The swollen stem of a Cordia nodosa plant houses a symbiotic colony of Azteca ants. The ants protect the plant from herbivores in exchange for lodging. The large ant at center is the queen.

Jatun Sacha reserve, Napo, Ecuador
The swollen stem of a Cordia nodosa plant houses a symbiotic colony of Azteca ants. The ants protect the plant from herbivores in exchange for lodging. The large ant at center is the queen.

Jatun Sacha reserve, Napo, Ecuador
The swollen stem of a Cordia nodosa plant houses a symbiotic colony of Azteca ants. The ants protect the plant from herbivores in exchange for lodging. The large ant at center is the queen.

Jatun Sacha reserve, Napo, Ecuador
Dolichoderus attelaboides tends to hemipterans for honeydew.

Jatun Sacha reserve, Napo, Ecuador
Partners in a devil's garden: Myrmelachista ants and the Clidemia plants they live in. The swellings on the plant stem are hollow domatia that house the ant colony.

Jatun Sacha reserve, Napo, Ecuador
Myrmelachista workers with brood and mealybugs inside a domatium of a Tococa plant.

Jatun Sacha reserve, Napo, Ecuador
Myrmelachista workers with brood and mealybugs inside a domatium of a Tococa plant.

Jatun Sacha reserve, Napo, Ecuador
Cutting open the hollow base of a Tococa leaf reveals a colony of tiny Myrmelachista ants.

Jatun Sacha reserve, Napo, Ecuador
Partners in a devil's garden: Myrmelachista ants and the Clidemia plants they live in. The swellings on the plant stem are hollow domatia that house the ant colony.

Jatun Sacha reserve, Napo, Ecuador
The swollen stem of a Cordia nodosa plant houses a symbiotic colony of Azteca ants. The ants protect the plant from herbivores in exchange for lodging. The large ant at center is the queen.

Jatun Sacha reserve, Napo, Ecuador
The swollen stem of a Cordia nodosa plant houses a symbiotic colony of Azteca ants. The ants protect the plant from herbivores in exchange for lodging. The large ant at center is the queen.

Jatun Sacha reserve, Napo, Ecuador
The swollen stem of a Cordia nodosa plant houses a symbiotic colony of Azteca ants. The ants protect the plant from herbivores in exchange for lodging. The large ant at center is the queen.

Jatun Sacha reserve, Napo, Ecuador
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all images and text © Alex Wild 2001-2013