Tags: Arachnid.
The Chthonioidea are a superfamily of pseudoscorpions. The superfamily contains two families:Tridenchthoniidae — worldwide (c. 17 genera 70 species)Chthoniidae — worldwide (c. 30 genera 600 species)Some authors consider the genus Lechytia to be in its own family Lechytiidae rather than to reside in Chthoniidae. The fossil species Dracochela deprehendor from the Devonian is grouped in the family Dacochelidae.