The Giant Wood Moth (E. cinereas) has not been recorded from Tasmania. I'm suggesting E. literatus (recorded extensively in TAS) but I;m not sure of the specie. A female? https://tasmanianinsectfieldguide.com/hexapoda/insectsoftasmanialepidoptera/superfamily-cossoidea/cossidae-wood-moths/genus-endoxyla/
The moth was on a little grey stone wall and was being attacked by a colony of ants but for some reason couldn’t fly away. It was flapping its wings which is how we noticed itAssociated plant
An ant colony was trying to eat it aliveAssociated animal