In this picture you can clearly see the tube like tail (flagellum), which gives the uropygid one of its common names: whip scorpion, even though its clearly not a scorpion. The animal has 8 legs, but uses 6 for walking. The first pair serve as antennae-like sensory organs.
The uropygid has glands near the rear of their rear of their abdomen that can spray a fine mist that smells like vinegar, hence one of its other common names: vinegaroon. In Mexico its called vinagrillo, which is a word made up by gluing vinagre (vinegar) and grillo (cricket) together.
At the bottom of the picture you can see the leg of a cricket, remainders of a meal.
