Dark Arches 2321

Dark Arches 2321

Observation - Dark Arches 2321. Description: Darker moth is a dark arches, but the lighter example I'm unsure about. I think it is a Dark Arches, too but I'd welcome any suggestions. I find there is so much variation & the books so hard to distinguish that confirmation is tough.

Darker moth is a dark arches, but the lighter example I'm unsure about. I think it is a Dark Arches, too but I'd welcome any suggestions. I find there is so much variation & the books so hard to distinguish that confirmation is tough. There are so many of these "Arches".