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Arachnida (Arachnids) is a class of chelicerates. There are 75601 species of Arachnids, in 8122 genera and 822 families. It includes groups like Harvestmen, Pseudoscorpions, and Spiders.

EOL has data for 4 attributes, including:

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Arachnid Habitats

The environments in which many arachnids species are known to live. Select an environment to see its arachnids species checklist.