Belgrandiella sp.01

Known distribution: Aussurucq.
The genus is stygoxen, but some species can also be stygobiont. Uthurbieta karst spring near Guessalia stream, Aussurucq, Pyrénées-Atlantiques. 1,7mm. Altitude ≈ 230m.
The shell looks a bit like that of Belgrandiella saxatilis (Reyniés, 1844), hence the choice of this genus for these specimens. Same spot, 2mm.
Same spot. 1,3mm.
Same spot. 1,5mm.
 
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