The thorax is one of the three main body parts of an insect. The thorax is the middle segment, behind the head and before the abdomen. The six legs and two pairs of wings (if present) are attached to the thorax. The thorax contains the locomotive musculature and is also well supplied with trachae to supply the muscles with oxygen.

The thorax is further divided into three sections:

  1. Prothorax (closest to the head)
  2. Mesothorax
  3. Metathorax (closest to the abdomen)
An illustration of the general structure of an insect.

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