Longistylus

{{Short description|Genus of spiders}}

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{{Speciesbox

| taxon=Longistylus ygapema

| authority=Indicatti & Lucas, 2005

}}

Longistylus is a genus of spiders in the family Pycnothelidae. It was first described in 2005 by Indicatti & Lucas. {{As of|2017}}, it contains only one Brazilian species, Longistylus ygapema.{{cite web|title=Pycnothelidae| website=World Spider Catalog| publisher=Natural History Museum Bern| accessdate=2017-03-27| url=http://www.wsc.nmbe.ch/genus/2018}}