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 C. [Clayton Hoff|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.