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 known record: 1732, the publication year of Taihei Hyakumonogatari. Tonoigusa was printed earlier, in 1677, but its jorōgumo tale has not been confirmed in that edition.
• Where it spread: Edo-period story collections, then regional legends attached to specific bodies of water — Jōren Falls in Izu, Shizuoka Prefecture, and Kashikobuchi 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; the Shizuoka prefectural history records this type, with a farmer and a mulberry stump. 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 known record

No single “first sighting” can be pinned down. General reference accounts name Tonoigusa, Taihei Hyakumonogatari and Gazu Hyakki Yagyō as the key early works, but they attach no CE years or Japanese era names to the two Edo collections, so their dates have to be checked against library catalogues.

Where dates can be checked directly, the picture is clearer. Taihei Hyakumonogatari was published in 1732, the oldest date that can be tied directly to a jorōgumo tale. 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.

Tonoigusa can now be dated as a book. The Toyama University Library catalogue records it as a kaidan collection by Ogita Ansei, published in Kyoto in 1677 (Enpō 5), 55 years before Taihei Hyakumonogatari. It has not been confirmed, however, that the ceiling-space story is in that 1677 printing, so this article keeps 1732 as the earliest confirmed record and treats 1677 as the date of the older book, not of the jorōgumo’s first appearance.

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. Local legends attach the jorōgumo to particular waters, including Jōren Falls and Kashikobuchi near Sendai. Jōren Falls itself is a real waterfall in Izu City, Shizuoka Prefecture.

The falls tradition appears in an official regional record. The Kaii Yōkai Densho Database, maintained by the International Research Center for Japanese Studies, catalogues two passages from the Shizuoka Prefectural History (Materials vol. 23, Folklore 1, 1989) stating that the master of Jōren Falls is a jorōgumo. One passage gives a brief version of the tale: a farmer resting above the falls finds that a spider has wound thread around his foot. He hangs the thread on a mulberry stump, the ground shakes, and the stump is swallowed by the falls.

The same database holds the Sendai legend under the name Kashikobuchi, a pool in Aoba Ward, drawn from the Miyagi Prefectural History (Folklore 3, 1956). There the master of the pool is a great spider. A man fishing from a rock on the bank keeps wiping off something the spider has stuck to his shin and pressing it onto a large willow. Eventually the willow is torn out by its roots and pulled into the pool. A voice from the bottom then says “kashikoi, kashikoi”, meaning “clever, clever”. The pool’s name begins with the same character as that word.

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 two database entries drawn from the 1989 prefectural history contain only the stump type; the axe-and-woodcutter and marriage tellings do not appear in them. The woman’s described age swings across decades depending on the telling. Tonoigusa’s publication year is fixed at 1677, but whether its jorōgumo tale was in that edition is unconfirmed.

What the sources add

The library catalogues and prefectural histories mostly confirm the outline of the jorōgumo tradition, but they correct and sharpen it in three places.

On dates, they separate the age of a book from the age of a story. Tonoigusa is fixed as a 1677 Kyoto printing, 55 years older than Taihei Hyakumonogatari, which settles which collection came first. The catalogue does not show that the spider tale sits in that edition, so the older book does not automatically become the older record.

On place names, the Miyagi Prefectural History gives the Sendai site as Kashikobuchi, correcting a misreading in earlier versions of this article. It also records closing words, “kashikoi, kashikoi”, that echo the pool’s name. Notably, the record calls the creature a great spider rather than using the word jorōgumo.

On the shape of the legend, the two prefectural records point the same way. Jōren Falls and Kashikobuchi share a plot: a spider at the water’s edge fixes something to a person’s leg, the person transfers it to a tree — a mulberry stump in Shizuoka, a large willow in Sendai — and the tree is pulled under. In both entries the spider is the master of the water, and the beautiful woman does not appear. That figure is carried by the Edo collections, Sekien’s print and the other Jōren Falls tellings. The regional records preserve something closer to a water-spirit tale, in which the human escapes by passing the thread to a tree.

Adaptations

The jorōgumo remains a working piece of the modern monster vocabulary. Modern examples include 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.