New taxa and systematic evaluation of clausiliids (Gastropoda, Pulmonata, Clausiliidae) from Iran and Turkey

Recently collected material provided valuable new information about Iranian and Turkish clausiliids. Pravispira subserrulata spec. nov. and Euxina patrisnemethi spec. nov. are described as new taxa from Turkey (Ordu prov.) and Iran (Mazandaran prov.), respectively. Systematic and zoogeographical relationships between the Iranian species of Euxina O. Boettger, 1877, are discussed on the basis of their shell and genital morphology, whereas the position of some endemic genera in the region is evaluated using newly obtained anatomical data.