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Arachnids include spiders, scorpions, mites and ticks. There are about 60,000 species of arachnids. Arachnids have eight legs, not six like insects. They also have an extra pair of either pincers or fangs. They do not have wings or antennae but they do have a hard exoskeleton.Arachnids have two parts to their body-the cephalothorax and the abdomen. The cephalothorax is like the head and thorax section of an insect but it is fused together.rachnids include spiders, scorpions, mites and ticks. There are about 60,000 species of arachnids. Arachnids have eight legs, not six like insects. They also have an extra pair of either pincers or fangs. They do not have wings or antennae but they do have a hard exoskeleton.
Scorpions have elongated bodies and segmented tails that are tipped with a sharp, venomous stinger. These stingers are the prickly organs designed for both offensive and defensive purposes; they have a poison gland ready to inflict a venomous wound from a single sting.ost scorpion stings will only cause pain and swelling similar to a wasp sting unless a person is allergic to the scorpionâs venom. Still, the fact remains that some scorpions are feared because their stingers are very deadly. Some of the most venomous scorpions are known to exist in Africa, India, Mexico and Arizona.