This colony has taken a bizarre twist.
After about 4 weeks they ate what they could of the Queen's body and finally dropped the pieces of the queen in the refuse pile.
After this point, their behavior changed noticeably.
Despite a lot of food (nectar and insects) available in their outworld, they ate about half of the larvae. Leaving about 80 or so.
The rest of the larvae spun cocoons, but as the weeks have gone on they are slowly cannibalizing the brood. I am down to about 20 pupae.
Oddly enough, 3-5 workers will gang up on a single worker, killing her and then cannibalizing her as well. From over 200 workers I am down to about 100. And it isn't the same 3-5 workers every time.
I was planning on introducing a new queen when they fly late May, but at this rate, I may not have any workers left...
I have had several species lose a queen on me, but they did not turn self destructive like this colony has. In one small Camponotus herculeanus colony (10 workers) I had a queen die and thought it was odd that there were only 2 surviving workers 4 months later. Now I am wondering if Camponotus herculeanus always behave like this once they loose their queen.