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Sicariidae
Sicariidae is a family of six-eyed venomous spiders known for their necrotic bites. The members of this family are haplogyne, possessing unsclerotised genitals in females. The family consists of two genera, ''Loxosceles'' and ''Sicarius'', and contains about 132 species. Well known spiders in this family include the brown recluse spider and the assassin spider.
==Description==
The genus ''Loxosceles'', commonly known as recluse spiders or violin spiders, is distributed nearly worldwide in warmer areas. The genus ''Sicarius'', or assassin spiders, are desert spiders that live in the Southern Hemisphere, in (South America and Africa), known primarily for their self-burying behavior. All have six eyes arranged in three groups of two (dyads) and the violin spiders are usually brownish with a darker brown characteristic violin marking on the cephalothorax. ''Sicarius'' resembles the crab spiders of the family Thomisidae and lacks this marking. Individual ''Sicarius'' can live for as much as 15 years, which makes these among the longest-lived araneomorphae spiders (some tarantulas can live well over 20–30 years.) Most ''Loxosceles'' can live for one and a half to two years. Members of both genera can live for very long times without food or water.
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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