Atta laevigata

Lore & Background

Atta laevigata has been harvested for about nine weeks each year during the rainy season, when the ants make their nuptial flight. Only queen ants are collected, as other colony members are not considered edible. The legs and wings are removed, and the ants are soaked in salty water before being roasted in ceramic pans. The main production centers are the municipalities of San Gil and Barichara, from which trade extends to Bucaramanga and Bogotá. The ants are exported primarily to Japan and some European countries.

Local superstitions and beliefs regard the ants as aphrodisiacs. They are also used as traditional gifts in weddings. Analyses conducted at the Industrial University of Santander show high levels of protein, very low levels of saturated fat, and overall decent nutritional value.

Harvesting of the ant queens, along with competition for resources with more aggressive leafcutter ant species, has caused a progressive decrease in populations. According to recent studies, the population has declined significantly over the past twelve years, raising concern for the species' future.

Reader's Guide

Atta laevigata holds significance both as a biological species and as a cultural and economic resource. As one of the largest leafcutter ants, it is notable for the smooth, shining head of its largest workers. Its colony size of about 3.5 million individuals underscores its ecological role in neotropical ecosystems. Culturally, the ant has been consumed for centuries, with traditions dating to pre-colonial groups such as the Guanes. The harvesting of queen ants during the rainy season provides a temporary income for poorer people in the department, and the ants are exported to Canada, England, and Japan. However, overharvesting and competition with more aggressive leafcutter ants have led to a drastic population decline—only a sixth of the population from twelve years ago remains. This decline raises concerns about the species' long-term survival. Nutritional analyses indicate the ants are high in protein and low in saturated fat, contributing to their appeal as a food source. The species is also known by numerous local names across its range, reflecting its widespread cultural importance.

Did You Know?

• Atta laevigata is known in northern South America as hormiga culona, which translates to 'big-assed ant'.
• Only queen ants are collected for food; other colony members are not considered edible.
• The ants are harvested for about nine weeks during the rainy season each year, at the time of their nuptial flight.
• According to recent studies, only a sixth of the ant population of twelve years ago exists today.

Taxonomy & Physical Identity

Atta laevigata, first described by Smith in 1858, belongs to the genus Atta, which encompasses roughly a dozen leafcutter ant species distributed across northern and central South America. Its range stretches from Venezuela in the north down to Paraguay in the south. Among its relatives, A. laevigata ranks as one of the largest leafcutter species. The most distinctive morphological feature that separates it from other Atta species is the head of the colony's largest workers: it presents a notably smooth and glossy surface, a trait that has even inspired one of its common Brazilian names. Colonies of this species are enormous, with estimates placing the total population at approximately 3.5 million individuals, making each nest a vast, organized superorganism. The smooth-headed major workers are the most visually striking members of this collective, and their appearance is central to how the species is identified in the field.

A Name in Every Tongue

Few insects carry as many local names as Atta laevigata, a testament to its deep entanglement with human communities across the continent. In northern South America, it is most widely known as hormiga culona, a colloquial phrase that literally translates to "big-assed ant." In Peru, people call it sikisapa; in Central America, zompopo de mayo; in Venezuela, bachaco culón; in Paraguay, akango; and in Mexico, chicatana. Brazilian Portuguese speakers refer to it as saúva-cabeça-de-vidro, meaning "glass-headed saúva," where saúva is the umbrella common name for all members of the genus Atta. The "glass-headed" descriptor directly references the smooth, shiny cranial surface of the major workers. This linguistic richness underscores how the species has been woven into the everyday vocabulary of dozens of indigenous and mestizo communities, each region developing its own vivid, often humorous, moniker for the ant.

A Culinary Heritage Spanning Millennia

The practice of eating Atta laevigata queens is not a modern novelty but a culinary tradition stretching back hundreds, if not thousands, of years, inherited from pre-colonial peoples such as the Guanes. Each year, during the rainy season, local harvesters work for approximately nine weeks, coinciding with the ants' nuptial flight, to collect the queens. Only the queens are deemed edible; the rest of the colony is left untouched. The preparation involves carefully removing the legs and wings, soaking the bodies in salty water, and then roasting them in traditional ceramic pans. Harvesters frequently suffer painful bites from the ants' powerful mandibles during collection. San Gil and Barichara serve as the principal production hubs, from which packaged ants are distributed to Bucaramanga and Bogotá, and exported as far as Canada, England, and Japan. Beyond mere sustenance, the ants hold ceremonial significance: they are given as traditional wedding gifts, and local folklore attributes aphrodisiac qualities to them.

Nutrition, Livelihood, and a Diminishing Future

Nutritional analyses carried out at the Industrial University of Santander have confirmed that these ants are a remarkably efficient food source, boasting high protein content and very low levels of saturated fat, lending them a solid overall nutritional profile. For many of the poorer residents of the department, harvesting ant queens represents a critical, if temporary, source of income during the rainy season. However, this very economic reliance, combined with resource competition from more aggressive leafcutter species locally called "arrieras," is driving a troubling ecological decline. Recent studies estimate that the current population stands at only one-sixth of what it was just twelve years ago. This steep drop has raised serious concerns among researchers and local communities about the long-term viability of the species. The intersection of cultural tradition, economic necessity, and biodiversity loss makes the future of Atta laevigata a pressing question for the regions that depend on it.