Ferussacia antonini n. sp. (Gastropoda Stylommatophora Ferussaciidae), another new species enriching Sicilian biodiversity

In the present paper, the Authors describe a new species of the genus Ferussacia Risso, 1826 (Gastropoda Stylommatophora Ferussaciidae) from western Sicily (Italy): F. antonini n. sp. It is very different, at first sight, from F. folliculum (Schröter, 1784), the only other species very widespread in Sicily, mainly due to the shape of the shell formed by 5 whorls with the last whorl comprising 2/3 of the entire shell height. Further information on the biology of this new species and the taxonomy and anatomy of Ferussacia species living in Sicily are provided.