Native to:
Alabama,
Alaska,
Alberta,
Aleutian Is.,
Altay,
Amur,
Arizona,
Arkansas,
British Columbia,
Buryatiya,
California,
Chita,
Colorado,
Connecticut,
Delaware,
District of Columbia,
Georgia,
Guatemala,
Idaho,
Illinois,
Indiana,
Iowa,
Irkutsk,
Kamchatka,
Kansas,
Kazakhstan,
Kentucky,
Khabarovsk,
Krasnoyarsk,
Louisiana,
Magadan,
Maine,
Maryland,
Massachusetts,
Mexican Pacific Is.,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Mongolia,
Montana,
Nebraska,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New York,
Newfoundland,
North Carolina,
Northwest Territories,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pennsylvania,
Prince Edward I.,
Québec,
Rhode I.,
Saskatchewan,
South Dakota,
Tennessee,
Texas,
Tuva,
Utah,
Vermont,
Virginia,
Washington,
West Virginia,
Wisconsin,
Wyoming,
Yakutskiya,
Yukon
Introduced into:
Argentina South,
Belgium,
Bulgaria,
Chile South,
Cuba,
Czechoslovakia,
Denmark,
Falkland Is.,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Iceland,
Ireland,
Italy,
Netherlands,
New South Wales,
New Zealand North,
New Zealand South,
Northern Territory,
Norway,
Portugal,
Queensland,
Romania,
South Australia,
Spain,
Sweden,
Ukraine,
Victoria,
Western Australia