Newly discovered tarantula-killing worm named after Jeff Daniels, obviously

"When I first heard a new species of nematode had been named after me, I thought, ‘Why? Is there a resemblance?’"
By Shannon Connellan  on 
A film still from "Arachnophobia" with actor Jeff Daniels holding a shovel.
When you read what happens to the real spiders, someone should really make a movie about these villainous worms. Credit: Ralph Nelson / Hollywood / Amblin / Kobal / Shutterstock

In what might be one of the nerdiest film references from scientists to date, Jeff Daniels now has a parasitic worm named after him.

Newly discovered by scientists at the University of California, Riverside, the "Tarantobelus jeffdanielsi" is a nematode capable of killing tarantulas. The name is a nod to the 1990 classic horror-comedy, Arachnophobia, in which Daniels starred.

With research published in the Journal of Parasitology, scientists claim this nematode — a microscopic worm-like organism, some of which act as parasites — is only the second ever found to infect tarantulas.

In Frank Marshall's '90s film, Daniels' character, Ross Jennings, faces attacks from a new species of deadly arachnids in the small town of Canaima, California.

"His character in the film is a spider killer, which is exactly what these nematodes are," UC Riverside parasitologist and lead researcher Adler Dillman told the university's news site. But in this case, it's the clearly worms that are the villain.

And look at it:

Image of the tarantula-killing parasite Tarantobelus jeffdanielsi.
Behold, Tarantobelus jeffdanielsi. Credit: Adler Dillman / UCR

Informed of the discovery and its title, Daniels offered up the perfect response for someone who's had a worm named after them.

"When I first heard a new species of nematode had been named after me, I thought, 'Why? Is there a resemblance?'" Daniels told UCR. "Honestly, I was honored by their homage to me and Arachnophobia. Made me smile. And of course, in Hollywood, you haven’t really made it until you’ve been recognized by those in the field of parasitology."

Film still from "Arachnophobia" starring Jeff Daniels, Brian Mcnamara, Julian Sands in a lab.
Not pictured: The actual scientists involved with the discovery. Credit: Moviestore / Shutterstock

According to the university, the study began in 2019 when lead researcher Dillman was contacted by a tarantula breeder whose spiders had been plagued by infection. Study found these to be nematodes, heralding a particularly nasty plight for the spiders. Infection from the jeffdanielsi worms was found to be lethal, with the parasitic creatures only inhabiting the tarantulas' mouths (!) and paralyzing the organs that work a tarantula's fangs. Meaning the tarantualas were dying of starvation.

"It may take months because tarantulas don't have to eat particularly often. However, if they get this infection, they will die of starvation," Dillman told UCR. "It isn't clear that the nematodes feed on the spider itself. It’s possible that they feed on bacteria that live on the tarantulas."

They've yet to discover how exactly the worms are able to control the tarantula's fang organs and stop them eating (again, what). The researchers have discovered how the jeffdanielsi worms reproduce, being mostly self-fertilizing, and that a single worm can produce 160 babies over its 11-day lifespan.

However horrific this all is, it's a fun day for fans of Arachnophobia.

A black and white image of a person with a long braid and thick framed glasses.
Shannon Connellan

Shannon Connellan is Mashable's UK Editor based in London, formerly Mashable's Australia Editor, but emotionally, she lives in the Creel House. A Tomatometer-approved critic, Shannon writes about everything (but not anything) across entertainment, tech, social good, science, and culture.


Recommended For You
NASA discovered bacteria that wouldn't die. Now it's boosting sunscreen.
NASA science improving sun protection

HP Chromebook Plus 15.6-inch review: A big-screened budget laptop for the right user
a side angled view of the hp chromebook plus 15.6-inch on a wooden table

You can now watch TCM classic movies on Fandango's streaming service
James Dean and Natalie Wood huddle together on the bonnet of a car in the film "Rebel Without a Cause".

The best laptops for students: MacBooks, Microsoft Surface, and more
By Miller Kern, Leah Stodart, and Dylan Haas
Person using Apple MacBook Pro.

John Oliver uses a brutal parody ad to take aim at Medicaid
A man in glasses and a suit sits at a talk show desk, In the top left is an image with the word "medicaid".

More in Entertainment
Apple quiet about its iPhone 'spyware attack' warnings — but the mystery may be solved
iPhone 15

iPhone 16: Every single thing we know so far
Illustration of iPhone 16 rumor investigation

iOS 18: The ‘Notes’ app is reportedly getting 2 new features
Calculator app and Notes app on iOS


Amazon deal of the day: The Apple Watch Series 9 just hit a new low
Samsung The Frame TV, Apple Watch, Amazon Echo Buds, and Mac Mini with purple gradient background

Trending on Mashable
NYT Connections today: See hints and answers for April 17
A phone displaying the New York Times game 'Connections.'

Wordle today: Here's the answer and hints for April 17
a phone displaying Wordle


NYT's The Mini crossword answers for April 17
Closeup view of crossword puzzle clues

New Boston Dynamics robot is pure nightmare fuel
Boston Dynamics All New Atlas
The biggest stories of the day delivered to your inbox.
This newsletter may contain advertising, deals, or affiliate links. Subscribing to a newsletter indicates your consent to our Terms of Use and Privacy Policy. You may unsubscribe from the newsletters at any time.
Thanks for signing up. See you at your inbox!