Perrin's cave beetle

Perrin's cave beetle, Siettitia balsetensis, is an extinct freshwater beetle from France.^[1] It and Siettitia ayenionensis are the only two species in the genus Siettitia.

Perrin's cave beetle
Conservation status
Extinct  (IUCN 3.1)
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Coleoptera
Suborder:	Adephaga
Family:	Dytiscidae
Genus:	Siettitia
Species:	†S. balsetensis
Binomial name
†Siettitia balsetensis Abeille de Perrin, 1904

This subterranean species was discoloured, its sensory silks were well developed and the eyes were extremely reduced yet probably functional. The tracheae of its wing-cases (elytra) were well developed and it absorbed dissolved oxygen through its cuticle.^[2]

See also

• List of extinct animals of Europe