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Brief Summary

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The spider family Leptonetidae includes 271 described species in Europe, Asia, and North and Central America (Platnick 2013), including 40 that occur in North America north of Mexico (Ledford et al. 2005). Many additional species are known that have not yet been formally described (Ledford 2004; Bradley 2013). These tiny spiders are found in damp, dark microhabitats under rocks, in log and leaf litter, and in caves. The web built by some is a small tangle or tightly woven sheet beneath which the spider hangs. When disturbed, it drops from the web and folds its legs close to the body. (Ledford et al. 2005; Bradley 2013)

Leptonetids have six eyes (the anterior median eyes are absent), either in a tight cluster or with one pair set well behind the others; some cave-dwelling species lack eyes altogether.The males of many species have relatively long palps and the female reproductive structures are not visible externally. An unusual feature of this family is that if a spider loses a leg, it usually separates at the joint between the patella and tibia, rather than farther toward the base, between the coxa and trochanter, as in most spiders. (Ledford et al. 2005; Bradley 2013)

Two leptonetids, Tayshaneta microps (=Neoleptoneta microps) and T. myopica (=N. myopica=Leptoneta myopica) are among the handful of spider species listed as endangered under the U.S. Endangered Species Act (Ledford et al. 2012) (Ledford et al. [2011] concluded that Neoleptoneta was paraphyletic and segregated the species in the genus into several different genera).

Ledford (2004) reported on the morphology, distribution, and natural history of Calileptoneta, including an account of courtship and mating in Calileptoneta ubicki.

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Leptonetidae

provided by wikipedia EN

Leptonetidae is a relatively primitive family of spiders first described by Eugène Simon in 1890.[1] It is made up of tiny haplogyne spiders, meaning they lack the hardened external female genitalia. Their six eyes are arranged in a semicircle of four in front and two behind. Many live in caves or in leaf litter around the Mediterranean, and in Eurasia, Japan and southern North America.[2]

Genera

As of April 2019, the World Spider Catalog accepts the following genera:[2]

See also

References

  1. ^ Simon, E. (1890). Etudes arachnologiques.
  2. ^ a b "Family: Leptonetidae Simon, 1890". World Spider Catalog. Natural History Museum Bern. Retrieved 2019-04-21.
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Leptonetidae: Brief Summary

provided by wikipedia EN

Leptonetidae is a relatively primitive family of spiders first described by Eugène Simon in 1890. It is made up of tiny haplogyne spiders, meaning they lack the hardened external female genitalia. Their six eyes are arranged in a semicircle of four in front and two behind. Many live in caves or in leaf litter around the Mediterranean, and in Eurasia, Japan and southern North America.

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cc-by-sa-3.0
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Wikipedia authors and editors
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wikipedia EN