Scaffold web spider

Scaffold web spiders (Nesticidae) is a family of araneomorph spiders closely allied with tangle web spiders. Like the "Theridiidae", these spiders have a comb of serrated bristles on the hind tarsi that are used to pull silk bands from the spinnerets. It contains 16 genera and about 300 species,[1] many of which are associated with caves or overhangs.[2] The genus Nesticus is the type for the family and is found throughout the world. The related Eidmannella has speciated considerably in Texas caves and includes some extremely localized species that are considered threatened. One species, Eidmannella pallida, is found in caves and under overhangs, but also in agricultural fields and other habitats away from such restricted areas. The genus Carpathonesticus is found in central Eurasia.

Scaffold web spiders
Temporal range: Palaeogene–present
Nesticus sp., male
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Order: Araneae
Infraorder: Araneomorphae
Family: Nesticidae
Simon, 1894
16 genera, 303 species


As of April 2019, the World Spider Catalog accepts the following genera:[1]

The following extinct genera have been placed in the Nesticidae:[3]

  • Balticonesticus Wunderlich, 1986Palaeogene, Baltic amber
  • Eopopino Petrunkevitch, 1942 – Palaeogene, Baltic and Bitterfeld amber
  • Heteronesticus Wunderlich, 1986 – Palaeogene, Baltic amber
  • Hispanonesticus Wunderlich, 1986Neogene, Dominican amber

See also


  1. "Family: Nesticidae Simon, 1894". World Spider Catalog. Natural History Museum Bern. Retrieved 2019-04-22.
  2. Hedin, M.; Dellinger, B. (2005). "Descriptions of a new species and previously unknown males of Nesticus (Araneae: Nesticidae) from caves in Eastern North America, with comments on species rarity" (PDF). Zootaxa. 904.
  3. Dunlop, J.A.; Penney, D.; Jekel, D. (2015). "A summary list of fossil spiders and their relatives" (PDF). World Spider Catalog. Natural History Museum Bern. Retrieved 2015-11-11.
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