After clearing Inspect the traps, you can speak to Morell inside the hotel and offer a new theory on why the traps are missing locusts. This requires an Empathy check which, if passed, will trigger the quest.
Once the quest is triggered, speak to Cuno regarding the locusts, then go east to Cuno’s shack and head inside. A new green orb will appear. Click this, then a yellow Perception orb will appear over your head. Click that too, then cycle through dialogue options with Kim.
Exit the shack and talk to Cuno again. After that conversation, go back into the hotel and speak to Morell. This will clear the quest and, depending on how you speak to Morell, the Find the insulindian phasmid quest may trigger.