Two spiders making a web on plant


Spiders make up the majority of the arachnida class (or arachnids), with over 50,000 known species. Mites come a close second at 48,200 species. The other arachnids are scorpions, whip scorpions, microwhip scorpions, pseudoscorpions, harvestmen and sun spiders. Most species are carnivorous.

Scientific name: Arachnida

Rank: Class

Common names:


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  1. Life
  2. Animals
  3. Arthropods
  4. Arachnids

BBC News about Arachnids