Photograph courtesy Dave Steinmann
Published February 4, 2011
Unless you've been living in a cave, you probably haven't run across this new species of poisonous, nearly blind pseudoscorpion.
The 0.5-inch-long (1.3-centimeter-long) species, Cryptogreagris steinmanni, was discovered recently in high-altitude caverns near Glenwood Springs, Colorado.
Pseudoscorpions are essentially scorpions that lack a stinging tail. However, the new species does have long, venom-tipped pincers that likely help it nab agile prey, such as springtails, in the gloom.
Most likely, the new pseudoscorpion lives only in Glenwood Caverns and Historic Fairy Caves, the study authors say.
"A lot of these caves are islands, almost like an isolated environment where invertebrates ... evolve into being adapted to underground life," said biospeleologist David Steinmann, a zoology department associate with the Denver Museum of Nature and Science. Steinmann collected the new species after it was discovered in 2000 by tour guide Micah Ball.
With its primitive eyes and pale color, the arachnid is perfectly suited to its dark, chilly existence and has probably been scurrying through the passages for millions of years, Steinmann said.
New Pseudoscorpion Elusive—Until Now
Little is known about C. steinmanni, but it's thought to be rare, relatively long-lived, and able to curl up into a defensive ball when threatened.
The animal went unnoticed for so long because it blends in well with the rocks—and because few people have been crawling around caves looking for tiny creatures.
"It's always fun to see what's out there."
The new-pseudoscorpion study appeared in December 2010 in the journal Subterranean Biology.
Technology yields new insight into how a Chinese emperor created an army for eternity within his tomb.
Latest From Nat Geo
We can prevent birds from flying into windows with current technologies—experts say we just need the will.
The protected area is home to great hammerhead sharks, manta rays, whale sharks, and tiger sharks.
To their living sons and daughters, the soldiers in blue and gray are flesh and blood, not distant figures in history books.
The Future of Food Series
We've made our magazine's best stories about the future of food available in a free iPad app.
How do we feed nine billion people by 2050, and how do we do so sustainably?