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Argentine Ant


Common Name: Ant – Argentine ant
Latin Name: Iridomyrmex humilis
Common Family Name: Ants
Latin Family Name: Formicidae

Hydrex Treatment for Argentine Ant

Characteristics Important in Control:Control of most ants includes correction of the attractions that drew them to a property, including harborage sites, food sources, and moisture conditions. Elimination of insects that provide protein or honeydew sources reduces ant foraging in an area, very important for this species, and cleanup of unnecessary debris or objects on the soil that provide harborage eliminates nesting. Ant bait products in granular, liquid, or gel formulations can be effective, and carbohydrate baits may be preferred. Locating the nest of these ants is critical, and if it is found treatment directly into the nest with a residual dust insecticide can be effective.

Origin: Thought to have arrived from Brazil in ships transporting coffee around 1891, and now found throughout North America, in Hawaii, and on most other continents throughout the world.

Biology: Though the Argentine Ant is a small, non-stinging ant, it is a very territorial and aggressive ant that will drive away or kill competing ant species. Neighboring colonies of Argentine ants appear not to be aggressive toward each other, allowing for the rapid spread and domination by this species. Colonies contain thousands of workers and many queens, and mating will take place within the confines of the colony. New colonies are often formed by budding off from the parent colony. Nesting is usually in the soil, commonly under concrete slabs, but may also be found in any other convenient void, such as in trees, wall voids, under insulation, or under debris on the soil. Soil nests are generally very shallow. While protein foods are part of their diet, their preferred foods are sugars, including household food products, fruits in gardens, and honeydew.

Identification: This is a single-node species with small workers only about 2.5 mm long, and with all workers the same size. The Argentine can be separated from the similar Odorous House ant by its visible node and by its dull gray-black to gray-brown color. When viewed from the side the Argentine Ant has a distinct dip in the top of the thorax. There is no circle of hairs around the anal opening. The first segment of the antenna is not longer than the head, and the legs are not noticeably long, as compared with the crazy ant.



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Hydrex Pest Control of San Diego and Imperial Counties is Certified by NPMPA and they have passed the requirements to become a member of NPMPA and a member in good standing.
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