These galls are almost certainly caused by the midge Dasineura rubiformis described in Kolesik et. al. (2005).
Classification
statistics from Australian Faunal Directory
Order Diptera - Flies, 8955 named species in Australia at Nov. 2021
Family CECIDOMYIIDAE (146 species in Australia)
Genus Dasineura
Species Dasineura rubiformis
References
- Kolesik, P., Adair, R.J., and Eick, G (2005) Nine new species of Dasineura (Diptera: Cecidomyiidae) from flowers of Australian Acacia (Mimosaceae. Systematic Entomology 30:454-479.