Page 40 - One Million Things: Animal Life - The Incredible Visual Guide

Found in hotter regions, scorpions hunt at night, using special vibration sensors to detect prey. They hold prey in their clawlike pedipalps while picking off small morsels of food using their With broad, flat bodies, these tropical arachnids move sideways, feel for insect prey with their long, thin first MITES AND TICKS The smallest of the arachnids, some being barely visible, mites and ticks have rounded, one-piece bodies. Mites are found by the millions in soil and water, and also include parasites of both plants and animals

SCORPIONS sharp chelicerae. WHIP SPIDERS legs, then grab it with their pincerlike pedipalps. Whip spiders are nocturnal, and spend the day hiding under stones, in leaf litter, or 3

6 7 in caves. 8 Orb web spider

More than half of arachnid species are spiders. All produce silk threads, which some, such as orb web spiders, use to spin insect-trapping webs. Others, including tarantulas and jumping Cave spider PSEUDOSCORPIONS Resembling smaller versions of scorpions, pseudoscorpions lack both a tail and sting. They have venom glands in their pedipalps, which they use to immobilize insects and other small prey. Pseudoscorpions hunt for prey in soil, leaf litter, and under logs and rocks. Also called wind scorpions, these fast-running arach

SPIDERS spiders, stalk their prey. SUN SPIDERS

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Abdomen, the rear part of the body Funnel web spider

land-dwelling predators. Most use venom to disable their
the resulting liquid. The arachnid body has two parts—a
prey, then douse it with digestive enzymes and suck up
cephalothorax at the front and an abdomen at the rear.
pedipalps that are either leglike or clawlike, and four
mouthparts called chelicerae, two appendages called
Attached to the cephalothorax are a pair of fanglike
Spiders, scorpions, and other arachnids are mainly
Crab spider Chelicerae used to inject venom into prey
pairs of walking legs. In spiders, the abdomen
Harvestman
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ARACHNIDS

contains silk-producing glands. Mexican red-rumped tarantula HARVESTMEN Commonly mistaken for spiders, harvestmen have an oval body with no “waist” between front and rear parts. Harvestmen use their second and longest pair of legs as feelers to find their way and detect prey. They feed on small insects, plants, dead animals, and dung. Some, if threatened, can detach their legs, which continue moving to confuse predators. Huntsman spider Cephalothorax, the front part of the body

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