Ant tug of war
I do like the shiny ants but it looks like this time around the smaller ants had the upper hand...or..uhm.. mandible.
I think the middle one is some Rhytidoponera sp., maybe R. metallica.
Not sure about the others, maybe some Lasius sp. ?
Oh, and press L please
p.s. Been reading a great Book called "Empire of the Ants" by Bernard Werber, which I can only warmly recommend. It was pointed out to me by a fellow flickerian. Now I'll have to find 6 matches and some ants for a fitting photo... if you've read the book you know what I'm talking about. Ah, also a great little time waster for an hour or so is this video on youtube on ants, go watch it if you're interested in this sort of thing : www.youtube.com/watch?v=Z-gIx7LXcQM