mothguide.com Aethalura intertexta
Note four lines on FW beginning in prominent dark bars at the costa. The outermost bar may be less distinct.
This moth is noticeably smaller than the porcelain gray (
Reilly pers obs
This is a rather uncommon moth, not very much is known about it.
McGuffin WC. 1977. Guide to the Geometridae of Canada (Lepidoptera) II. Subfamily Ennominae. 2. Memoirs of the Entomological Society of Canada 101: 1-125.