Ryuthela sasakii

{{Short description|Species of spider}}

{{Speciesbox

| image = Ryuthela.sasakii.female.-.takinawa.jpg

| image_caption = A female Ryuthela sasakii

| taxon = Ryuthela sasakii

| authority = Ono, 1997

}}

Ryuthela saskii is a species of spider in the genus Ryuthela.{{Cite web |last=Bern |first=Natural History Museum |title=NMBE - World Spider Catalog |url=https://wsc.nmbe.ch/species/18780/Ryuthela_sasakii |access-date=2024-08-28 |website=wsc.nmbe.ch |language=en}}{{Cite web |title=Ryuthela sasakii |url=https://inaturalist.ca/taxa/360508-Ryuthela-sasakii |access-date=2024-08-28 |website=iNaturalist Canada |language=en}}{{Cite web |last=taxonomy |title=Taxonomy browser (Ryuthela sasakii) |url=https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&id=1285377 |access-date=2024-08-28 |website=www.ncbi.nlm.nih.gov}} The species is endemic to the Ryukyu Islands in Japan.