Synonyms and other taxonomic changes
According to ITIS, four North American species formerly placed in Choristoneura are now placed in the genus Archips. These are:
Archips fractivittana (Broken-banded Leafroller)
Archips pinus (Jack Pine Budworm)
According to All-Leps and almost every other source (based on Internet searches), these species are still in the genus Choristoneura, so they're being left here for now.
Numbers
nearctica.com lists 17 North American species, 4 of which are considered by ITIS to be species of
Archips, namely:
fractivittana, fumiferana, lambertiana, and
pinus. See Synonyms section above.
Internet References
pinned adult images of 12 species by Jim Vargo (Moth Photographers Group)