Araneida is a subgroup of

Tetrapulmonata Tetrapulmonata is a non-ranked supra-ordinal clade of arachnids. It is composed of the extant orders Thelyphonida (whip scorpions), Schizomida (short-tailed whip scorpions), Amblypygi (tail-less whip scorpions) and Araneae (spiders). It is th ...

. It was originally defined by

Jörg Wunderlich Jörg Wunderlich (born 19 December 1939) is a German arachnologist and palaeontologist. He is best known for his study of spiders in amber, describing over 1000 species, 300 genera, 50 tribes/subfamilies and 18 families in over 180 publications. ...

in 2015 as a subgroup of Araneae, including all true spiders, with Wunderlich also including

Uraraneida Uraraneida is an extinct order of arachnids, known from fossils of Middle Devonian, Permian and possibly Cretaceous age. Two genera of fossils have been definitively placed in this order: ''Attercopus'' from the Devonian of United States and ''P ...

within Araneae., cited in Araneida was redefined by Wunderlich in 2019 to include all modern spiders (

Araneae Spiders (order Araneae) are air-breathing arthropods that have eight legs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude silk. They are the largest order of arachnids and rank seventh in total species dive ...

), as well as Chimerarachnida, but excluding Uraraneida. Chimerarachnida and Araneae both possess

spinnerets A spinneret is a silk-spinning organ of a spider or the larva of an insect. Some adult insects also have spinnerets, such as those borne on the forelegs of Embioptera. Spinnerets are usually on the underside of a spider's opisthosoma, and are ...

, which are absent in Uraraneida. Uraraneida and Araneida are grouped together in the clade Serikodiastida.Wunderlich, J. 2019
What is a spider?
Beiträge zur Araneologie 12: 1–32.

References

Spiders Arthropod suborders {{spider-stub

See also

References