Georgiev, Dilian2026-10-192026-10-192026-10-011313-9940https://doi.uni-plovdiv.bg/handle/store/1127This review provides an updated and corrected checklist of the stygobiotic freshwater snails (Gastropoda: Truncatelloidea) of Bulgaria. A total of 51 stygobiotic species are recorded, belonging to the families Bythinellidae (4 species) and Hydrobiidae (47 species), including several undescribed taxa and new species localities. Geographic coordinates and species distributions are revised and updated.enmalacofaunaBalkanssubterraneanspeciesdiversityArticle