Formica rufa (or similar species from that complex) and Formica fusca (hanging)
I found this almost bizarre scene early in the morning. Both showed signs of battle and I never quite figured out if the hanging slave ant (F. fusca) was still alive.
Stacked from 19 natural light exposures in Zerene Stacker.
Optics: Carl Zeiss Luminar 63/4.5 on Nikon PB-6 bellows.