Sathrochthonius tuena is a species of pseudoscorpion in the Chthoniidae family. It is endemic to Australia. It was described in 1962 by American arachnologist Joseph Conrad Chamberlin.
The species occurs in eastern New South Wales. The type locality is âÂÂprobably in the Blue Mountains near SydneyâÂÂ.
The pseudoscorpions are cave-dwelling, terrestrial predators.