This species is known from the ACT. There are dark (this one) and light variants. See here: http://lepidoptera.butterflyhouse.com.au/ster/nephelota.html This photo appears to be a close match to photos on Bold Systems, See here:- https://www.boldsystems.org/index.php/Taxbrowser_Taxonpage?searchMenu=taxonomy&query=Idaea+nephelota&taxon=Idaea+nephelota A new species for NtureMapr's Canberra and Southern Tablelands region if confirmed. Excellent photo.