Pseudotyrannochthonius gigas is a species of pseudoscorpion in the Pseudotyrannochthoniidae family. It is endemic to Australia. It was described in 1969 by Austrian arachnologist Max Beier.
Distribution and habitat The species occurs in the Western District of Victoria. The type locality is Harman One Cave, Byaduk.
Behaviour The pseudoscorpions are cave-dwelling terrestrial predators.
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