Native to:
Afghanistan,
Alabama,
Alaska,
Alberta,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Assam,
Bahamas,
Bolivia,
Brazil South,
Brazil Southeast,
Brazil West-Central,
British Columbia,
California,
Chile Central,
Chile North,
Chile South,
China North-Central,
China South-Central,
China Southeast,
Colombia,
Colorado,
Connecticut,
Costa Rica,
Cuba,
Delaware,
District of Columbia,
East Himalaya,
Ecuador,
El Salvador,
Florida,
Galápagos,
Georgia,
Guatemala,
Guyana,
Honduras,
Idaho,
Illinois,
Indiana,
Inner Mongolia,
Iowa,
Japan,
Jawa,
Kansas,
Kentucky,
Khabarovsk,
Korea,
Kuril Is.,
Labrador,
Lesser Sunda Is.,
Louisiana,
Maine,
Manchuria,
Manitoba,
Maryland,
Massachusetts,
Mexican Pacific Is.,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
Myanmar,
Nebraska,
Nepal,
Nevada,
New Brunswick,
New Guinea,
New Hampshire,
New Jersey,
New Mexico,
New York,
Newfoundland,
Nicaragua,
North Carolina,
North Dakota,
Northwest Territorie,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pakistan,
Panamá,
Pennsylvania,
Peru,
Philippines,
Primorye,
Prince Edward I.,
Puerto Rico,
Qinghai,
Québec,
Rhode I.,
Saskatchewan,
South Carolina,
South Dakota,
Sulawesi,
Sumatera,
Tadzhikistan,
Taiwan,
Tennessee,
Texas,
Tibet,
Uruguay,
Utah,
Venezuela,
Vermont,
Vietnam,
Virginia,
Washington,
West Himalaya,
West Virginia,
Wisconsin,
Wyoming,
Xinjiang,
Yukon
Introduced into:
Austria,
Czechoslovakia,
Great Britain,
Hawaii,
Italy,
North Caucasus,
Spain,
Transcaucasus