Insects are an extremely diverse type of animal. All have an external supporting structure, called an exoskleton and all have bodies that can be divided into three major areas: the head, the thorax and the abdomen.
The head carries the eyes, mouthparts and a pair of sensory antenna. The thorax provides support for three pair of legs and usually two pair of wings. Some insects, such as ants and termites, do not have wings. The abdomen contains most of the insect's digestive system and it reproductive organs.
Parts vary greatly by species, but the grasshopper shown above is somewhat representational. On the pages that follow, you will find additional information on heads, legs and wings.
Information provided by: http://www.arthropod.net