Leiostyla R.T. Lowe, 1852

Ruud, A. Bank, Henk P. M. G Menkhorst & Eike Neubert, 2016, Descriptions of new and little-known land snail taxa from Turkey, and establishment of a new genus (Gastropoda, Pulmonata: Lauriidae, Enidae and Vitrinidae), Basteria 80 (1), pp. 5-30 : 7

Leiostyla R.T. Lowe, 1852

Leiostyla R.T. Lowe, 1852: 276 . Type species (by subsequent designation of Pilsbry, 1922: 67): Pupa [ Leiostyla ] vincta R.T. Lowe, 1852.

The genus Leiostyla has a disjunct distribution pattern (Manganelli, Giusti & Delle Cave, 1990) and has been split into two genera by Schileyko (1998a), namely Leiostyla and Euxinolauria Lindholm, 1924 . In addition, Schileyko divided both genera into several subgenera. However, the split between Leiostyla and Euxinolauria is already problematic, as has been discussed by Gittenberger & Pieper (1988), Hausdorf (1990), Pokryszko & Waldén (1992) and Walther & Hausdorf (2015). Therefore, we do not follow the system that was proposed by Schileyko, and continue to use Leiostyla in its classical sense.

A considerable number of Leiostyla species live in Turkey, especially in the northeastern part of the country (Caucasian region). Some species have been described west of this region: L. schweigeri Götting, 1963 ; L. superba Hausdorf, 1990 ; the polytypic L. paphlagonica Hausdorf, 1990 ; L. crassilabris Hausdorf, 1990 ; and L. zilchi Subai, 1993 . Because of the marked differences between L. superba and L. zilchi and the large geographical disjunction, we consider the latter a separate species, and not a subspecies of L. superba as was originally proposed by Subai (1993). Here we describe another subspecies of L. paphlagonica , and describe a new species that is morphologically related to L. superba and L. zilchi .