The genus Ellobium Röding, 1798 (Gastropoda, Ellobiidae) in Vietnam: updated species accounts and the first country record of Ellobium tornatelliforme (Petit de la Saussaye, 1843)

We provide the first voucher-based review of Ellobium Röding, 1798 (Gastropoda, Ellobiidae) in Vietnam and confirm four species. Ellobium tornatelliforme (Petit de la Saussaye, 1843) is recorded from Vietnam for the first time. We update the distributions and habitat data of E. aurisjudae (Linnaeus, 1758), E. aurismidae (Linnaeus, 1758), and E. chinense (L. Pfeiffer, 1854) based on voucher specimens. An identification key and revised species accounts are provided, establishing a taxonomically verified baseline for future taxonomic, biogeographical, and conservation studies.