A new species of crustacean, blind, discovered in the creeks of Marseille

Near Marseille, a new species of crustacean has just been identified. Named  Tethysbaena ledoyeri , it lives in the brackish waters of an underground river, within the Calanques national park . Measuring between two and three millimeters, this crustacean evolves in limestone walls covered with clayey silt, where no plant grows. A hostile and dark environment.

Devoid of eyes ,  Tethysbaena ledoyeri  would move with a sense of smell very fine and feel, detailed AFP Pierre Chevaldonné, behind this discovery. The researcher, also director of research at the CNRS in biology and marine ecology , specifies that ”  until 2003, the only specimen collected was too damaged to allow the species to be described  “. The sample taken in 2019 made it possible to formalize the discovery!

The crustacean feeds on bacteria , and can ”  practically fast ” for many months, Pierre Chevaldonné stunned. It completes a group that is still poorly known, since it only comprises 37 species in the world for the moment: the order of  Thermosbaenaceae . ”  It’s as if I told you that we discovered a species of bat for the first time in France,  ” notes Pierre Chevaldonné. An announcement all the more pleasing as the species could be endemic to the Calanques.

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