On a related note, trap mobs are way too hard and should not be destroying groups the way they currently are. Swarm beetles are currently hitting for 136 max and have standard DN mob HP.
From the actual Zam mob entry
http://everquest.allakhazam.com/db/npc.html?id=5437:
"These little things appear as the result of traps. Usually you get 6 to 10 of them at once.
With about 2000 hp each, they hit for 30 to 60."
A user's comment:
"These things are level 50. yet only hit for 50-80
and have 2,000 HP dear god."
There is also comment saying that they hit for 137, but it's from 2008.
Additional source
http://www.eqcleric.com/threads/6521-Dragon-Necropolis (2004):
"They only have about 2k hp, but the buggers hit fast. "