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Pseudoscorpiones: Systematics & Taxonomy

There are nearly 3,600 named species in 460 genera divided among 26 families. Pseudoscorpions are divided into two suborders: Epiocheirata and Iocheirata. The Epiocheirata comprises the rare Feaelloidea (two families) and the widespread Chthonioidea (four families). Recent molecular work suggests that Epiocheirata may not be monophyletic. Iocheirata, which is defined by the presence of venom glands in one or both chelal fingers, comprises five superfamilies, Neobisiidae (seven families), Garypoidea (six families), Cheiridioidea (two families), Sternophoroidea (one family) and Cheliferoidea (four families).

 

 

A summary list of fossil spiders and their relatives

Fossil spiders have not been fully cataloged since Bonnet’s Bibliographia Araneorum and are not included in the current World Spider Catalog. Since Bonnet’s time there has been considerable progress in our understanding of the fossil record of spiders – and other arachnids – and numerous new taxa have been described. For an overview see Dunlop & Penney (2012). Spiders remain the single largest fossil group, but our aim here is to offer a summary list of all fossil Chelicerata in their current systematic position; as a first step towards the eventual goal of combining fossil and Recent data within a single arachnological resource. 

http://www.wsc.nmbe.ch/resources/fossils/Fossils16.0.pdf

2020

LIRA, ANDRÉ F.A. ; BEDOYA-ROQUEME, EDWIN ; RODRIGUES, GILBERTO G. ; Tizo-Pedroso, Everton (2020):
New records of pseudoscorpions (Arachnida, Pseudoscorpiones) from the Caatinga biome, Brazil: a checklist and a map of species richness distribution. Checklist. 16: 471-484 DOI: 10.15560/16.2.471