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The family Valvatidae Gray 1840 has a widespread distribution in the Holarctic. To date, four species of the genus Valvata have been reported from Turkey: V. cristata O.F. Muller 1774, V. piscinalis (O.F. Muller 1774), V. saulcyi Bourguignat 1853 and V. macrostoma Morch 1864. This study is based on recently collected materials from the comprehensive field survey at Biga Peninsula streams, northwestern Anatolia, between 2009 and 2011. Additional materials were also examined from Cire Brook, Isparta, southwestern Anatolia, Turkey. Valvata kebapcii sp. n. is described here as new for science. Further research is required in order to reveal exact ranges of dispersal of the new Valvata species in Turkey.

THE VALVATA SPECIES OF TURKEY WITH A DESCRIPTION OF VALVATA KEBAPCII N. SP. (MOLLUSCA: VALVATIDAE)