Tyrannochthonius aridus

Tyrannochthonius aridus is a species of pseudoscorpion in the Chthoniidae family. It is endemic to Australia. It was described in 2008 by Australian arachnologists Karen Edward and Mark Harvey.

Distribution and habitat
The species occurs in North West Australia. The type locality is Cave B6 on Barrow Island, off the Pilbara coast.

Behaviour
The arachnids are cave-dwelling, terrestrial predators.