A friend dropped by today, recently back from a hog hunting trip in the panhandle. No hogs. His group was staying in an old house on the ranch. Just after he went to bed he felt something crawling on his foot. He turned on his flashlight and saw a huge bug on his foot. He jumped up, screaming like a little girly man. Everyone got up with lights and then they found a bunch of them. Whip Scorpions or Vinegaroons [Mastigoproctus giganteus] are not poisonous but they are ugly and big. He told me everyone slept in their trucks the rest of the trip. He scooped one into a coffee can and brought it back with him. He knew I would want pictures. He tried to catch a big one but couldn't. The one he brought back is a medium size one-he says.
You can see the whip tail here. They sling a vinegar like substance out of it, hence the name.
You can see that it has two pincers on each forward arm and both work. They use them to catch bugs as they are strictly meat eaters. With the penny in the picture you can tell it is a very large bug. Although it looks like a scorpion and is called a scorion, it really isn't a true scorpion. It's an interesting bug none the less.