The spider family Antrodiaetidae (foldingdoor trapdoor spiders) includes 33 described species, 21 in the genus Antrodiaetus and 12 in the genus Aliatypus (Platnick 2013). These mygalomorph spiders occur in the continental United States, where they are widespread, and in British Columbia (Canada), as well as in Japan (according to Platnick , there are 31 species in North America north of Mexico and two species in Japan). The North American Antrodiaetus species inhabit three main geographic regions: the deciduous forests of the eastern United States, the forested “sky islands” of the southwestern United States, and various habitats throughout the northwestern United States and adjacent portions of southwestern Canada (Hendrixson and Bond 2007).
Antrodiaetids excavate burrows that they line with silk, at least near the entrance. Many Antrodiaetus species construct the foldingdoors that give this family its common name. These spiders build a burrow with a loose silk collar that is pliable and can be pulled together, forming an invisible seam. Another group of three species, which used to be classified in a separate genus (Atypoides) but are now merged into Antrodiaetus (Hendrixson and Bond 2007), build a burrow with a turret. Aliatypus species build a burrow with a thin, hinged trapdoor. When closed, collars and trapdoors are very difficult to locate because the external surface often closely matches the surrounding substrate. When active, these spiders open their collars or trapdoors at night and wait just inside the entrance to strike at passing prey that the spiders detect by sensing substrate vibrations. As is the case for many burrow-inhabiting spiders, most encounters with humans involve wandering males. When mature, males abandon their burrows during rainy periods and wander in search of females.
Key references on the natural history and systematics of these spiders are Coyle (1971) and Coyle and Icenogle (1994). Hendrixson and Bond (2005) demonstrated that Antrodiaetus unicolor is actually a complex of cryptic species. Cokendolpher et al. (2005) described four new Antrodiaetus species from southwestern Oregon (U.S.A.) and Hedin and Carlson (2011) described a new Aliatypus species from California.
(Coyle 2005; Bradley 2013)
Family Antrodiaetidae Gertsch 1940
Brachybothriinae Simon 1892: 193. Type genus, Brachybothrium Simon (= Antrodiaetus Ausserer).
Brachybothriidae Simon: Pocock 1903: 346.
Acattymidae Kishida 1930: 34. Type genus, Acattyma L . Koch (= Antrodiaetus Ausserer). Antrodiaetinae Gertsch 1940: 236. Type genus, Antrodiaetus Ausserer.
Antrodiaetidae Gertsch: Coyle 1971: 330-331; Raven 1985: 124; Eskov and Zonshtein 1990: 333.
- Hendrixson, BRENT E., Bond, Jason E. (2005): Two sympatric species of Antrodiaetus from southwestern North Carolina (Araneae, Mygalomorphae, Antrodiaetidae). Zootaxa 872, 1-19: 2-4, DOI:http://dx.doi.org/10.5281/zenodo.10086, URL:http://www.mapress.com/zootaxa/2005f/zt00872.pdf
Molecular Biology and Genetics
Statistics of barcoding coverage
Specimens with Sequences:179
Specimens with Barcodes:174
Species With Barcodes:24
Turret spiders (Atypoides/Antrodiaetus riversi; superfamily Atypoidea, family Antrodiaetidae, genus Atypoides, species: riversi) are medium-sized mygalomorph spiders native to Northern California that construct burrows with a cork-like trapdoor made of soil, vegetation and silk. This spider length is 13 to 18 millimetres (0.51 to 0.71 in) long, though females are larger than males.
- Raven, R. J. (1985). The spider Infraorder Mygalomorphae (Araneae): cladistics and systematics. Bulletin of the American Museum of Natural History 182: 1-180.
- "Turret Spider". insectidentification.org.
Antrodiaetids are found almost exclusively in the USA, in the west (California, Arizona, Nevada, Utah, Oregon, Washington, Idaho), the midwest (Missouri, Kansas, Arkansas, Illinois), and the east (centered in the Appalachian mountains).
Two species (Antrodiaetus roretzi and A. yesoensis) are endemic to Japan. They are considered relict species; two separate vicariance events probably led to the evolution of these two species (Miller & Coyle, 1996).
The three species of the former genus Atypoides are now included in the genus Antrodiaetus (Hendrixson & Bond, 2007).
- Marshal Hedin, personal communication (2006)
- Miller, J.A & Coyle, F.A. (1996). Cladistic analysis of the Atypoides plus Antrodiaetus lineage of mygalomorph spiders (Araneae, Antrodiaetidae). Journal of Arachnology 24(3):201-213. PDF - Abstract
- Hendrixson, B.E. & Bond, J.E. (2005). Two sympatric species of Antrodiaetus from southwestern North Carolina (Araneae, Mygalomorphae, Antrodiaetidae). Zootaxa 872:1-19. PDF (A. unicolor, A. microunicolor)
- Hendrixson, B.E. & Bond, J.E. (2007). Molecular phylogeny and biogeography of an ancient Holarctic lineage of mygalomorph spiders (Araneae: Antrodiaetidae: Antrodiaetus). Molec. Phylogen. Evol. 42: 738-755. doi:10.1016/j.ympev.2006.09.010
- Platnick, Norman I. (2008): The world spider catalog, version 8.5. American Museum of Natural History.
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