army ant

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Figure 35: Bivouac of army ants (Eciton) between trees, which are about 14 inches apart. Inset is detail of bivouac magnified slightly larger than life.

Observe an Eciton army ant colony migrating by night and forming a bivouac nest entirely out of themselves

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army ant

insect

Also known as: Dorylinae, legionary ant

Learn about this topic in these articles:

behaviour

In ant: Notable ant behaviors
Army ants, of the subfamily Dorylinae, are nomadic and notorious for the destruction of plant and animal life in their path. The army ants of tropical America (Eciton), for example, travel in columns, eating insects and other invertebrates along the way. Periodically, the colony rests…
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features of Hymenoptera

In hymenopteran: Importance
…habit of legionary ants, or army ants (Dorylinae), is of particular importance in South America. Armies of as many as 1,500,000 such insects destroy almost all animal life they encounter. Leaf-cutting ants (Atta) are serious pests, especially in Brazil, where they may ravage extensive plantings of cultivated plants overnight. These…
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followed by passerines

In passeriform: Ant-following
…the New World tropics, nomadic army ants move in huge troops, swarming over the forest floor in columns as wide as 10 metres (about 30 feet) or more. Because the ants devour all the small animal life in their path, a moving column of them is edged by fleeing insects,…
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study by Schneirla

In Theodore Christian Schneirla
…on the behaviour patterns of army ants.
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