In 2010 scientists found unusual spiders in caves in southwestern Oregon. This month they described those spiders as a new genus and a new species: Trogloraptor marchingtoni. The species was described in the journal ZooKeys (and in this case “open access” doesn’t mean free access to the journal. You must pony up 33 Euros to read the article.
The abstract says that spiders in this genus are “known only from caves and old growth forest understory in the Klamath-Siskiyou region of Oregon and California.”
Read ScienceNOW from AAAS for a great photo and a brief summary of the discovery.