Native to:
Alabama,
Amur,
Arkansas,
Assam,
Bangladesh,
Borneo,
Cameroon,
China North-Central,
China South-Central,
China Southeast,
Comoros,
Connecticut,
Cook Is.,
Delaware,
District of Columbia,
East Himalaya,
Ethiopia,
Fiji,
Georgia,
Ghana,
Gulf of Guinea Is.,
Hainan,
Hawaii,
Illinois,
India,
Indiana,
Inner Mongolia,
Iowa,
Ivory Coast,
Japan,
Jawa,
Kamchatka,
Kazan-retto,
Kentucky,
Kenya,
Kermadec Is.,
Khabarovsk,
Korea,
Kuril Is.,
Laos,
Lesser Sunda Is.,
Liberia,
Louisiana,
Madagascar,
Maine,
Malaya,
Maluku,
Manchuria,
Marquesas,
Maryland,
Massachusetts,
Mauritius,
Michigan,
Minnesota,
Mississippi,
Missouri,
Mozambique,
Myanmar,
Nansei-shoto,
Nepal,
New Brunswick,
New Caledonia,
New Guinea,
New Hampshire,
New Jersey,
New South Wales,
New York,
New Zealand North,
New Zealand South,
Nigeria,
Norfolk Is.,
North Carolina,
Northern Territory,
Nova Scotia,
Ogasawara-shoto,
Ohio,
Ontario,
Pakistan,
Pennsylvania,
Philippines,
Primorye,
Prince Edward I.,
Queensland,
Québec,
Rhode I.,
Rwanda,
Réunion,
Sakhalin,
Samoa,
Society Is.,
Solomon Is.,
South Carolina,
Sri Lanka,
Sulawesi,
Sumatera,
Taiwan,
Tanzania,
Tennessee,
Thailand,
Tibet,
Tonga,
Uganda,
Vanuatu,
Vermont,
Vietnam,
Virginia,
West Himalaya,
West Virginia,
Western Australia,
Wisconsin,
Zaïre,
Zimbabwe
Introduced into:
Azores,
Brazil South,
Brazil Southeast,
Cape Provinces,
Florida,
KwaZulu-Natal,
Lesotho,
Madeira,
Northern Provinces,
Paraguay,
Swaziland