In Australia, the Queensland fruit fly inhabits parts of Northern Territory, Queensland, New South Wales and the eastern corner of Victoria, with outbreaks in South Australia. In 1989, B. tryoni became established in Perth, Western Australia, but an eradication campaign using baits, male lures and sterile insect techniques eradicated it (White and Elson-Harris 1994, CSIRO 2004, GISD 2011).
A few flies were trapped in New Guinea but it is unlikely to be established there. Occasional flies are trapped in the Austral and Society Islands in the Pacific. It is now widespread in New Caledonia, French Polynesia and Pitcairn Islands. It was twice detected on Easter Island, but eradicated (White and Elson-Harris 1994, GISD 2011).