Stirling Range katydid (ID unkown)
Identified as Thumelinia winstoni on Bowerbird by Matthew Connors: "Stunning! This will be the first ALA record and the first live images available online of both the species and the genus! Compare with the specimen at http://orthoptera.speciesfile.org/Common/basic/Taxa.aspx?TaxonNameID=1143285 - there are a few differences but I believe yours is a younger individual"