Amaurobiidae

Tangled nest spiders
Callobius sp.
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Arachnida
Order: Araneae
Suborder: Araneomorphae
Superfamily: Amaurobioidea
Family: Amaurobiidae
Thorell, 1870
Genera

Callobius
Amaurobius
Pimus
Rubrius
many others

Diversity[1]
51 genera, 286 species

The Amaurobiidae are three-clawed cribellate or ecribellate spiders found in most parts of the world and difficult to distinguish from related spiders in other families, especially Agelenidae, Desidae and Amphinectidae. Their intra- and interfamilial relationships are contentious. According to the World Spider Catalog, 2017, the family Amaurobiidae includes 286 species in 51 genera.[2]

In Australia, they are small to medium-sized entelegyne spiders with generous sheet webs across the floor of rainforests. They generally have eight similar eyes in two conservatively curved rows. They often have a calamistrum on metatarsus IV associated with a cribellum. Australian amaurobiids may be distinguished from the Amphinectidae by the absence of a pretarsal fracture and the presence of a retrocoxal hymen on coxa I.[3]

Pimus sp.

See also

References

  1. ↑ World Spider Catalog, Family: Amaurobiidae. World Spider Catalog (2017). Natural History Museum Bern, online at http://www.wsc.nmbe.ch/familydetail/3, version 18.0, accessed on 2017-07-11
  2. ↑ World Spider Catalog, Family: Amaurobiidae. World Spider Catalog (2017). Natural History Museum Bern, online at http://www.wsc.nmbe.ch/familydetail/3, version 18.0, accessed on 2017-07-1
  3. ↑ Spiders of Australia


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