I am going to stick my neck out with this one following pictures in Rentz's book page 314, a unique colour pattern and curly antennae! A male. Well done Helen!
The last grasshopper (Acridoidea) taxonomist in Australia was (arguably) Ken Key who retired in the 80's. He sorted all the species in the collection and assigned numbers to them if undesribed but only studied and described about 400 species of Morabini and species in the genera Psednura, Monistria, Phaulacridium, Praxibulus and Austroicetes (Acrididae) that have unusable keys in the field. Hopefully DNA and AI will come to the rescue but names still have to be supplied. Perhaps some 'influencer' will take them on