Native to:
Afghanistan,
Alabama,
Alberta,
Algeria,
Andaman Is.,
Angola,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Aruba,
Ascension,
Assam,
Bahamas,
Bangladesh,
Belize,
Benin,
Bolivia,
Botswana,
Brazil North,
Brazil Northeast,
Brazil South,
Brazil Southeast,
Brazil West-Central,
British Columbia,
Burkina,
Burundi,
California,
Cambodia,
Cameroon,
Canary Is.,
Cape Provinces,
Cape Verde,
Caprivi Strip,
Central African Repu,
Chad,
Chile Central,
Chile North,
China North-Central,
China South-Central,
China Southeast,
Colombia,
Colorado,
Comoros,
Congo,
Connecticut,
Costa Rica,
Cuba,
Cyprus,
Delaware,
District of Columbia,
Djibouti,
Dominican Republic,
East Aegean Is.,
East Himalaya,
Ecuador,
Egypt,
El Salvador,
Eritrea,
Ethiopia,
Florida,
Free State,
French Guiana,
Gabon,
Galápagos,
Gambia,
Georgia,
Ghana,
Greece,
Guatemala,
Guinea,
Guinea-Bissau,
Gulf of Guinea Is.,
Gulf States,
Guyana,
Hainan,
Haiti,
Honduras,
Idaho,
Illinois,
India,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Iraq,
Italy,
Ivory Coast,
Jamaica,
Kansas,
Kazakhstan,
Kentucky,
Kenya,
Kirgizstan,
Kriti,
KwaZulu-Natal,
Laos,
Lebanon-Syria,
Leeward Is.,
Lesotho,
Lesser Sunda Is.,
Libya,
Louisiana,
Madagascar,
Madeira,
Maine,
Malawi,
Malaya,
Mali,
Maluku,
Manitoba,
Marquesas,
Maryland,
Massachusetts,
Mauritania,
Mauritius,
Mexican Pacific Is.,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Mongolia,
Montana,
Morocco,
Mozambique,
Myanmar,
Namibia,
Nansei-shoto,
Nebraska,
Nepal,
Netherlands Antilles,
Nevada,
New Caledonia,
New Guinea,
New Hampshire,
New Jersey,
New Mexico,
New South Wales,
New York,
Nicaragua,
Nicobar Is.,
Niger,
Nigeria,
North Carolina,
North Caucasus,
North Dakota,
Northern Provinces,
Northern Territory,
Ogasawara-shoto,
Ohio,
Oklahoma,
Oman,
Ontario,
Oregon,
Pakistan,
Palestine,
Panamá,
Paraguay,
Pennsylvania,
Peru,
Philippines,
Puerto Rico,
Qinghai,
Queensland,
Québec,
Rhode I.,
Rodrigues,
Rwanda,
Réunion,
Saskatchewan,
Saudi Arabia,
Senegal,
Seychelles,
Sicilia,
Sierra Leone,
Sinai,
Socotra,
Somalia,
South Australia,
South Carolina,
South Dakota,
Spain,
Sri Lanka,
Sudan,
Sulawesi,
Suriname,
Swaziland,
Tadzhikistan,
Taiwan,
Tanzania,
Tasmania,
Tennessee,
Texas,
Thailand,
Tibet,
Togo,
Transcaucasus,
Trinidad-Tobago,
Tunisia,
Turkey,
Turks-Caicos Is.,
Uganda,
Uruguay,
Utah,
Uzbekistan,
Venezuela,
Venezuelan Antilles,
Vermont,
Victoria,
Vietnam,
Virginia,
Washington,
West Himalaya,
West Virginia,
Western Australia,
Western Sahara,
Windward Is.,
Wisconsin,
Wyoming,
Xinjiang,
Yemen,
Zambia,
Zaïre,
Zimbabwe
Introduced into:
Fiji,
Hawaii,
Japan,
New Zealand North,
Tubuai Is.,
Vanuatu,
Yugoslavia