Here is my small nervous Formica subsericea. These are black field ants, you can tell them from carpenter ants because they are shiner, only come in one size (no majors with big heads) and their thorax has a dent rather than a hump. They also move differently from carpenter ants which tend to be more deliberate and less spastic.
Today I gave them fruit flies and they have eagerly piled them up in front of the queen. Who looks like she just wants to go to sleep.
