Feeding on the same plants as adults I have previously uploaded observations for. They live and feed in leaf blisters in the leaves and look just like the N. dorsalis larvae shown in Monteith et al. (2021), and no other Notosacantha is recorded in the area.
N. monilicornis based on range and 'It differs from N. dorsalis in having lower
elytral tubercles and only one pair of radial bars extending to margin of elytra.' - Monteith et al (2021) Australian Entomologist 48 (4): 329–354