Phylogenetic position of Tefennia Schutt et Yildirim, 2003 (Caenogastropoda: Rissooidea)

The phylogenetic position of Tefennia tefennica Schutt et Yildirim, 2003, an endemic snail species from southwestern Turkey, was inferred with maximum likelihood analyses of DNA sequences of mitochondrial cytochrome oxidase subunit I and nuclear 18S rRNA. Tefennia belongs to the Hydrobiidae, Sadlerianinae; its sister clade comprises Grossuana Radoman, 1973, Trichonia Radoman, 1973 and Daphniola Radoman, 1973. Shell, radula and soft parts of T. tefennica are presented.

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