These things should grab you and drain you of your body fluids until you have broken bones status effect where it will drop you and you get the "sucked dry" status effect which will lead to your instant death. Get this higher on the list if you agree.
Ragnarock - Go into ice cave and kill the weak deathworms there. Use a good shield to block their attacks and melee them with a sword, easy quick kills because they have so little health and they drop the same loot as a regular deathworm. Make sure to wear warm cloths.