Argentine Ant

Workers are light brown or brown.

Nests are in refuse piles, bird nests, wall voids, masonry voids, and cracks in concrete slabs around the perimeter of buildings. Nests also may be made deep in the ground during dry or cold weather.

Colony. The colonies of these ants usually are large and contain hundreds of queens. New colonies are formed when a queen and a small number of workers migrate to a new site. In winter, several colonies may combine to form a large colony.

Habits. Argentine ants produce a chemical trail, which allows them to forage  day and night. Food includes sweets, meats, fruit, eggs, dairy products, animal fats, and vegetable oils. Excessively dry or wet conditions often cause workers to invade houses.

Colonies can become dominant in an area an effectively force out other ant species, such as odorous house ants.

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