The measured male specimen had a body length of 7.54 mm. The eyes and rostrum are absent. The main flagellum of the first antenna has 17 articles. The small lake in the sandstone quarry cavity varied seasonally in water level from 20 to 70 cm. Specimens were swimming on its clayey bottom, 40–45 m from the entrance. Records are from Normandy, Guernsey and Jersey, two islands off Brittany, and central France.
The measured male specimen had a body length of 7.54 mm.
The small lake in the sandstone quarry cavity varied seasonally in water level from 20 to 70 cm. Specimens were swimming on its clayey bottom, 40–45 m from the entrance.
The eyes and rostrum are absent.
The main flagellum of the first antenna has 17 articles.
An extinction-risk assessment has not been added yet.