Eudryas spp.
I only became aware of these species this year. All identification descriptions only referred to the terminal scalloping as the means of separating them. It turns out that the other wing markings also play a role - see this discussion for detailed information - https://inaturalist.ca/observations/86116419#activity_identification_8c7b1120-41cd-414f-b3f1-a5b0dc442061
Photos courtesy of CBIF
