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30 June 2017 The genus Mercuria Boeters, 1971 in France (Gastropoda: Caenogastropoda: Hydrobiidae). West-European Hydrobiidae, Part 13
Hans D. Boeters, Gerhard Falkner
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The MercuriaBoeters, 1971 species living in the coastal zones of France are reviewed. In the Atlantic zone the genus Mercuria comprises four species: M. anatina (Poiret, 1801), M. baudoniana (Gassies, 1859), M. bayonnensis (Locard, 1894) and M. sarahae (Paladilhe, 1869); in the Mediterranean zone we discriminate three species: M. meridionalis (Risso, 1826), M. similis (Draparnaud, 1805), and M. corsensis n. sp. Mercuria sarahae is represented by two subspecies, M. s. sarahae and M. s. vindilica (Paladilhe, 1870). Mercuria corsensis n. sp., a close sister species to the Sardinian M. zopissa (Paulucci, 1882) lives only in the extreme South of Corsica. Amnicola emilianaPaladilhe, 1869, does not belong to the genus Mercuria but must be attributed to Pseudamnicola Paulucci, 1878. Lectotypes for Bythinia [sic] bayonnensisLocard, 1894, Bythinia [sic] baudonianaGassies, 1859, Amnicola lanceolataPaladilhe, 1869, Amnicola sarahaePaladilhe, 1869, Amnicola vindilicaPaladilhe, 1870 and BithyniameridionalisRisso, 1826 are designated. For Amnicola emiliana a neotype is designated. In addition the systematic position of the genus Mercuria is discussed which results in the introduction of a new monotypic subfamily, Mercuriinae n. subfam. The new Corsican species M. corsensis n. sp. is with an average heigth of 3.10 mm and a diameter of 2.20 mm slightly larger and more inflated than M. zopissa, which is reflected by a ratio of height of aperture to total height of c. 52% instead of 42–44%. In M. corsensis n. sp. the last whorl before the aperture does neither descend nor ascend, while it clearly descends in M. zopissa. Further, the identity of the following nominal taxa is discussed: Bithinia [sic] moutoniiDupuy, 1849, Amnicola spirataPaladilhe, 1869, Paludestrina brevispiraPaladilhe, 1870, Paludina ceruleaMassot, 1872 and Amnicola lutetianaLocard, 1893. Finally, ecological preferences and the endangerment of the species mentioned for France are discussed.
© Publications scientifiques du Muséum national d'Histoire naturelle, Paris.
Hans D. Boeters and Gerhard Falkner "The genus Mercuria Boeters, 1971 in France (Gastropoda: Caenogastropoda: Hydrobiidae). West-European Hydrobiidae, Part 13," Zoosystema 39(2), 227-261, (30 June 2017).
Received: 12 August 2015; Accepted: 6 February 2017; Published: 30 June 2017

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Atlantic coastal area
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