And then they ask, where are all the healers at..

[Taika]

Ah, Qarn. This dungeon is the first introduction that I know of, of "Final Sting". The little hornets in some pulls have a sort of final attack that has them doing upwards of 50% of the maximum health of the tank. They hurt, bad. There are a couple of factors to mitigate this.

1) DPS the hornets one at a time. Doing all AoE all the time with two hornets in the pull ensures tank death, as both hornets will hit their final sting at about the same time.
2) Tank should be using cooldowns during and after Final Sting. After a sting, they're going to be really low, so anything to keep them up longer is just common sense.

Most importantly, the tank should be stunning at least 1 of the Final Stings.