Overview

Brief Summary

The spider family Corinnidae (antmimic spiders) includes around 1083 species (Platnick 2013). In North America north of Mexico there are around 127 species, including several introduced species, with most of the diversity found in the southern portion of this region (Ubick and Richman 2005; Bradley 2013). Corinnids are generally ground dwellers and are commonly found beneath rocks and in leaf litter. Members of the genus Trachelas also occur on foliage and some species frequently enter houses, where they may be of minor medical concern (Platnick and Shadab 1974). The convergent cone-shaped spinnerets of corinnids distinguish them from ground spiders of the family Gnaphosidae, which have conspicuous cylindrical spinnerets that are often visible from above. Like most spiders, corinnids have eight eyes.

Although often brown, some corinnids are colorful. Ant mimicry is common in this family (and at least some species seem to be closely associated with ants) and some species are believed to be mimics of mutillid wasps. Although most corinnids are nocturnal, the ant mimics (as would be expected) tend to be diurnal. As is common for the families of two-clawed hunting spiders (dionychans), corinnids build sac-like retreats, often under rocks or other debris on the ground. The egg sacs, which are typically flat discs, may be deposited in the retreats or attached to the substrate (Comstock [1940] includes a photograph of egg cases of Castianeira descripta on the underside of a stone). Historically, corinnids were included in a family Clubionidae that was defined far more broadly than it is today.

(Ubick and Richman 2005; Bradley 2013)

  • Bradley, R.A. 2013. Common Spiders of North America. University of California Press, Berkeley.
  • Comstock, J.H. 1912. (Revised and edited by W.J. Gertsch 1940; reissued 1948 ). The Spider Book. Comstock Publishing Company, Ithaca, NY.
  • Platnick, N. I. 2013. The world spider catalog, version 14.0. American Museum of Natural History, online at http://research.amnh.org/entomology/spiders/catalog/index.html
  • Platnick, N.I. and M.U. Shadab. 1974. A revision of the tranquillus and speciosus groups of the spider genus Trachelas (Araneae, Clubionidae) in North and Central America. American Museum Novitates No. 2553: 1-34.
  • Ubick, D. and D.B. Richman. 2005. Corinnidae. Pp. 79-82 in D. Ubick, P. Paquin, P.E. Cushing, and V. Roth (eds.) Spiders of North America: an Identification Manual. American Arachnological Society.
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Comprehensive Description

CORINNIDAEAraneaeArachnidaArthropodaAnimalia

CORINNIDAE

  • Deltshev, Christo, Komnenov, Marjan, Blagoev, Gergin, Georgiev, Teodor, Lazarov, Stoyan, Stojkoska, Emilija, Naumova, Maria (2013): Faunistic diversity of spiders (Araneae) in Galichitsa mountain (FYR Macedonia). Biodiversity Data Journal 1, 977: 977-977, URL:http://dx.doi.org/10.3897/BDJ.1.e977
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CorinnidaeAnimalia

Corinnidae Karsch, 1880

  • Candek, Klemen, Gregoric, Matjaz, Kostanjsek, Rok, Frick, Holger, Kropf, Christian, Kuntner, Matjaz, Miller, Jeremy A., Hoeksema, Bert W. (2013): Targeting a portion of central European spider diversity for permanent preservation. Biodiversity Data Journal 1, 980: 980-980, URL:http://dx.doi.org/10.3897/BDJ.1.e980
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Hoeksema, Bert W.

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage

Barcode of Life Data Systems (BOLD) Stats
                                        
Specimen Records:717Public Records:104
Specimens with Sequences:592Public Species:10
Specimens with Barcodes:543Public BINs:11
Species:125         
Species With Barcodes:98         
          
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Barcode data

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Locations of barcode samples

Collection Sites: world map showing specimen collection locations for Corinnidae

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Wikipedia

Corinnid sac spider

The corinnid sac spiders (family Corinnidae), like the other clubionoid families, have a very confusing taxonomic history. Once this family was a part of the large catch-all taxon Clubionidae, now a shadow of its former self. The clubionoids are apparently similar only in that they have eight eyes arranged in two rows, conical anterior spinnerets that touch and are generally wandering predators that build silken retreats, or sacs, usually on plant terminals, between leaves, under bark or under rocks.

Among the families formerly classified as "Clubionidae", some of which have common names including the words "sac spider", include:

The Corinnidae, as now recognized, contains 75 genera and over 900 species worldwide, making it the largest of the "clubionoid" families. Among the common genera are Castianeira (nearly world wide), Corinna (widespread), Meriola (New World), Phrurolithus (widespread), Phrurotimpus (North America) and Trachelas (widespread).

Members of the genus Castianeira appear to be mimics of ants and velvet ants. Other corinnid ant-like genera include Mazax, Myrmecium and Myrmecotypus. The "phurolithines" (including Phrurolithus and Phrurotimpus) are tiny spiders often found in leaf litter that have many ventral spines on their first tibiae. The 'trachelines" (Meriola and Trachelas) are usually bicolored spiders with red-brown cephalothoraxes (carapaces) and dirty grey to yellowish abdomens. Corinna is the type genus for the family and consists of small running spiders.

Systematics[edit]

The categorization into subfamilies follows Joel Hallan.[1]

See also[edit]

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