Not a good description of how they differ in the bigger paper, and ranges seem broadly sympatric on iNat. Not going to try to atlas anything so all IDs of Drymaeus will be bumped to Peltellinae.
Salvador RB, Silva FS, Cavallari DC, Köhler F, Slapcinsky J, Breure ASH (2023) Molecular phylogeny of the Orthalicoidea land snails: Further support and surprises. PLoS ONE 18(7): e0288533. https://doi.org/10.1371/journal.pone.0288533 (連結)