The Mesothelae are a suborder of spiders (order Araneae). As of April 2024[update], two extant families were accepted by the World Spider Catalog, Liphistiidae...

spiders do not have antennae. In all except the most primitive group, the Mesothelae, spiders have the most centralized nervous systems of all arthropods,...

family contains the most basal living spiders, belonging to the suborder Mesothelae. The family has also been circumscribed more broadly to include the family...

April 2024[update] was accepted by the World Spider Catalog. It is placed in suborder Mesothelae, which contains the most basal living spiders. The group was first proposed...

order Araneae, containing Mygalomorphae and Araneomorphae, but excluding Mesothelae. The Opisthothelae are sometimes presented as an unranked clade and sometimes...

one suborder, Mesothelae, and two infraorders, Mygalomorphae and Araneomorphae, grouped into the suborder Opisthothelae. The Mesothelae, with about 140...

after Arika Kimura, who collected it in 1920. It belongs to the sub-order Mesothelae (primitive burrowing spiders) and can reach up to 3 cm in length. Its...

ISBN 978-0-19-973482-5 Haupt, J. (2004), The Mesothelae – a monograph of an exceptional group of spiders (Araneae: Mesothelae), Zoologica, Stuttgart: E. Schweizerbart...

distribution There is also one family of trapdoor spiders in the suborder Mesothelae: Liphistiidae, a family of spiders with armoured abdomens from Southeast...

commonly called trapdoor spiders. Like the "primitive" suborder of spiders Mesothelae, they have two pairs of book lungs, and downward-pointing chelicerae....