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The Spider Myths Site
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Just Plain Weird Stories

Myth: Spiders can lay their eggs under human skin in wounds created by their bites.

Fact: In a surprisingly widespread urban legend, a nameless woman is bitten by a spider (usually on her cheek) while on vacation. She later develops a swelling, from which, in due course, baby spiders emerge! Somehow or other, the venom must have transformed into eggs. Spiders, need I say, do not find the human body a suitable site for egglaying, and no actual case anything like this can be found anywhere in scientific or medical literature.

That is, unless you count as scientific literature the book Dancing in the Mind Field by Nobel Prize chemist Kary Mullis. In one chapter, Mullis claims to have been bitten by a brown recluse spider in California (where no such spiders exist), that other spiders came back to feed on the resulting wound, and that female brown recluses lay their eggs in such wounds to feed their babies. All this is sheer fantasy. As the name implies, real recluse spiders avoid humans like the plague if at all possible.

This legend is still alive and well; in September 2008 a correspondent claimed it happened to the usual un-named "friend," who of course didn't preserve the evidence! In 2006 another person said they'd heard this one combined with the bubble gum legend by a cousin who allegedly "had a swollen jaw, went to the dentist. When the dentist probed the inflamed area, it burst, and millions of tiny spiders ran out. The cousin had gotten the eggs in her mouth from bubble gum!" Yet another person suggested this legend began in Nicholas Conde's 1982 novel The Religion, but it really dates back much farther.

Myth: "Hedge apples" (Osage orange fruit) or horse chestnuts can be used to repel spiders.

Photo of large Osage orange fruit
Large Osage orange fruit
Maclura pomifera
© 2002 Steve Baskauf

Fact: The story that the fruit of the Osage orange tree (also called hedge apple, monkey ball, or spider ball) can repel or ward off spiders turns out to be extremely widespread in Midwestern states, where the trees are common. Details vary, but in general it seems that people put these aromatic fruits around their walls in fall to "keep spiders from coming in." Since house spiders don't actually come in from outside, of course this works just fine, but there is no evidence that spiders are repelled by osage-oranges. They live on the trees and even make webs on the fallen fruit. What's more, spiders seldom show any sign of being able to detect airborne odors!

In some versions of the story, the repellent effect has been transferred from spiders to cockroaches, mosquitoes, chicken mites, or mice. Since squirrels regularly chew through these fruits to get the tasty seeds inside, a rodent repellent effect seems pretty unlikely. A recent study did find some cockroach repellency in a purified extract from the fruit – but not in the whole fruit.

In the Pacific Northwest, where Osage oranges are seldom seen, the legend has been transferred to horse chestnuts. I like horse chestnuts and usually have some around, but still have plenty of spiders, so I know of my own experience that this doesn't work.

A correspondent in British Columbia has heard a version of the myth in which the spiders are repelled by copper pennies!



Text © 2005-2008, Burke Museum of Natural History & Culture,
University of Washington, Box 353010, Seattle, WA 98195, USA
Phone: 206-543-5590
Photos © as credited
Queries to Spider Myths author, Rod Crawford

This page last updated 2 September, 2010

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