FOLIA Folia Malacol. 23(4): 263–271 MALACOLOGICA ISSN 1506-7629 The Association of Polish Malacologists Faculty of Biology, Adam Mickiewicz University Bogucki Wydawnictwo Naukowe Poznań, December 2015 http://dx.doi.org/10.12657/folmal.023.022 TANOUSIA ZRMANJAE (BRUSINA, 1866) (CAENOGASTROPODA: TRUNCATELLOIDEA: HYDROBIIDAE): A LIVING FOSSIL Luboš BERAN1, SEBASTIAN HOFMAN2, ANDRZEJ FALNIOWSKI3* 1Nature Conservation Agency of the Czech Republic, Regional Office Kokořínsko – Máchův kraj Protected Landscape Area Administration, Česká 149, CZ 276 01 Mělník, Czech Republic 2Department of Comparative Anatomy, Institute of Zoology, Jagiellonian University, Gronostajowa 9, 30- 387 Cracow, Poland 3Department of Malacology, Institute of Zoology, Jagiellonian University, Gronostajowa 9, 30-387 Cracow, Poland (e-mail:
[email protected]) * corresponding author ABSTRACT: A living population of Tanousia zrmanjae (Brusina, 1866) was found in the mid section of the Zrmanja River in Croatia. The species, found only in the freshwater part of the river, had been regarded as possibly extinct. A few collected specimens were used for this study. Morphological data confirm the previous descriptions and drawings while molecular data place Tanousia within the family Hydrobiidae, subfamily Sadlerianinae Szarowska, 2006. Two different sister-clade relationships were inferred from two molecular markers. Fossil Tanousia, represented probably by several species, are known from interglacial deposits of the late Early Pleistocene to the early Middle Pleistocene