Incasoctenus is a monotypic genus of South American araneomorph spiders in the family Xenoctenidae, containing the single species, Incasoctenus perplexus. It was first described by Cândido Firmino de Mello-Leitão in 1942 and has only been found in Peru; only the female is known. Originally placed with the wandering spiders (Ctenidae), it was moved to the Xenoctenidae in 2017.
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