Entomologist Ally

Talk to Amid next to the entrance to The Hole in Paineel.

In Spirit's Resonance (off the Sundered Frontier), go to The Saturnine of Hollows, which looks like a creepy room with bugs. (669.40,126.52,-282.61)

Use the stinkbug trap given by Amid on a Humongous graveyard stinkbug, the quest will update as the bug comes towards you and disappears.

Return to Amid.

Reward: 94g 74s 67c and 4.4% experience at level 88.