Native to:
Alabama,
Alaska,
Alberta,
Andaman Is.,
Angola,
Antipodean Is.,
Argentina Northeast,
Arkansas,
Ascension,
Assam,
Austria,
Azores,
Baltic States,
Bangladesh,
Belarus,
Belgium,
Belize,
Benin,
Bismarck Archipelago,
Bolivia,
Borneo,
Brazil North,
Brazil Northeast,
Brazil South,
Brazil Southeast,
Brazil West-Central,
British Columbia,
Bulgaria,
Burkina,
Burundi,
Buryatiya,
California,
Cameroon,
Cape Provinces,
Cape Verde,
Caroline Is.,
Central African Repu,
Chatham Is.,
China South-Central,
China Southeast,
Colombia,
Comoros,
Congo,
Connecticut,
Cook Is.,
Costa Rica,
Cuba,
Czechoslovakia,
Delaware,
Denmark,
District of Columbia,
Dominican Republic,
East Himalaya,
Ecuador,
El Salvador,
Equatorial Guinea,
Ethiopia,
Fiji,
Finland,
Florida,
France,
French Guiana,
Gabon,
Galápagos,
Gambia,
Georgia,
Germany,
Ghana,
Great Britain,
Guatemala,
Guinea,
Guinea-Bissau,
Gulf of Guinea Is.,
Guyana,
Hainan,
Haiti,
Hawaii,
Honduras,
Hungary,
Idaho,
Illinois,
India,
Indiana,
Iowa,
Ireland,
Italy,
Ivory Coast,
Jamaica,
Japan,
Jawa,
Kansas,
Kazan-retto,
Kentucky,
Kenya,
Kermadec Is.,
Korea,
KwaZulu-Natal,
Labrador,
Laos,
Leeward Is.,
Lesotho,
Lesser Sunda Is.,
Liberia,
Louisiana,
Madagascar,
Madeira,
Maine,
Malawi,
Malaya,
Mali,
Maluku,
Manitoba,
Marianas,
Marquesas,
Maryland,
Massachusetts,
Mauritius,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Southeast,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Montana,
Mozambique,
Myanmar,
Nansei-shoto,
Nepal,
Netherlands,
New Brunswick,
New Caledonia,
New Guinea,
New Hampshire,
New Jersey,
New South Wales,
New York,
New Zealand North,
New Zealand South,
Newfoundland,
Nicaragua,
Nicobar Is.,
Nigeria,
Norfolk Is.,
North Carolina,
Northern Provinces,
Northern Territory,
Northwest European R,
Norway,
Nova Scotia,
Ogasawara-shoto,
Ohio,
Oklahoma,
Ontario,
Oregon,
Panamá,
Paraguay,
Pennsylvania,
Peru,
Philippines,
Poland,
Portugal,
Prince Edward I.,
Puerto Rico,
Queensland,
Québec,
Rhode I.,
Rodrigues,
Romania,
Rwanda,
Réunion,
Samoa,
Saskatchewan,
Senegal,
Seychelles,
Sierra Leone,
Society Is.,
Solomon Is.,
South Australia,
South Carolina,
Spain,
Sri Lanka,
St.Helena,
Sudan,
Sulawesi,
Sumatera,
Suriname,
Swaziland,
Sweden,
Switzerland,
Taiwan,
Tanzania,
Tasmania,
Tennessee,
Texas,
Thailand,
Tibet,
Togo,
Tonga,
Trinidad-Tobago,
Tuamotu,
Tubuai Is.,
Turkey,
Uganda,
Ukraine,
Uruguay,
Vanuatu,
Venezuela,
Venezuelan Antilles,
Vermont,
Victoria,
Vietnam,
Virginia,
Wallis-Futuna Is.,
Washington,
West Himalaya,
West Siberia,
West Virginia,
Western Australia,
Windward Is.,
Wisconsin,
Yugoslavia,
Zambia,
Zaïre,
Zimbabwe
Introduced into:
Lebanon-Syria,
Sicilia