possibly ?? Calliteara farenoides http://lepidoptera.butterflyhouse.com.au/lyma/farenoides.html or other Lymantridae http://lepidoptera.butterflyhouse.com.au/lyma/pura.html http://lepidoptera.butterflyhouse.com.au/lyma/lyma-cats.html
Perhaos C, farenoides, but this photo (and another) from iNaturalist look sufficiently different to me to raise doubts. https://www.inaturalist.org/taxa/486517-Calliteara-farenoides/browse_photos