Workers vary greatly in size, reflecting specialised roles within the colony.
Fine-art photographic collection
Acromyrmex echinatior
A fungus-farming ant protected by both microbes and a mineral-rich body coating.
About this species
Acromyrmex echinatiorForel, 1899
Information reviewed15 July 2026
Acromyrmex echinatior is a Central American leafcutter ant and an important model for the study of ant agriculture. Colonies cultivate fungus, manage disease and maintain complex partnerships with protective microorganisms.
Taxonomy
Animalia · Arthropoda · Insecta · Hymenoptera · Formicidae · Acromyrmex
Source checked · checked 2026-07-15
Central AmericaBroad documented localities — not a complete range map.
Known from Central America, particularly Panama and Costa Rica.
Tropical forest, forest edge and disturbed lowland habitats where plant material is plentiful.
Workers forage on vegetation and maintain trails between cutting sites and the nest.
Cut vegetation is processed into substrate for a specialised cultivated fungus.
Colonies contain a queen and strongly size-variable workers that divide cutting, transport, defence and fungus care.
What makes this species remarkable?
The species carries antibiotic-producing bacteria on its body that help suppress pathogens in the fungus garden.
A thin biomineral layer containing calcium carbonate has been documented on the worker cuticle.
Waste is isolated from the fungus gardens, reducing the spread of disease.