Hello. My dog found this animal on my sunporch (Denver foothills). It was quite agressive, rearing up in a trantula-like fashion. At first I thought it was a spider; then perhaps an ant of some kind? It's mandibles move up and down, rather than side to side. I have tiny black ants from time to time in my house, nothing serious. I photographed and released it outside.
Here's another pic with better resolution.
This is a Windscorpion in the order Solifugae.
http://www.solpugid.com/eremobatidae.htm
This website gives more information on them. They feed on other insects mostly, are not venomous, and are considered beneficial.
http://www.ag.ndsu.nodak.edu/aginfo/entomology/entupdates/Indoor_pest/windscorpion.htm
That is so cool....thanks!
