Arachnida (spiders, scorpions, ticks, mites, etc.)

Life > Eukaryotes > Opisthokonta > Metazoa (animals) > Bilateria > Ecdysozoa > Panarthropoda > Tritocerebra > Arthropoda > Arachnomorpha > Cheliceriformes > Chelicerata > Euchelicerata

Araneae (spiders)
Scorpiones (scorpions)
Pseudoscorpiones
Amblypygi (whip scorpions)
Uropygi (whip scorpions)
Opiliones (harvestmen)
Acari (mites and ticks)
Solifugae (sun spiders / red romans / baardskeerders)
Palpigradi (palpigrades)
Ricinulei (ricinuleids)
Schizomida (schizomids)