Doubtfully present in:
Thailand,
Vietnam
Native to:
Cambodia,
Caroline Is.,
China North-Central,
China South-Central,
China Southeast,
Hainan,
Inner Mongolia,
Japan,
Jawa,
Korea,
Laos,
Malaya,
Maluku,
Manchuria,
Myanmar,
Nansei-shoto,
New Guinea,
Northern Territory,
Ogasawara-shoto,
Philippines,
Primorye,
Solomon Is.,
Taiwan
Introduced into:
Alabama,
Angola,
Argentina Northeast,
Arkansas,
Assam,
Azores,
Bangladesh,
Bermuda,
Burundi,
Cameroon,
Central African Republic,
Dominican Republic,
DR Congo,
East Himalaya,
Ethiopia,
Fiji,
Florida,
Gabon,
Georgia,
Ghana,
Gilbert Is.,
Hawaii,
Honduras,
Illinois,
India,
Italy,
Kansas,
Kentucky,
Krym,
Liberia,
Louisiana,
Maine,
Maryland,
Massachusetts,
Mississippi,
Mozambique,
Nepal,
New Caledonia,
New Jersey,
New South Wales,
New York,
Nigeria,
Niue,
Norfolk Is.,
North Carolina,
Northern Provinces,
Nova Scotia,
NW. Balkan Pen.,
Oklahoma,
Pakistan,
Panamá,
Pennsylvania,
Queensland,
Samoa,
Senegal,
Sierra Leone,
Society Is.,
South Carolina,
Sudan-South Sudan,
Tadzhikistan,
Tennessee,
Texas,
Tonga,
Transcaucasus,
Ukraine,
Vanuatu,
Virginia,
Wallis-Futuna Is.,
West Himalaya