Siettitia balsetensis Abeille de Perrin

Perrin’s Cave Diving Beetle (Siettitia balsetensis)  

This species, which was described in the year 1904, is known from only two localities, the commune of Le Beausset and the town of La Seyne-sur-Mer in the Provence-Alpes-Côte d’Azur region in southern France.  

The species inhabited caves, where it depended on a habitat providing stagnant groundwater and constantly low temperatures, a habitat that was low in oxygen but rich in carbon dioxide, without any light and vegetation.  

Perrin’s Cave Diving Beetle is now regarded as extinct.


edited: 11.10.2020