Trochulus biconicus (NMBE 567151) collected from Wissberg I A shell, sw = 5.56 mm, sh = 2.55 mm B situs C penis (Pe) with penial papilla (PP) D cross section of the penial papilla. Shell × 5.

  Part of: Kneubühler J, Baggenstos M, Neubert E (2022) On the verge of extinction – revision of a highly endangered Swiss alpine snail with description of a new genus, Raeticella gen. nov. (Gastropoda, Eupulmonata, Hygromiidae). ZooKeys 1104: 69-91.