Aztec carton ant

Azteca chartifex is a species of ant belonging to the family Formicidae and the subfamily Dolichoderinae. These ants are well-known for their unique architecture, as they construct large carton nests made from wood pulp and waste materials, often attached to the branches of trees in tropical environments.

These ants are considered significant pests in agricultural sectors, particularly impacting cacao, citrus, and coffee plantations. By colonizing large trees, they interfere with vegetative growth and make manual labor, such as harvesting or pruning, extremely difficult due to the ants' aggressive defense of their territory.

The biological impact of Azteca chartifex is primarily linked to their mutualistic relationship with sap-sucking insects like mealybugs and scale insects. The ants provide protection to these pests, shielding them from natural predators, which leads to exponential population growth of the suckers and causes severe plant stress.

The presence of these ants significantly damages plant health. The excessive honeydew produced by the protected sucking insects promotes the growth of sooty mold, which coats the leaves and limits photosynthesis. Furthermore, the construction of their nests on branches can lead to localized tissue necrosis and susceptibility to secondary wood-boring pests.

Effective management strategies focus on disrupting the ant-coccoid mutualism. Integrated pest management involves using sticky bands on tree trunks to prevent ant movement, targeted application of environmentally safe insecticides against the scale insects, and physical destruction of carton nests during the dry season to reduce colony density.