January 18, 2022

The tergum (Tergite, tergum, plural: tergites, terga) is the exoskeleton that covers the back of the arthropod's body. The name comes from the Latin word "tergum," which means "back." As a general rule, it has one sheet per segment, but depending on the taxon, it may be further subdivided into multiple exoskeletons, or the adjacent back plates may be fused anteriorly and posteriorly. The edges that jut out to the left and right of the back plate are called tergopleura (plural: tergopleurae), pleurotergite (plural: pleurotergites), etc., and in the case of millipedes, they are called paranota. . . . Usually, the tergum specializes in the dorsal exoskeleton of the torso (chest and abdomen) and posterior body, which in the head, cephalothorax, and anterior body is the head shield, carapace, prosomal dorsal shield. , Peltidium) etc. are distinguished from the backboard. In the case of insects, the thoracic ergum is distinguished from the abdominal ergum as "notum" in English.


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