Argentine
Ant
Characteristics –
Size: Workers of this species are about 1/8-inch in length.
Color: Varies from dark brown to black, and the body is often shiny
in appearance.
The colonies of argentine ants can grow quite large and contain tens of
thousands of workers and numerous queens. Each colony will be divided into
subcolonies located in various suitable harborages connected by established
trunk trails. These subcolonies will number from a few hundred to thousands of
individuals.
Behavior –
The colony may have hundreds of queens, and each colony will be divided into a
number of subcolonies. Since members of two separate colonies are not aggressive
toward each other, colonies will often combine with one another. This creates
huge super-colonies that may extend over several properties. Argentine ants are
very aggressive and will drive out native species of ants creating an
environment where they are literally the "king" of the anthill, so to
speak. Their primary food source during the warm months is the sweet honeydew
produced by aphids and mealybugs. The presence of fruit trees, roses, and other
plants that attract aphids often contributes to argentine ant infestations.
Habitat – Argentine ants reside outdoors, usually in shallow
nests in the soil beneath a stone, board, or any other item that provides
protection. Small, medium, or large subcolonies will locate themselves in piles
of lumber, bricks, or debris; in landscape mulch; behind brick and stone veneer;
within and under insulation; and in wall voids or any other suitable void.
This ant is also very common in homes throughout most of the Gulf Coast states.
Tips for Control – The argentine ant can be nearly
impossible to control, especially during midsummer. At best, regular treatments keep as few ants as possible from
entering the home or business.