|A fast-moving arachnid that both surprises its prey and evades its enemies by concealing itself in crannies in the dungeon floor.|
For a list of all arthropods, see list of arthropods.
Trapdoor spiders are territorial monsters that are normally content to hide underground. However, if you step adjacent to their tile, they will leap out and attack. They are somewhat fragile, but fast and poisonous, and the fact that you can only find them by walking into melee range makes escape very challenging. They can occasionally be found in the Dungeon and in Labyrinths, but are much more commonly found throughout the Spider's Nest.