This photo, entitled "A marvel of ants", made Hungarian photographer Bence Máté the winner of the coveted title Veolia Environnement Wildlife Photographer of the Year.
When he tried to photograph the leaf-cutter ants in the Costa Ricanrainforest in action, he tried to find out about their complex society and spent hours watching and following them.
"They proved to be wonderful subjects," he said. "The variation in the size of the pieces they cut was fascinating."
But showing them in action was not easy. "The were only active at night, which made my job very difficult," he said.
Of his winning photo, he said: "I love the contrast between the simplicity of the shot itself and the complexity of the behaviour."