Australian Biological Resources Study

Australian Faunal Directory


Regional Maps

Superfamily CHTHONIOIDEA Daday, 1888

Compiler and date details

Mark S. Harvey, Western Australian Museum, Perth, Western Australia, Australia


The Chthonioidea have traditionally been considered to comprise one or two families, but Harvey (1992) added another, elevating the Lechytiini to full family level. He also included the Devonian family Dracochelidae (Schawaller, Shear & Bonamo 1991), the oldest known pseudoscorpion.

The Australian chthonioid fauna includes described species in Chthoniidae and Tridenchthoniidae, and a single undescribed species of Lechytia (Lechytiidae), recorded from eastern Queensland (Harvey, unpublished data).



The Chthonioidea differ from all other pseudoscorpions by the presence of trichobothria ib and isb on the dorsum of the chelal hand, a straight median maxillary lyrifissure, a lateral apodeme frame in the female genitalia, and an anterior protuberance on coxa I.


History of changes

Note that this list may be incomplete for dates prior to September 2013.
Published As part of group Action Date Action Type Compiler(s)
31-Oct-2012 31-Oct-2012 MODIFIED
12-Feb-2010 (import)