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If your bug has four pairs of legs it is an arachnid


Arachnids are not insects. They are a different type of arthropod and include spiders, mites, ticks and scorpions.

In Britain most of us are more aware of spiders than other arachnids. But did you know that there are about 600 different species of spider in this country? All spiders have eight legs and have a body divided into two sections - the cephalothorax and the abdomen.


Britain also has about 1500 different species of mites and ticks, one species of scorpion (that has been introduced from Europe), and other arachnids like harvestmen and pseudoscorpions. If you want to find out more about arachnids, click on one of the links below.

Everything you need to know about spiders!
Learn more about mites and ticks
Pretend to be a harvestman!

Do want to identify another bug? Return to the key!