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longhorn crazy ant
The longhorn crazy ant (''Paratrechina longicornis'') is a species of small dark-coloured insect in the family Formicidae. These ants are commonly called "crazy ants" because instead of following straight lines, they dash around erratically. They have a broad distribution, including much of the tropics and subtropics and are also found in buildings in more temperate regions, making them one of the most widespread ant species in the world. They do not sting people.
==Description==
The worker longhorn crazy ant is about long with a brownish-black head, thorax, petiole and gaster, often with a faint blue iridescence. The body has a few short whitish bristles and the antennae and limbs are pale brown. It is easy to distinguish this ant from other members of its genus, ''Paratrechina'', because its antennae and legs are so long. The first segment of each antenna is more than twice as long as the length between its base and the back edge of the head. The eyes are elliptical and set far back on the head. There is no sting, but the ant can bite and then curve its abdomen forwards and secrete formic acid onto the wound. A characteristic of this ant is the way that the workers move around jerkily in apparently random directions.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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