Euglesa casertana (Poli, 1791)

Fluviatile, lacustrian and crenobiont. Known distribution: almost worldwide (hence a huge number of synonyms). Suspension and deposit feeder. Above: adult specimen collected in sediments, downstream the karst spring and its pond, Camarade hamlet, south-west of Valence-sur-Baïse, Gers, Occitania, S. France. Altitude ≈ 95m. 2,85mm.
The shape is much less diagonal than in Malm’s subtruncata. Same spot. 2,65-2,8mm.
The cardinal area, with the arched teeth.
Old specimen from the same spot. 3,3mm.
 
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