Jorōgumo: The Spider Woman of Japanese Folklore

In an illustrated book published in 1776, the artist Toriyama Sekien drew a spider woman surrounded by tiny spiders breathing fire. The picture appears in the second volume of Gazu Hyakki Yagyō, the first title in Sekien’s four-part series of yōkai art books. The creature in that print is the jorōgumo (絡新婦), and its name was later borrowed for a real spider that English speakers now call the Joro spider.

Quick facts

• Verdict: Folklore, not an internet invention — the jorōgumo is a classical yōkai recorded in Edo-period kaidan (ghost-story) collections and in regional oral legend, and it should be read as tradition rather than as an account of real events.
• Name: Jorōgumo, a spider that takes the shape of a woman.
• Type: Shape-shifting yōkai of Japanese folklore.
• Earliest confirmed record: 1732, the publication year of Taihei Hyakumonogatari.
• Where it spread: Edo-period story collections, then regional legends attached to specific bodies of water — Jōren Falls in Izu, Shizuoka Prefecture, and Kuzubuchi in Sendai — and from there into modern novels, anime and video games.

What the story says

There is no single canonical jorōgumo tale. In Tonoigusa, a warrior sees through a woman’s disguise and cuts her; she escapes into the space above the ceiling, and the next day a spider one to two shaku long (a shaku is an old Japanese unit of length, a little under a foot) is found dead there with a sword wound, along with the remains of many people it was said to have killed. In Taihei Hyakumonogatari, a man is invited into a mansion that feels like something out of a ghost story and is deceived by a beautiful woman; when he gets away, all that is left by morning is a thick mat of spider webs under the eaves.

The traditional portrait behind both stories is consistent: the jorōgumo appears as a beautiful woman, deceives the person who meets her, binds them with silk, and drags them away, frequently into water, to devour them. The Jōren Falls legend survives in several incompatible versions. In one, a man finds spider silk wound around his leg, shifts the thread onto a tree stump, and the stump is hauled into the basin. In another, a woodcutter gets a dropped axe back from a beautiful woman on the condition that he tell no one; he breaks the promise at a gathering, falls asleep and never wakes. Other tellings end with the woodcutter’s body found floating in the basin, or with him vanishing beneath the water after asking a tengu for permission to marry.

Earliest confirmed record

No single “first sighting” can be pinned down, and the two encyclopaedic sources used here approach the dating differently. The Japanese Wikipedia article names Tonoigusa, Taihei Hyakumonogatari and Gazu Hyakki Yagyō but contains no CE years or Japanese era names at all, so nothing about when those works were compiled or printed can be established from its text. The English article likewise presents the two Edo collections without fixing them in time.

Where dates can be checked directly, the picture is clearer. Taihei Hyakumonogatari was published in 1732, which is the oldest publication date directly confirmable for the works involved. Sekien’s Gazu Hyakki Yagyō was published in 1776, and the jorōgumo entry with its illustration sits in the volume titled Yō, the second of the book’s parts. That gives two firm eighteenth-century anchors — a printed prose tale and a printed image — while Tonoigusa is cited by both Wikipedia articles as an Edo-period work without a year attached.

What is documented

What is solidly attested is the textual and pictorial tradition, not any event. Two separate Edo-period kaidan collections independently preserve stories of a spider that assumes a woman’s shape, and the two differ in structure: one ends in discovery and death above a ceiling, the other in an empty house and a mass of webbing. The yōkai then enters the visual canon through Sekien, whose image depicts a woman with fire-breathing spiderlings.

Also documented is the geographic spread. Both Wikipedia articles record local legends attaching the jorōgumo to particular waters, including Jōren Falls and Kuzubuchi near Sendai, and the tradition that the master of the falls is a jorōgumo is catalogued in the Kaii Yōkai Densho Database maintained by the International Research Center for Japanese Studies. Jōren Falls itself is a real waterfall in Izu City, Shizuoka Prefecture. Finally, there is the naming overlap: the spider species Trichonephila clavata takes its Japanese common name from the yōkai, and the same animal is reported in English-speaking countries as an invasive “Joro spider.” The connection is lexical only. Nothing in the folklore describes the biology of a living spider, and nothing about the living spider’s behaviour derives from the folklore.

What is contested

Almost every narrative detail is unstable. The Jōren Falls legend alone survives in several mutually incompatible versions, which the sources present as parallel tellings rather than as one story with corruptions. The woman’s described age swings across decades depending on the telling. The dating of Tonoigusa is simply not supplied by the encyclopaedic sources used here.

Adaptations

The jorōgumo remains a working piece of the modern monster vocabulary. English Wikipedia lists the 2012 original video animation Wasurenagumo (released in English as Li’l Spider-Girl) and Alma Katsu’s 2022 novel The Fervor, along with characters drawn from the figure in Demon Slayer, One Piece, Monster Hunter Rise and Yo-kai Watch Shadowside. The Joro spider, now reported abroad as an invasive species, carries the name in an entirely different direction.

How it is discussed in Japan today

Ocsoku, a Japanese occult blog, has covered the subject in five posts published between 2015 and 2019.