Leafcutter ants are conspicuous insects in warmer regions of the Americas. These spiny, charismatic ants are expert farmers, cultivating their food- a specialized fungus- in extensive underground galleries. The cut leaves are not consumed directly by the ants but are used to grow the fungus.
A mature leafcutter colony contains more than a million individual ants and can defoliate an entire tree overnight. Here a busy trail of Atta cephalotes carries cut vegetation back to the nest. Note the small ants riding atop the leaves- these stand guard against parasitic Phorid flies attempting to attack the preoccupied leaf-carriers. Ecuador.
A mature leafcutter colony contains more than a million individual ants and can defoliate an entire tree overnight. Here a busy trail of Atta cephalotes carries cut vegetation back to the nest. Note the small ants riding atop the leaves- these stand guard against parasitic Phorid flies attempting to attack the preoccupied leaf-carriers. Ecuador.