The body of an Insect is composed of three parts: the head, carrying antennas mandibles and eyes, thorax carrying the legs and the wings; finally the abdomen. Insects have six legs and the majority have wings. 

Insect class represents the 4/5° of all animal species alive currently. We know near one million species of Insects and much of others remain to discover. 

The Head of Ant

 Ant's head contains a brain of small size but, which is, in connection with many sensors and oral parts. Two eyesmade up formed by association of a great number of facets permit ant well see the movements but do not locate easy a motionless object. The made up eyes are not mobile in orbits, but fixed. Some ants have a sight better than others and a species of South America east is blind. 

The mandibles are very powerful and their side displacements permit ant to cut food or to transport building materials. Being well sharpened, they are dangerous weapons in the engagements that certain ants deliver to other species.

Before head you have two antennas fixed, sensors, very important for the ant which uses them to communicate with its sisters, to taste, for touching, to feel. A particle of food is initially touched, palpated in all directions
by the antennas and is thus recognized and appreciated before the oral parts did not intervene. The antennas are very important for the life and a ant which loses them in a combat die quickly. 

Ants never seem to be mislaid when they go from their nest towards the sources of food. When an ant found food it leaves an odorous trail on the ground. At certain species of tiny drops of an odorous liquid are emitted in trail by the abdomen while the ant returns to its nest. There, other alert individuals by the odor and particular movements of the antennas leave has their turn and take the track in opposite direction to arrive to the place or  is food discovered. Each colony of ants has its own odor and the individuals do not let themselves mislead by the odorous tracks of the ants of another colony. When a track is clearly shown, the ants quickly move along this one their bent antennas striking the ground like tiny canes. 

Antennas have other uses: an ant can touch another of them to require to eat. Some Coleopters and plant louses answer caresses of the antennas by emitting an appreciated juice of the ants the ants often clean their antennas. They make them pass on a hook of their forefeet which acts like a comb. 

The Thorax

Thorax of an ant which carries the three pairs of legs contains the salivary "heart" and glands being used for digestion. The saliva of the ants is used to nourish the young and to transform starch-based food into sugar. 

.Thorax of males and young females also contains muscles of wings. The queen thorax is still very broad because it also had wings before its final return to the anthill. The ants have neither arteries nor veins and their colourless blood circulate freely in the three parts of the body. 

 The Social Stomach

The strangest part of the body of an ant is undoubtedly are stomach ; in fact the ant has two separated stomachs with different functions. The first, or jabot, receives and preserves the food intended for the other ants; because of his role one often calls it "social stomach". Food goes initially in the jabot and from there, if the ant with need for food for itself, those are aspired towards a second stomach. When the workers return to the anthill, the jabot full with food, they discharge this one to feed the queen, the young and the ants remained into nest. This food of ant with ant is done in liquid form and in the jabot food is always liquid miellat, liquids extracted the body of the insects, etc. 

The ants do not have lungs: the air penetrates in their body by openings located on the sides of the body, the marks, then circulates has the interior by conduits, the tracheas, increasingly fine. 

Abdomen of many ants is finished by a pivot. Some, to manner of wasps, plunge their pivot in the body of their enemies or their victims. Others "syringe" poison has through special conduit pipe. The majority of the punctures of ants are not dangerous for man, some however, like those of ants of genera Solenopsis, are extremely painful.