The Mesothelae are a suborder of spiders. The division of extant members of the suborder into families has varied. A single extant family Liphistiidae may be accepted, with two subfamilies: Liphistiin
Heptathela higoensis
Liphistius malayanus, a member of the Liphistiinae
Heptathela kimurai, a member of the Heptathelinae
Qiongthela bawang, a member of the Heptathelinae
The Mygalomorphae, or mygalomorphs, are an infraorder of spiders, and comprise one of three major groups of living spiders with over 3,000 species, found on all continents except Antarctica. Many memb
Mesothelae
…all other spiders. In Greek, μέσος (mesos) means "middle", and θήλα (thēla) "teat". Pocock divided his Opisthothelae into two groups, which he called Mygalomorphae and Arachnomorphae (now Araneomorphae), implicitly adopting the phylogeny shown below. Pocock's approach was criticized by other arachnologists. Thus…
Chelicerae of a black wishbone spider (Nemesiidae)
Sphodros rufipes, an atypical mygalomorph
Platycryptus Undatus Female