Prothorax
The prothorax is the first segment of the Thorax of the insect located behind the head. It is still called T1. It carries the head and the first pair of legs.
Ses principal sclérites (plates of the Exosquelette) is the pronotum (dorsal face), the prosternum (face ventral), and the will propleurons (side) on each side. The prothorax never carries wings in the existing insects, though certain fossil groups had projections in the shape of wings. All the adult insects have legs on the prothorax, though some groups (for example, butterflies of the family of the Nymphalidae) present legs before very reduced. In many groups of insects, the pronotum is tiny room in the face, but at some others it is hypertrophied, as at all the Scarabée S (coleopters), at which the pronotum is increased to form the whole dorsal surface of the thorax, and at the majority of the bugs of the family of the Membracidé S (hémiptères), at which the pronotum is often increased in fantastic forms which increases their capacity to be camouflaged or their imitation.
| Random links: | Hospital mobile unit | Pendular migration | Greg Centauro | Cold filtration | Kaeso Fabius Vibulanus | Banlieue_noire_de_Colfax,_comté_d'Oceana,_Michigan |