Pachymerellus zygethus is a species of centipede in the Geophilidae family. It is endemic to Australia, and was first described in 1920 by American biologist Ralph Vary Chamberlin. The original description of this species is based on a specimen measuring about 35 mm in length with 55 pairs of legs. Distribution The species occurs in Tasmania. Behaviour The centipedes are solitary terrestrial predators that inhabit plant litter, soil and rotting wood. References zygethus Centipedes of Australia Endemic fauna of Australia Fauna of Tasmania Animals described in 1920 Taxa named by Ralph Vary Chamberlin