Whip Scorpions

Scorpion, originally uploaded by magnusvk.

The march of chelicerata knowledge continues. Whip scorpions are apparently not "true scorpion," but are rather related closely to spiders. As you can see, they don't have that spiked tail, but actually spray vinegar-like acid out of their own tail.

More info here, from the pages of the The British Tarantula Society Journal. This page is actually from a fun site called Arachnophilia. As site head Martin Overton puts it, "if it has eight legs (Tarantula or Other Spider, Scorpion or Other Arachnid) or no legs (Snakes or Snails), then you will find something about it here."