Tyrannochthonius cavicola is a species of pseudoscorpion in the Chthoniidae family. It is endemic to Australia. It was described in 1967 by Austrian arachnologist Max Beier.[1]
The species occurs in eastern New South Wales. The type locality is The Grill Cave, Bungonia, some 125 km south-west of Sydney.[1]
The arachnids are cave-dwelling, terrestrial predators.[1]