Idiosoma subtriste

Idiosoma subtriste is a species of mygalomorph spider in the Idiopidae family. It is endemic to Australia. It was described in 1877 by British arachnologist Octavius Pickard-Cambridge.

Distribution and habitat
The species occurs in South Australia, in the Mount Lofty and Flinders Ranges, in open scrub and woodland habitats. The type locality is Adelaide.

Behaviour
The spiders are fossorial, terrestrial predators.