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Little Black Ants’ Habitat

Little black ants (Monomorium minimum) dwell in areas of Mexico, southern Canada and United States. They are widespread in urban and industrial surroundings. Little black ant colonies can house several thousands of individuals and are located primarily in dark, protected areas.

Little black ants prefer to live outdoors in decaying wood, but will also build their nests in cracks in walls or cement. Outside, little black ants establish their nests under rocks or stones and in rotting logs, gardens and other open areas. Their nests can also be located within small craters of very fine soil. Indoors, little black ants build their nests in voids and cavities such as wall voids.

Black Ants Drawn to Food
Little Black Ants Drawn to Food

They at times can forage for food indoors. Little black ant workers forage with scent-marked trails. They feed on aphids and plant secretions, as well as sweets, greasy items, meats, fruits and vegetables.

As their name suggests, little black ants are jet-black in color. Worker ants are 1.5 to 2 mm, and queen ants measure 4 mm in length. The antennae of black ants have 12 segments, which end in three-segmented clubs. Although little black ants do have stingers, they are usually small and weak.

Colonies of little black ants are moderate to large, containing two or more queens. They form mating swarms from June to August in the United States. Because little black ants can invade a home, contact a pest control professional to address an infestation.

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