Iagree, most seem not to look like this. This record also appears on the ALA: https://biocache.ala.org.au/occurrences/0250bab3-4504-468f-8d3d-7487fc990606
The first sighting for this species on natureMapr'ss South Coast region site if confirmed , although it was anticipated it would be recorded in the region. The four spots on the forewing distinguish it from Alathapsa malacella. Nice photos,