The Parahyidae was described by Harvey (1992) who suggested it was related to the Neobisiidae and Syarinidae.
The family consists of only a single genus and species, Parahya submersa (Bristowe).
Parahya submersa is found in littoral habitats in Australasia.
Harvey, M.S. (1992). The phylogeny and classification of the Pseudoscorpionida (Chelicerata: Arachnida). Invertebrate Taxonomy 6: 1373-1435.