Dungeon spider

The Dungeon spider is a monster found in Daemonheim that looks exactly like a regular Giant Spider on the surface. It was released along with the Dungeoneering skill. These monsters hit low for their level, but are very accurate to compensate, and can consistently hit even through high level magic armour. Members should be further warned that it poisons occasionally so a cure potion or antipoison would help a lot. It is recommended that players using the latter should use it after the spider is dead as the antipoison bought from the Smuggler in Daemonheim does not give temporary immunity. It is weak against magic attacks, particularly air spells. Protection prayers do not prevent it from inflicting poison (as with other poisonous monsters). These spiders are found first in the Abandoned floors. Note that although it exists on Free-to-play worlds, it does not inflict poison to Free players. This spider is particularly taxing on floors which are on complexity one, as it is extremely hard to cure poisons on those floors aside from eating food to offset the damage. Also, players cannot rest whilst poisoned, which can pose an additional challenge to those doing complexity one floors, although these floors are generally very short and don't require much running.

Drops
Dungeon spider