This was the only moth I could find on the walls at the Visitors Center of the Arizona Sonoran Desert Museum*. It belongs to the "s-signata species group" and I suspect this is Rindgea cyda, based on images on MPG, but there are at least 3 look-alike species which may occur in SE Arizona.
* Staff explained to me that they purposefully have no night lighting on the grounds for "dark sky" and security reasons.
The Macariini are a tribe of geometer moths in the Ennominae subfamily. Though they share many traits with the Sterrhinae, this is probably plesiomorphic rather than indicative of a close relationship, and DNA sequence data points to the Boarmiini as particularly close relatives of the Macariini. All things considered, this tribe might still resemble the very first Ennominae more than any other living lineage in the subfamily.