Bythiospeum sp.01

Possible distribution: southern Rhône. Stygobiont.
 
The species has been identified as B. diaphanum (Michaud, 1831) but without conclusive arguments. « According to current knowledge, B. diaphanum is a taxon whose distribution is limited to the southern French Jura. Furthermore, notable conchological differences […] do not allow us to conclude that taxa from the southern Jura are conspecific with those from the lower Rhône basin…  – A. Bertrand: Atlas préliminaire…, 2015, p.18.

A specimens collected in sediments, Goul de la Tannerie, Mithra emergences in Tourne vale, Bourg-saint-Andéol, SE. Ardèche, S. France. 2,5mm.
The Goul de la Tannerie. Altitude ≈ 65m.
 
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