This is a female of either Perga affinis or Perga dorsalis. Need to see a detailed image showing the ovipositor flap hairs to separate the two. Males are indistinguishable.
At this stage identification beyond subfamily is speculative at best. I've raised similar to these and the eclosed adults were Pergagrapta species. I've set up a project on iNat for observations of sawfly rearing. We have been getting some good results. Still yet to decipher any visible features on larvae to identify beyond subfamily. https://inaturalist.ala.org.au/projects/australian-sawfly-rearing-observations