This species looks tentattively similar to the moth illustrated on Lepidoptera Butterfly House, see https://lepidoptera.butterflyhouse.com.au/hade/dentosa.html and a similar pinned specimen shown on the ALA on the Species inquienda for Hadenini showing species of doubtful taxonomic status. This moth is much paler than the similarly named (Chabuata) dentosa described and illustrated by Moths of Victoria (Part 9) which shows much a more distinct pattern of streaked markings on the forewings. A new species for NatureMapr's Canberra and Southern Tablelands region if confirmed. Nice photos.