Hi!
I think the ants belong to the genus Camponotus rather than Formica.
Clues could be the overall proportions (elongated with short legs), the size of the eyes, the shape of the head, location of the scapus base. In some species, it isn't easy to tell apart though...
Great captures!
Could be. With the flying ones is especially hard to say because their proportions are more extravagant than those of workers that I encounter more often. I came to that species mostly because the workers that I usually encounter in that area are the Formica fusca, the most numerous species here where I live. 🙂Thanks for the suggestion.