Tagma (biology)

Tagmata (singular Tagma, Greek τάγμα tagma, Pl τάγματα tagmata ) are parts of the body in animals with segmented body, which consist of several similar developed or fused segments and usually form a functional unit. The emergence of functionally differentiated body sections ( tagmata ) by specialization of segment groups, ie at heteronomous segmentation, Tagmatisierung is called. The first Tagma consists in arthropods ( arthropods ) are always of fused segments and, depending on its function as a head ( caput), Cephalon, prosoma or cephalothorax called. The following fuselage can be segmented evenly, but is usually divided into two distinguishable tagmata. In insects, the body, " breast " (thorax, three segments) and " abdomen " (abdomen, eleven or fewer segments Telson ), for example in the tagmata "head" (caput, Acron six segments ) analyzed.