Clausilia weyersi Roffiaen 1868

Clausilia weyersi Roffiaen, 1868 Fig. 3 B, Suppl. material 1 Clausilia weyersi Roffiaen, 1868: 75, pl. 1, fig. 3. Type material. RBINS I.G.9154 / MT.1773: 2 syntypes, ex Roffiaen coll., ex de Cort coll. RBINS I.G.9154 / HIST.2486: 29 possible syntypes, ex de Cort coll. Type locality. Switzerland: Weesen. “ Wesen ” (Roffiaen 1868: 75). Taxonomic status. Junior synonym of Laciniaria plicata plicata (Draparnaud, 1801). Discussion. Lot RBINS I.G.9154 / MT.1773 comes from the type locality, belonged to Roffiaen’s collection, and bears the writing “ types ”; its specimens are considered syntypes. Lot RBINS I.G.9154 / HIST.2486, however, while coming from the type locality, has no indication to have belonged to Roffiaen’s collection or of being types, though they belonged to de Cort’s collection. Therefore, the later specimens are considered possible syntypes. Clausilia weyersi bears close resemblance to typical specimens of Laciniaria plicata plicata, both regarding shell shape, size and apertural barriers (Nordsieck 2008; see Suppl. material 1 for CT scan snapshots of internal structures of shell). It can thus, be considered a junior synonym of the latter.