Lez Spring Snail (Bythinella eutrepha)  

This species was described in 1867.  

The Lez Spring Snail inhabited several groundwater-fed springs, but was originally described based on empty shells, which had been found in the flood line debris of the Lez River in the Hérault Department, France.  

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This species is now most probably extinct – recent records are lacking – if not, so it is extremely threatened by groundwater pollution, not at least by herbicides and pesticides from the nearby vineyards.  

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References:  

[1] V. Prié; J.-M. Bichain: Phylogenetic relationships and description of a new stygobite species of Bythinella (Mollusca, Gastropoda, Caenogastropoda, Amnicolidae) from southern France. Zoostystema 31(4): 987-1000. 2009  

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edited: 04.11.2017