Bythinella Moquin-Tandon, 1856 (Gastropoda: Rissooidea: Bythinellidae) in Romania: its morphology with description of four new species

Andrzej Falniowski, e-mail: faln@zuk.iz.uj.edu.pl

Department of Malacology Institute of Zoology, Jagiellonian University, Gronostajowa 9, 30-387 Cracow, Poland

Magdalena Szarowska

Department of Malacology Institute of Zoology, Jagiellonian University, Gronostajowa 9, 30-387 Cracow, Poland

Ioan Sirbu

Department of Ecology and Environmental Protection, Lucian Blaga University, 31 Oituz St., 550337 Sibiu, Romania
Abstract

The shell, penis, and female reproductive organs of six molecularly distinct Bythinella species from Romania are described. The species were found by the authors in their earlier study based on mt DNA COI, and rRNA ITS-1. None of the species is identical with B. austriaca (Frauenfeld, 1857). Two of them are identifiedas B. dacica Grossu, 1946 and B. molcsanyi H. Wagner, 1941. The other four species are described as new. The occurrence of B. melanostoma(Brancsik, 1889), and of B. austriaca ehrmanni Pax, 1938 in Romania is rejected. The sympatric occurrence of two species in four studied springs was stressed. The molecular distinctnessof the studied species is not reflected in theirmorphology, the morphological differences are poorlymarked, their variability ranges overlapping.

Key words
Bythinella; Romania; species; description; morphology
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Folia Malacologica (2009) 17: 21-36
First published on-line: 2010-04-19 00:00:00
http://dx.doi.org/10.2478/v10125-009-0003-2
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