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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 sub colonies located in various suitable harborages
connected by established trunk trails. These sub colonies will
number anywhere from a few hundred to a few thousand individuals.
Behavior
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 sub colonies located in various suitable harborages
connected by established trunk trails. These sub colonies will
number from a few hundred to thousands of individuals. 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 mealy bugs. 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 sub colonies 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. Argentine ants are the most common invaders of
homes in Southern California. 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 in areas such as Southern California. At best,
regular treatments keep as few ants as possible from entering the
home or business. General tips for limiting ant infestations
include:
-
Eliminating
piles of lumber, bricks or other debris that could serve as a
nesting site for ants.
-
Keeping
landscape mulch less than 2 inches thick and at least 12 inches
away from foundations.
-
Ensuring
the sprinkler system does not spray directly onto the
foundation.
-
Sealing as
many cracks in the building's exterior as possible.
-
Keeping
tree and shrub branches trimmed to prevent touching the home.
Considering re-landscaping to avoid using plants that are prone to
aphids and similar insects. At the very least, treat such plants for
aphids regularly. |
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