Family Curculionidae.
This native weevil can be a pest of fruit trees (pome fruits, stone fruits and citrus), with the subterranean larvae damaging roots and the adults eating foliage.
See also https://bie.ala.org.au/species/urn:lsid:biodiversity.org.au:afd.taxon:09591e8c-b423-4789-834d-bc8ab924750c#gallery
Leptopius robustus is listed in the following regions: