My neighbor found a small piece of wood that had a very small Camponotus pennsylvanicus colony in it - only a handful of workers. So, I brought it home, left it outside, and was preparing a plastic bin to use to extract them into tubes.
I went to check on the wood about 6 hours later... they were all dead. The wood was being swarmed by Tetramorium workers who were taking the brood and had already killed the queen - they'd left the queen's body on top of the wood.
I found a single carpenter worker returning and panicking. I felt bad for her. I was able to rescue 3-4 larvæ though I don't know how healthy they are.
The only Camponotus I have right now are 3 C. pennsylvanicus, 1 C. subbarbatus, and 1 C. chromaiodes. Should I boost the pennsylvanicus queens with them? Will the chromaiodes accept pennsylvanicus larvæ, given that they are closely related?