines,
Poland,
Portugal,
Primorye,
Prince Edward I.,
Puerto Rico,
Québec,
Rhode I.,
Romania,
Rwanda,
Sakhalin,
Samoa,
Saskatchewan,
Society Is.,
Solomon Is.,
South Carolina,
South Dakota,
South European Russi,
Spain,
Sri Lanka,
Sulawesi,
Sumatera,
Svalbard,
Swaziland,
Sweden,
Switzerland,
Taiwan,
Tennessee,
Texas,
Thailand,
Tibet,
Transcaucasus,
Trinidad-Tobago,
Tubuai Is.,
Turkey,
Turkey-in-Europe,
Tuva,
Uganda,
Ukraine,
Utah,
Vanuatu,
Venezuela,
Venezuelan Antilles,
Vermont,
Vietnam,
Virginia,
Washington,
West Siberia,
West Virginia,
Windward Is.,
Wisconsin,
Wyoming,
Xinjiang,
Yakutskiya,
Yugoslavia,
Yukon,
Zaïre
Introduced into:
South Georgia