For a list of all arthropods, see list of arthropods.
|A fast-moving arachnid that both surprises its prey and evades its enemies by concealing itself in crannies in the dungeon floor.|
Trapdoor spiders are territorial monsters that are normally content to hide underground. However, if you stand adjacent to their tile, they will leap out and attack. They are moderately powerful, fast, and poisonous, and the fact that you can only find them by walking into melee range makes escape very challenging. They may flee back underground when injured, making it difficult to land a finishing blow. They can occasionally be found in the Dungeon and more commonly in the Spider's Nest.