The adults of this species are large with a pale grey thorax and forewing.

A diagnostic feature is the pattern on its forewing which is a white subterminal line joined by black "teeth" markings.

This species has been recorded as a winter flyer having been collected in June to August.

[2] A diagnostic feature of this species is the pattern on its forewing which is a white subterminal line joined by black "teeth" markings.

[2][3] This species has been recorded as a winter flyer having been collected in June to August.