Leafcutter ant

A fungus-growing ant that cuts fresh vegetation and carries it to an underground garden, where it cultivates a food fungus. Its colonies depend on this cultivated fungus rather than eating the leaves directly.

Atta: A genus of New World ants that includes several prominent leafcutters and builds large fungus-growing colonies. Atta species illustrate the leaf-cutting and fungus-gardening cycle at enormous colony scale.
Eusociality: A social system with cooperative brood care, overlapping generations, and reproductive division of labor. Leafcutter colonies divide reproduction and work among queens and specialized workers.
Herbivory: The consumption of living plant tissue by animals. Leaf cutting is a distinctive form of plant use, even though the ants feed on fungus.
Agriculture in ants: The cultivation of fungi or other food resources by ants for sustained use. Leafcutter farming is a highly specialized example of agriculture evolving in ants.
Seed dispersal: The movement of seeds away from the plants that produced them. Leafcutters can move seeds along with plant material, linking their trails to plant recruitment.
Acromyrmex: A New World ant genus whose species cultivate fungi and include many leafcutters. Its species show that leaf-cutting gardens occur beyond the largest Atta colonies.
Caste system: A social organization in which individuals perform distinct roles, often shaped by development or body form. Worker size classes specialize in tasks such as cutting, carrying, and tending the garden.
Tropical ecology: The study of ecological processes in tropical environments. Leafcutter colonies influence vegetation, soil, and nutrient flows in tropical ecosystems.
Evolution of agriculture: The evolutionary emergence of organisms that cultivate food resources rather than relying only on gathering them. Ant farming arose independently of human agriculture and followed its own evolutionary path.
Nutrient cycling: The movement and transformation of chemical nutrients through ecosystems. Garden waste and colony activity redistribute nutrients through tropical soils.

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