"Australian longhorn beetles (Coleoptera: Cerambycidae). Vol. 1, Introduction and subfamily Lamiinae", by Slipinski & Escalona, 2013. p 433. transversesulcata refers to the transverse furrows on the pronotum.
Yes, I think you are correct. Looking at the files on Moths of Vic Pt. 7 CD the mostly straight dark main line on the hindwings is the distinguishing feature for Psilosticha attacta.
Hi Tim, its me again (see recent message about use of your Wedgie photo). This is another of the species we would like to use in the previously mentioned social media post. Again, we would credit your work. Let me know if that is OK. Thanks, Ange :-)