{{Short description|Genus of spiders}} {{Automatic taxobox | name = | image = Usofila flava 171721107.jpg | image_caption = female ''U. flava'' | image2 = Usofila pacifica 460546018.jpg | image2_caption = ''U. pacifica'' | taxon = Usofila | authority = [[Eugen von Keyserling|Keyserling]], 1891<ref name=wsc /> | type_species = ''[[Usofila gracilis|U. gracilis]]'' | type_species_authority = Keyserling, 1891 | subdivision_ranks = Species | subdivision = 4, [[#Species|see text]] }}

'''''Usofila''''' is a [[genus]] of [[United States|American]] [[Telemidae|long-legged cave spiders]] that was first described by [[Eugen von Keyserling]] in 1891.<ref name=Keys1891 /> Originally placed with the [[Ochyroceratidae]], it was transferred to the [[Telemidae]] in 1973.<ref name=Brig1973 />

All species are found in the United States, with ''U. pacifica'' extending to Canada and Alaska.<ref name=wsc />

==Species==

{{as of|2025|10}}, this genus includes four species:<ref name="wsc" /> {{Div col}} * ''[[Usofila flava]]'' <small>[[Ralph Vary Chamberlin|Chamberlin]] & Ivie, 1942</small> – [[United States]] * ''[[Usofila gracilis]]'' <small>[[Eugen von Keyserling|Keyserling]], 1891</small> – United States (type species) * ''[[Usofila oregona]]'' <small>Chamberlin & Ivie, 1942</small> – United States * ''[[Usofila pacifica]]'' <small>([[Nathan Banks|Banks]], 1894)</small> – [[Alaska]], [[Canada]], United States {{Div col end}}

;Formerly included *''Usofila pecki'' <small>[[Paolo Brignoli|Brignoli]], 1980</small> = ''[[Telemofila|Telemofila pecki]]''

==See also== *''[[Telema]]''

==References== {{Reflist|refs= <ref name="wsc">{{cite web | url=https://wsc.nmbe.ch/genus/3229 | title=Gen. ''Usofila'' Keyserling, 1891 | publisher=World Spider Catalog | doi=10.24436/2 | accessdate=2025-10-09}}</ref> <ref name="Brig1973">{{cite journal| last=Brignoli| first=P. M.| year=1973| title=I Telemidae, una famiglia di ragni nuova per il continente americano (Araneae)| journal=Fragmenta Entomologica| volume=8| page=248| author-link=Paolo_Brignoli}}</ref> <ref name="Keys1891">{{cite book| last=Keyserling| first=E.| year=1891| title=Die Spinnen Amerikas. Brasilianische Spinnen| publisher=Nürnberg 3| pages=1–278| author-link=Eugen_von_Keyserling}}</ref> }}

==External links== * {{inaturalist taxon}}

{{Taxonbar| from=Q2234725}}

[[Category:Telemidae genera]] [[Category:Spiders of the United States]] [[Category:Taxa named by Eugen von Keyserling]] [[Category:Telemidae]]

{{Telemidae-stub}}