Fire Ants

Nice photo! I don't think these are "true" fire ants though. I think these are actually weaver ants in the genus Oecophylla. Although these weaver ants are sometimes called fire ants, "real" fire ants belong to the genus Solenopsis. Compare these photos of weaver ants: http://en.m.wikipedia.org/wiki/Oecophyll...
to this photo of a Solenopsis fire ant: http://entnemdept.ufl.edu/creatures/urba...

Very beautiful and crispy close up!