Little pseudoscorpion (Apochthonius sp.)
Here's a tiny pseudoscorpion I found while sifting forest litter. It's a little over a millimetre long. I don't have the equipment to get clear shots of stuff this tiny, but from the images I did take I suspect it is in the genus Apochthonius.
More shots on BugGuide:
http://bugguide.net/node/view/803460