Argentine Ant


Actual Size: 2.2 to 2.8 mm

Characteristics: Light to very dark brown.

Legs: 6

Antennae: Yes

Wings: The reproductive males and females have wings.

Habitat: Builds nests near water sources. Outdoors, nests are located beneath boards, stones, or at the base of shrubs. Indoors, will build nests in wall voids and insulation.


  • Attracted to wet environments near food sources.
  • Will contaminate food and spread bacteria when foraging for food in pantries and kitchens.
  • Drip irrigation lines provide water and serve like highways for the movement of ants to form new colonies.

Argentine Ants are found in Louisiana

Argentine ants can be a major pest in gardens and homes. They leave pheromone tracks everywhere they go when they are searching for food. They never return to the same place twice because of this habit. Workers from different colonies are cooperative with each other and can form super-colonies. Argentine ant colonies can grow so big that they can even take over entire city blocks. The ants are among the most persistent pests infesting homes, spreading bacteria and contaminating their environment.

Habitats of the Argentine Ant

Argentine ants nest in soil that has been exposed to the sun. They may also remove vegetation from their nest area to heat it up. They also require water. The drip irrigation lines can be used as a superhighway for the ants, allowing them to establish new colonies. Argentine ants will nest anywhere near food. They can be found in concrete wall cracks or at the base trees. These ants can invade your home through cracks or crevices when the weather is too wet or dry. They are often found around water pipes, sinks and potted plants. Once inside they will forage and feed on sweets like fruit, meat, eggs, oils and fats.

Argentine Ant Threats or Behaviors

The sheer size of an Argentine ant nest can cause havoc in any home, even though they pose no serious health risks. Ants are attracted to bare dirt near irrigation ditches because they require water for survival. The majority of ants leave pheromones on their return to the nest after eating. Argentine ants, however, leave behind pheromone trail to and from a source of food. They can quickly form interconnected colonies due to their rapid colony growth. This can result in a massive infestation. It is important to call a professional if you suspect an Argentine ant invasion.

Professional ant exterminator.