Lucian Müller
The céphalothorax is the former part of the body of the Araignée S (number 2 on the figure attached). It is resulting from the meeting, during the evolution, of the two former parts, the head and the thorax of the Insecte S.
At the others Arachnida S, the céphalothorax and the abdomen can be amalgamated as at the Opilion S or the Acarien S.
The céphalothorax of the spiders carries the visual bodies, the ambulatory legs (eight), the maxillipedes (which, in the males, carry the bodies of coupling), the Chélicère S (which almost at all the species make it possible the spider to inject its venom), the mouth and the ganglia cephalic.
The name of céphalothorax is also used, for the same reasons, ches the Crustacé S.
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