In case your nightmares haven't been flooded with enough bad things lately, scientists have discovered a new and equally terrifying trapdoor spider that's bigger than any humanity has discovered yet.

While trapdoor spiders can come in all kinds of different sizes, like the massive and nightmarish Euoplos dignitas, or the much smaller brush-footed trapdoor spider, like those found in Australia. Now ...

Scientists at the University of California, Davis, have discovered a new species of trapdoor spider lurking in California's coastal sand dunes. The newly identified Aptostichus ramirezae is a close ...

A trap door with silken hinges might sound like something out of a fairy tale, but it's actually something that comes out of some spiders — and there's a new species to add to the list. Researchers in ...

Deep in the Congo’s rainforests, locals have long described the J’ba Fofi—a colossal brown spider with a purple abdomen, peanut-sized eggs, and a leg span said to reach five feet. According to ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. A trapdoor spider, known only as “Number 16,” was first ...

An elusive species of trapdoor spider has been spotted again in a small village in Portugal after a 92-year disappearance. Exquisite spider fossils from Australia offer clues to their evolution ...

Scientists at the University of California, Davis, have discovered a new species of trapdoor spider lurking in California’s coastal sand dunes. The newly identified Aptostichus ramirezae is a close ...