Ocrasa acerasta and albidalis have both been recorded in the ACT. The latter was described second, and was contrasted to albidalis as not having faint light lines nor a discal spot in the forewing, both of which can be hard to see. I can't see them in this photo, nor in the specimen previously identified on CNM as albidalis. As long as the photos are displaying all the markings, both reports would be of acerasta.