New plan devised.

Emaciate a small number of drones. Ensure beetles only encounter emaciated drones from now on.

Bait beetles into committing for full assault. 

Once beetles are too far in to withdraw, collapse on them with EVERYTHING, and allow none to escape. (This includes launching assaults on the stolen forts)

Large beetles are to be prioritized for capture, normal beetles may be captured if situations allow.  Capturing beetles with the sticky goo produced by workers should prove effective.

All is to be overseen by princes.