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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 and Heptathelidae . Alternatively, the Heptathelidae can be treated as a subfamily of a more broadly circumscribed Liphistiidae.
The genus was first named as Eothele by Paul A. Selden in 1996. However, this name had already been used for a Cambrian brachiopod, so in 2000, Selden proposed the replacement name Palaeothele.
The group was first proposed by Kyukichi Kishida in 1923, when he described a new genus, Heptathela, and suggested creating two tribes within the family Liphistiidae, with Heptathela placed in Heptatheleae. [3]
Pages in category "Mesothelae" The following 2 pages are in this category, out of 2 total. This list may not reflect recent changes. ...
Ecologists have proposed a wide range of factors determining the slope and elevation of the species–area relationship. [2] These factors include the relative balance between immigration and extinction, [ 3 ] rate and magnitude of disturbance on small vs. large areas, [ 3 ] predator-prey dynamics, [ 4 ] and clustering of individuals of the ...
Mesothelae have a segmented abdomen with tergite plates, whereas Opisthothelae have fused abdominal segments and lack tergite plates. [4] The almost total absence of ganglia in the abdomen of Opisthothelae. The almost median position of the spinnerets in the Mesothelae compared with the hindmost position of those of the Opistothelae. [4]
Following the branching into the suborders of Mesothelae and Opisthothelae, the mygalomorphs retained them, while their fellow Opisthothelae members, the araneomorphs, evolved new "modern" features, including a cribellum and cross-acting fangs. [2]
The genus Liphistius was erected by Jørgen M. C. Schiødte in 1849. [1] Schiødte spelt the name Lipistius; [2] this was corrected to Liphistius by Tamerlan Thorell in 1869, a change endorsed by the International Commission on Zoological Nomenclature in 1970. [3]