Workers exceed 10 mm and are among the larger Neotropical ants.
Fine-art photographic collection
Pachycondyla impressa
A giant ponerine ant whose supposed Brazilian range disappeared when taxonomists re-examined the evidence.
About this species
Pachycondyla impressa(Roger, 1861)
Information reviewed15 July 2026
Pachycondyla impressa is a large Neotropical predatory ant. A recent revision showed that decades of Brazilian records belonged to other species and restricted the true identity of P. impressa.
Taxonomy
Animalia · Arthropoda · Insecta · Hymenoptera · Formicidae · Pachycondyla
Accepted taxon. · checked 2026-07-15
Central America and north-western South America; recent revision excludes BrazilBroad range and selected reference localities — not a complete occurrence map.
Central America and north-western South America; recent revision excludes Brazil
Tropical forest floor, soil and rotting wood.
Ground-foraging workers.
Arthropod prey and other protein-rich food.
Colonial ant with a queen and workers.
What makes this species remarkable?
A modern revision concluded that Pachycondyla impressa does not occur in Brazil at all: every Brazilian record examined belonged to P. fuscoatra or the newly described P. beneditoi.
To stabilise the name, researchers designated a lectotype — one historical worker now acts as the permanent reference that decides what “impressa” means after more than 160 years of confusion.
The worker is over a centimetre long with heavily impressed body sculpture and a functional sting, combining the mass of a large ant with the close-range weaponry of a ponerine predator.
Sources and scientific references
- GBIF — taxon record/search for Pachycondyla impressa
- Catalogue of Life — taxon search for Pachycondyla impressa
- Marcineiro & Lattke — revision of Pachycondyla and exclusion of P. impressa from Brazil
- Review abstract and lectotype information
- Thesis treatment illustrating diagnostic sculpture in Pachycondyla impressa