Worldwide. Afrotropical records:
Burkina Faso, Cameroon, Cape Verde, Central African Republic, Democratic
Republic of Congo, Gabon, Gambia, Ivory Coast, Kenya, Madagascar,
Mauritius, Nigeria, Sierra Leone, South Africa, Tanzania, Uganda,
Zambia, Zimbabwe, Yemen (van Noort et. al. in press).
Usually attacking Drosophilidae in
various habitats but sometimes also fruit-infesting Tephritidae or other
flies. (Nordlander & Grijpma,1991; literature on lab Ganaspis on
Drosophila as well as applied entomology literature on
Ganaspis reared from fruit-infestors: Melk and Govind, 1999; Vass
and Nappi, 2000). None of the host records are from Africa.