Gumleaf Grasshopper

Size unexpectedly small. I can't quite remember but I think it was about 10mm. It was not shy. The short antennae point towards a grasshopper. But I am really not sure about the identification. Update 11/12/2017: A large specimen of this species was found in South-East Queensland in a dry Eucalypt forest. Size about 40mm. It shows a very prominent crest with a creamy coloured rim, very short forewings.