Austrochthonius australis is a species of pseudoscorpion in the Chthoniidae family. It is endemic to Australia. It was described in 1951 by American arachnologist Clayton Hoff.[1]
The species occurs in both eastern and south-western Australia, inhabiting plant litter. The type locality is Mount Slide in Kinglake National Park, Victoria.[1]
The pseudoscorpions are terrestrial predators.[1]