Opisthothelae is a suborder of spiders within the order Araneae, containing Mygalomorphae and Araneomorphae, but excluding Mesothelae. The Opisthothelae are sometimes presented as an unranked clade[2][3] and sometimes as a suborder of Araneae.[2] In the latter case, Mygalomorphae and Araneomorphae are treated as infraorders.
Araneae
Mesothelae
Opisthothelae
Mygalomorphae
Araneomorphae
The creation of this taxon has been justified by the need to distinguish these spiders from the Mesothelae, which display more primitive characteristics. The characteristics that distinguish between the Mesothelae and Opisthothelae are:
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]
^Cite error: The named reference DunlPenn11 was invoked but never defined (see the help page).
^ abCite error: The named reference taxonomicon was invoked but never defined (see the help page).
^Cite error: The named reference Coddington was invoked but never defined (see the help page).
^ abSingh, Rajendra; Singh, Garima (2020). "DIVERSITY OF MYGALOMORPH SPIDERS (ARANAE: OPISTHOTHELAE) IN INDIA". International Journal of Biological Innovations. 02 (02): 178–201. doi:10.46505/ijbi.2020.2215. ISSN 2582-1032.
Opisthothelae is a suborder of spiders within the order Araneae, containing Mygalomorphae and Araneomorphae, but excluding Mesothelae. The Opisthothelae...
dividing spiders into two subgroups, Mesothelae for Liphistius, and Opisthothelae for all other spiders. The names refer to the position of the spinning...
infraorders, Mygalomorphae and Araneomorphae, grouped into the suborder Opisthothelae. The Mesothelae, with about 140 species in 8 genera as of October 2020[update]...
into the suborders of Mesothelae and Opisthothelae, the mygalomorphs retained them, while their fellow Opisthothelae members, the araneomorphs, evolved...
ἀράχνης arákhnēs. Spiders are divided into two suborders, Mesothelae and Opisthothelae, of which the latter contains two infraorders, Mygalomorphae and Araneomorphae...
Classification Glossary Taxonomy Araneomorphae Mesothelae Mygalomorphae Opisthothelae List of families of spiders Lists of spider species Anatomy Arthropod...
description of new extinct families of the suborders Mesothelae and Opisthothelae, as well as notes on the taxonomy, the evolution and the biogeography...