Spiders are eight-legged creatures that attack parties of adventurers in large groups. The most common type is non-poisonous, but there are enough related poisonous species that any warrior bitten by a spider should take precautions as if he had been poisoned. Spiders are found in the forests near Coneria and the Temple of Fiends.
Larger variants of the Spider include the poisonous Arachnid.
Final Fantasy Origins: Black Widow