Antrodiaetidae

Folding trapdoor spiders Temporal range: Cretaceous–present PreꞒ Ꞓ O S D C P T J K Pg N
Antrodiaetus unicolor, female
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Chelicerata
Class:	Arachnida
Order:	Araneae
Infraorder:	Mygalomorphae
Clade:	Atypoidea
Family:	Antrodiaetidae Gertsch, 1940
Genera
See text.
Diversity
2 genera, 35 species

Antrodiaetidae, also known as folding trapdoor spiders or folding-door spiders, is a small spider family related to atypical tarantulas. They are found almost exclusively in the western and midwestern United States, from California to Washington and east to the Appalachian mountains.^[1] Exceptions include and , which are endemic to Japan and are considered relict species. It is likely that two separate vicariance events led to the evolution of these two species.^[2]

Genera[]

As of July 2020, the World Spider Catalog accepted the following genera:^[1]

• Aliatypus Smith, 1908 — United States
• Antrodiaetus Ausserer, 1871 — United States, Japan
• Atypoides O. Pickard-Cambridge, 1883 — United States
• Hexura Simon, 1884 — United States

Name[]

The name “folding-door” describes how they open or close the entrance to their burrow; they unfold or fold the door.

See also[]

• List of Antrodiaetidae species

References[]

• 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)

External links[]

Wikispecies has information related to Antrodiaetidae.

Wikimedia Commons has media related to Antrodiaetidae.

• Images of a folding trapdoor spider

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