Halone coryphoea and sinuata are similar moths that are difficult to distinguish on forewing alone. Halone coryphoea is larger on average, but the size ranges overlap. Halone sinuata usually has less prominent and yellower light markings. The hindwings give a more reliable distinction: in H. coryphoea there is a black patch below the apex that reduces to a narrow black line extending along the trailing edge to the tornus; in H. sinuata there is a similar black patch below the apex but another black patch just inside the tornus, with a black line along the remainder of the trailing edge. These hindwing marks are the same above or below the wing. H. coryphoea has been recorded more often in the ACT than H. sinuata.
Halone sinuata is listed in the following regions:
Canberra & Southern Tablelands