A Corpse Spider is a monster found in the Lumbridge Catacombs. These monsters will attack every 5 seconds, dealing 10 damage per level. They are a Ranged type monster, and as such, they are weak to Melee and strong against Magic. They have 32 lifepoints per level.
A Corpse Spider can be stolen from using the Thieving skill. The Ring of Kinship can be stolen from them, which gives +10% speed to the Dungeoneering skill.