Tapinoma sessile has re-entered the kitchen, a sure sign of spring. (My wife doesn't care for them, but I ignore her pleas to do something about it, because I find them hopeful. )
I've also seen a few Formica subsericea, Lasius claviger and of course, Prenolepis imparis. The most unexpected was finding a queen of the cryptic Myrmecina americana under a stone at the edge of the yard. These fly in fall, and most likely overwinter before laying their first eggs.