Orculella bulgarica (Hesse, 1915) (Gastropoda, Pulmonata, Orculidae) from the Middle Pleistocene to the Holocene of central Italy: another eastern element in the fauna of peninsular Italy

Fossil Orculella bulgarica (Hesse, 1915) is reported for the first time from the Italian Peninsula, based on an unpublished record (15 specimens collected in Holocene deposits from Piano di Orgia; Tuscany, central Italy) and two published reports from the Middle to the Late Pleistocene of Latium and Tuscany erroneously assigned to Orcula dolium (Draparnaud, 1801). Italian specimens match those from Turkey and Spain in all shell shape and size features. Orculella, like several other components of the Italian land malacofauna (for example the helicoidean genera Monacha and Helix, the parmacellid slug Parmacella, etc.), has an eastern origin and presumably colonized the peninsula at the end of the Pliocene or later in the Pleistocene through the Alpine sector surviving up to the early Holocene.