Lasius latipes I'm quite sure from the bulk of the legs on the queens. This ant in particular is part of a group in Lasius that is almost completely subterranean. They feed on underground dew producing insects and only ever come to the surface in late summer and throughout the fall. This is when they have nuptial flights usually in the late afternoon. They are slow to get things moving, sometimes they don't even fly until the second day of coming out like his. Once they get going though queens will begin pouring out of the nest. Males fly out too but I don't see them as often.