D. ROBERTS / SCIENCE PHOTO LIBRARY D. ROBERTS / SCIENCE PHOTO LIBRARY
Palamnaeus scorpion. X-ray of the adult scorpion Palamnaeus fulvipes. A hard exoskeleton covers the body; inside it can be seen muscles in the tail, walking legs, and pincers (at top). Scorpions are carnivorous arachnids, their prey consisting of beetles, cockroaches and other arthropods. Prey is grasped with the pincers, then passed to the chelicerae (small, paired first appendages) which carry food to the mouth. The poison spine in the "tail" is used only when the prey is large or struggles violently. Four pairs of walking legs are seen. The flattened body of scorpions enable them to live in cracks in rocks and under stones. They are active typically at night.
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