Giant spider

From Ardrana

Giant spiders are simply much bigger versions of the web-spinning large spiders. They build strong, sticky webs, and often lurk nearby waiting for victims to get stuck while examining the beautiful constructions of their own spinning. As many spiders as possible will attack the defenseless victim during its struggle to free itself. The giant spider is poisonous, and can be immediately deadly to the unfortunate victim.

Note: Giant spiders originally appeared in this form in the 2nd Edition Monstrous Manual for the AD&D game from TSR. Their use here is for the purposes of providing context for the campaign only.