Synsphyronus nigerSynsphyronus niger is a species of pseudoscorpion in the Garypidae family. It is endemic to Australia. It was described in 1947 by American arachnologist Clarence Clayton Hoff.DescriptionThe body length of the holotype male is 3.6 mm. The colour is mainly brown.Distribution and habitatThe species occurs in south-eastern Australia in woodland habitats. The type locality is Adelaide.BehaviourThe pseudoscorpions are terrestrial predators.