Hypertrophidae – a twig moth, I think, but no close match was easily found to a recognised species. The closest match I found was to an image labelled ‘Eupselia’ photographed by D. Hobern see: https://bie.ala.org.au/species/urn:lsid:biodiversity.org.au:afd.taxon:b7c3055c-242d-4eff-8f52-e8bd3ad4c45f#gallery
OK, but I thought there was maybe too much white on the head of my specimen and it did not have such a smooth boundary between the main white and the black markings in the dorsal area as in E. aristonica.
The 3rd from the left, top row, at http://v4.boldsystems.org/index.php/Taxbrowser_Taxonpage?taxid=376721 shows a vague pale bar across the thorax like your specimen. But E. metabola is variable enough to be a contender too: http://v4.boldsystems.org/index.php/Taxbrowser_Taxonpage?taxid=77362