Zhang et al. 2022 showed with genomic analysis that the two subspecies of Atalopedes campestris each deserve full species status. The Pelham catalog and Moth Photographers Group have accepted this status change. A. campestris is the Sachem of the Pacific coast states, and A. huron is the Sachem of the eastern US, eastern Mexico, Central America, and northern South America.

Pelham catalog: http://butterfliesofamerica.com/US-Can-Cat.htm
Zhang et al. 2022: https://www.biodiversitylibrary.org/page/62027655
MPG: https://mothphotographersgroup.msstate.edu/species.php?phylo=770245.1