Medical Definition of ARTHRODESIS. : the surgical immobilization of a joint so that the bones grow solidly together: artificial ankylosis. the surgical immobilization of a joint so that the bones grow solidly together. ADVERTISEMENT.
Trapdoor spiders are not particularly harmful to man however, like Tarantulas, the tiny hairs on the legs of some species leave tiny red marks where the toothed hairs on the spiders' feet have clung to the skin. Mouse spiders are also a type of Trapdoor spider with huge chelicerae and may measure up to 35mm in body length.
Wolf Spiders are NOT poisonous, every spider has venom but only a few of them can affect humans. People mistake them for brown recluses and hobo spiders. Hobo spiders don't live on the ground, and if there is one on the ground it's most likely a male.They live in hammock shaped funnel webs in corners. just realized that this video has over 9000 views.... thanks guys! :D. Wolf Spider: http://i26.photobucket.com/albums/c12... These are the only ones out of these four spiders that carry around egg sacs and that let their young crawl around on their back after they hatch.