Arlaidna

  Blimey! I just saw an Arladnia feasting on a corpse. Glad it wasn't me. Poor fellow must have endured a long and torturous death. 

-Mikkel Edenswill, guardsman of Blackhelm

Arlaidna's are large spider like creatures that prowl in deep cave systems where they live in swarms, ranging from a dozen to a hundred. Arlaidna's are nearly as tall as a man and have highly venomous poison, which puts the victim in a state of paralysis. They prefer to eat living meals, and the eating of a victim can take hours, during which the victim is constantly put through agonizing pain, though their body is rendered completely useless. They are forced to watch as their life is slowly being drained away.

Arlaidnas were used as a method of execution for high treason by Mérindar, though this custom was ditched halfway through the Fourth Age.