PHOTO: Hook-legged spider discovered in Oregon cave

The U.S scientists just found a new taxonomic family of spider located in caves from Oregon.

As of 1990 only 2 other spider families have been revealed and this is the first newly discovered, native one uncovered in North America since 1890, according to Charles Griswold of the California Academy of Sciences.

So far, the family consists only of the one species described, which the researchers named Trogloraptor marchingtoni.

The spider features hooks, or claws, on its legs, which are employed to catch flying insects, like midges, out of the air. The spider is about 8 centimeter long including the legs.

“They’re huge,” Griswold said. “When crawling through a dark cave and there’s only the spotlight of your head lamp, they look much bigger. It’s pretty amazing to see them hanging from a few threads.”

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The spider has poisonous glands, though there’s no proof that it is dangerous to humans.
Discovering a new family like this represents an historic event. “It is just as fascinating to arachnologists as the discovery of a new dinosaur is to paleontologists,” said spider researcher Norman Platnick at the American Museum of Natural History. Platnick did not have any involvement in the discovery or description of the new species.

Another unusual thing about the spider is that it has two rows of teeth, or serrula. “I don’t recall seeing any other spiders with that kind of serrula,” Platnick told OurAmazingPlanet.

The spider was first found by citizen scientists from the Western Cave Conservancy and taken to Griswold. Initially he thought it was a brown recluse, a poisonous type of spider. But a deeper inspection unveiled it was unique, and there was necessary 2 years to figure out that it is a new family. The results were published on Aug. 17, 2012 in the journal ZooKeys.
Source: Yahoo.com