Analysis of spider and snake venom recommended.  Traits of these substances are to be used to further enhance the paralytic agent of warriors.  

Analysis of beetle carapace structure recommended. Warriors are to have their armor reinforced based on the beetle carapace characteristics.  Strengthen frontal legs of warriors and add armor plating equipped with sharp serrations to increase combat effectiveness.

Use small squads of drones to bait beetles away from main nest.  Draw beetles into prepared ambushes of hidden warrior ants. 

Once the numbers of the beetles have been deemed sufficiently culled, preparations for full assault may begin.

Create tunnel from secondary hive extending near to the border of beetle territory. Tunnel is to be braced with spider silk and twigs. Establish small; completely underground, hive to serve as a hidden staging ground for future assault.