The pale marks on the hind-margins suggest Leistomorpha brontoscopa, but I see no indications of labial palps, or Castulo doubledayi, but it is a bit small, and there are no specimens of this species on BOLD with the forewing pale patches of this 4398034.
I think I can just see palpi, the shape and pale patch near the tornus match L. brontoscopa, and they are abundant in Belconnen (and I assume elsewhere) just now