This species is very variable. This forewing pattern is very similar to another image posted on the ALA: httpsbie.ala.org.auspeciesurnlsidbiodiversity.org.auafd.taxonb200510f-c3f7-4a51-a22e-ed0b58d9bd15#gallery
Spectrotrota fimbrialis males have a more bowed costa that b=gives them a more rounded shape at rest; they have a tuft of long loose scales near the base of the forewing; and an unscaled depression just inside the costa towards the base of the wing. The long labial palpi curve over the back of the head. 3390732 is a male (there are others)