The giant desert hairy scorpion (Hadrurus arizonensis) is the largest scorpion inhabiting the South-West of North America and one of the 8???9 species of Hadrurus in the US, attaining a length of 14???15 cm (5.6???6 inches). Its large size allows it to feed readily on other scorpions and a variety of other prey , including lizards and snakes. This species is usually yellow with a dark top and lobster-like pincers. It gets its common name from the brown hairs that cover its body, these hairs help it to detect vibration in the soil. A similar species is Hadrurus spadix.