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Ant
Formicidae

Photo: A leaf-cutter ant carrying leaf
A leaf-cutter ant
Photograph by Roy Toft

Ant Profile

Ants are common insects, but they have some unique capabilities. More than 10,000 known ant species occur around the world. They are especially prevalent in tropical forests, where they may comprise up to half of all the insects living in some locations.

Ants look much like termites, and the two are often confused—especially by nervous homeowners. However, ants have a narrow "waist" between the abdomen and thorax, which termites do not. Ants also have large heads, elbowed antennae, and powerful jaws. These insects belong to the order Hymenoptera, which includes wasps and bees.

Enthusiastically social insects, ants typically live in structured nest communities that may be located underground, in ground-level mounds, or in trees. Carpenter ants nest in wood and can be destructive to buildings. Some species, such as army ants, defy the norm and do not have permanent homes.

Ant communities are headed by a queen or queens, whose function in life is to lay thousands of eggs that will ensure the survival of the colony. Workers (the ants typically seen by humans) are wingless females that never reproduce, but instead forage for food, care for the queen's offspring, work on the nest, protect the community, and perform many other duties.

Male ants often have only one role—mating with the queen. After they have performed this function, they may die.

Ants communicate and cooperate by using chemicals that can alert others to danger or lead them to a promising food source. They typically eat nectar, seeds, fungus, or insects. However, some species have diets that are more unusual. Army ants may prey on reptiles, birds, or even small mammals. One Amazon species (Allomerus decemarticulatus) cooperatively builds extensive traps from plant fiber. These traps have many holes and, when an insect steps on one, hundreds of ants inside use the openings to seize it with their jaws.

Fast Facts

Type: Bug
Diet: Omnivore
Average lifespan in the wild: Several weeks to several years
Size: 0.08 to 1 in (2 to 25 mm)
Group name: Army or colony
Did you know? Ants can lift and carry more than three times their own weight.
Size relative to a paper clip:
Illustration of the animal's relative size

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