Land snails (Mollusca: Gastropoda) of islands Žirje, Kaprije and Prvić (Croatia)

Land malacofauna of three islands of the Šibenik archipelago (Dalmatia, Croatia), Žirje, Kaprije and Prvić was studied. During field work, the highest number of species, 31, was recorded on the largest island, Žirje; on the mid-sized island of Kaprije, there were 27 species, and on the smallest of them, the island of Prvić, there were 20 species. We confirmed all the species recorded previously in literature, six for Žirje and one for Prvić. In the fauna we emphasize the recently described species Hypnophila zirjensis Štamol, Manganelli, Barbato & Giusti, 2018, so far found only on Žirje, Truncatellina lussinensis Štamol, 1995 was found on Kaprije which is the second find after its locus typicus on Lošinj island, and Delima (Semirugata) vidovichii vidovichii (L. Pfeiffer, 1846) on Prvić, which is the first island record of this taxon. Comparison of these malacofaunas with Adriatic islands similar in size – Žirje with Silba and Prvić with Piškera, showed that Žirje and Prvić have more species, which we assigned to the more diverse habitats.