Jean and Fred   cc-by-nc-2.0

Arachnida (Arachnids) is a class of spiders. There are 73556 species of Arachnids, in 7711 genera and 860 families. This class has been around since the telychian age. It includes groups like Harvestmen, Pseudoscorpions, and Scorpions.

EOL has data for 11 attributes, including:

Jean and Fred   cc-by-nc-2.0

Arachnid Habitats

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