Most people are familiar with the overall scorpion shape: a flattened, elongated oval body; the pair of front appendages with pincers; four pairs of walking legs; and a long, curling tail that ends in a bulbous segment tipped with stinger.
Young scorpions are pale yellowish-brown, usually with two lengthwise dark stripes on the abdomen; older scorpions are uniform dark brown with the stripes faint or lacking.
A scorpion has a pair of eyes in the middle of its back, as well as two to five additional pairs of eyes along the front edge of its body. Even though they have a lot of eyes, scorpions have poor vision. They make up for this by having tiny sensitive hairs on their pinchers that help them detect motion. In addition, scorpions have strange comblike structures called pectines on their undersides, which are unique to scorpions. The pectines are sensitive to touch, to ground vibrations, and perhaps even to sound.