A new Helicidae (Gastropoda) from the Middle Miocene of Bosnia and Herzegovina, with a revision of the genus Paradrobacia

We describe a new species of the Ariantinae genus Paradrobacia from the Middle Miocene (Langhian) of Bosnia and Herzegovina. The genus was represented so far only by three species from the Middle Miocene of Austria, the Late Miocene of Greece, and the Pliocene of Germany. Based on the conchological features of all available species, the genus Paradrobacia is revised and its stratigraphic and geographic ranges are evaluated. All species were found in lignites or lignite-bearing marls, which is why the genus is interpreted as an indicator of moist woodland environments. Related Miocene taxa and their systematic status are briefly discussed. Paradrobacia hrvatovici Harzhauser, Mandic and Neubauer n. sp. is introduced as a new species.