I think this moth is probably in the genus Amyna. Not sure of the species. If Amyna (genus) the white spot is the largest in size I have seen online. Possibly A. punctum, See here:- https://bie.ala.org.au/species/https://biodiversity.org.au/afd/taxa/1bcafcdf-b203-441a-85a1-064bba768949#gallery This photo suggests a very dark, almost black moth. Most Amyna spp. I have seen photographed online are more a chocolate brown colour- although several specimens of several spp., a minority, are almost black like this one. Eg. see also A. axis.