Native to:
Benin,
Burundi,
Cameroon,
Central African Republic,
Eritrea,
Ethiopia,
Kenya,
Malawi,
Mozambique,
Nigeria,
Rwanda,
Sudan,
Uganda,
Yemen,
Zambia,
Zaïre,
Zimbabwe
Introduced into:
Arkansas,
Assam,
Austria,
Baltic States,
Belgium,
California,
Canary Is.,
China South-Central,
China Southeast,
Connecticut,
Costa Rica,
Czechoslovakia,
East Himalaya,
Florida,
France,
Great Britain,
Illinois,
India,
Ireland,
Italy,
Japan,
Jawa,
Kansas,
Lebanon-Syria,
Madeira,
Maryland,
Massachusetts,
Mexico Central,
Michigan,
Myanmar,
Nepal,
Netherlands,
New South Wales,
New York,
Northern Provinces,
Ohio,
Ontario,
Palestine,
Pennsylvania,
Poland,
Queensland,
Réunion,
Sardegna,
Sicilia,
Spain,
Sweden,
Tasmania,
Tennessee,
Tunisia,
Ukraine,
Virginia,
Yugoslavia