Description of the genital structure of four Turkish orculids (Gastropoda: Pulmonata: Orculidae)

The genital structure of three orculid species occurring in north-eastern Turkey (Schileykula Gittenberger 1983) and one Pagodulina species from Southern Turkey (Pagodulina pisidica Schütt 1993) is described here. The taxonomic position of Schileykula aculeata Gittenberger & Menkhorst 1993, Schileykula attilae Páll-Gergely 2010 and Schileykula sigma Hausdorf 1996 are clarified based on genital-morphological data, and all of these species are shown to belong to the genus Schileykula. The areal distribution of Schileykula is indicated. Surprisingly, the richest area for Schileykula, in terms of numbers of species, lies within the northeastern part of the range of the genus.