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Wafer trapdoor spider
The wafer trapdoor spiders, family Cyrtaucheniidae,〔Raven, R.J. 1985. The spider Infraorder Mygalomorphae (Araneae): cladistics and systematics. ''Bulletin of the American Museum of Natural History'' 182: 1-180.〕 are a widespread family of spiders that lack the thorn-like spines on tarsi and metatarsi I and II (the two outermost leg segments) found in true trapdoor spiders (Ctenizidae).
==Biology==
Many, but not all, make wafer-like doors to their burrows, while others build the cork-like doors found commonly in the true trapdoor spiders. The biology of nearly all the species is poorly known.
The monotypic ''Angka hexops'' has only six eyes, with the posterior median eyes missing. It is up to 15 mm long in both sexes.〔Murphy, Frances & Murphy, John (2000). ''An Introduction to the Spiders of South East Asia''. Kuala Lumpur: Malaysian Nature Society.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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