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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 size of Megarachne compared to a human. ... but the giant spider was renamed as an unspecified species belonging to the primitive spider suborder Mesothelae, ...
2.9 Size. 2.10 Coloration. 3 Ecology and behavior. ... The only living members of the primitive Mesothelae are the family Liphistiidae, found only in Southeast Asia, ...
The Mesothelae - a monograph of an exceptional group of spiders (Araneae: Mesothelae): (Morphology, behavior, ecology, taxonomy, distribution and phylogeny).
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Members of the Heptathelidae share features with the other Mesothelae family, Liphistiidae. They are medium to large spiders. They have downward pointing, daggerlike chelicerae. [10]
Qiongthela ranges in size from 13-31mm in length (excluding the chelicerae). The male's palp has a long, blade-like conductor with a slightly hook-like apex. The tegulum has two margins and the paracymbium is spinose. Females have two paired receptacular clusters, situated on the anterior edge of the bursa copulatrix.
Spiders' legs are made up of seven segments. Starting from the body end, these are the coxa, trochanter, femur, patella, tibia, metatarsus and tarsus. The tip of the tarsus bears claws, which vary in number and size. Spiders that spin webs typically have three claws, the middle one being small; hunting spiders typically have only two claws.