I’m not sure that this is Hypolimnas misippus. The spots on the hind wings don’t look big enough. iNat has recorded sightings Overseas and at the top end of Australia (NT & FNQ). ALA has recorded sightings further south on the overview map but if you go through the actual sightings they are all from Overseas or the NT (there’s one for Brisbane but I think it has been misidentified). @SuziBond or @MichaelMulvaney would you mind having a look please, I think it’s most likely Hypolimnas bolina😊