Métathorax
The métathorax is the third part (segment postpones) Thorax of the insect and is between the Mésothorax and the Abdomen. It is still called T3. It is this métathorax which carries the third pair of legs. It carries also the second pair of wings, which are transformed into haltères at the Diptères. It can be completely hidden at certain groups in particular at the Coléoptère S. the abdomen is attached there various ways.
Il can be completely hidden at certain groups in particular in the coleopters.
Ses principal sclérites is the métanotum (dorsal), the métasternum (ventral), and the métapleuron (side) on each side. The métathorax is the segment which carries the posterior wings at the majority of the winged insects, though sometimes those are reduced or modified, as at the dipterous ones, at which they are reduced to form haltères, or in the coleopters not flying, in which they can miss completely even if the former wings are always present. All the adult insects have legs on the métathorax. in the majority of the groups, the metanotum is reduced relative with the mesonotum. In the sub-order of the Apocrita among the hyménoptères, the first abdominal segment is amalgamated with the métathorax, and is then called the propodéum .
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