Synsphyronus hadronennus
Synsphyronus hadronennus is a species of pseudoscorpion in the Garypidae family. It is endemic to Australia. It was described in 1987 by Australian arachnologist Mark Harvey. The specific epithet hadronennus comes from the Greek hadros and nennos, referring to the species’ apparently close relationship with its smaller relatives, S. paradoxus and S. heptatrichus.