It's an Eulophidae, and yes, the pattern of the hind tibia is typical, of our european Elasmus sp at least, together with large and disk like hind coxa, scutellum with triangular projection, shape of the wings etc.
So I presume it's an Elasmini (or Elasminae?). Two genera seem to occur in Australia: Elasmus and Austelasmus, according to Riek, E. F. (1967). Australian Hymenoptera chalcidoidea family eulophidae, subfamily eladminae. Australian journal of zoology, 15(1), 145-199.).
Acording to this publication, it should be Elasmus sp.
But let's wait for Chalcidbear.