The term notum (from ancient Greek νῶτον nōton , German “back” ) describes the anterior sclerotized (hardened) part of the tergum in insects . The nota of the three segments of the thorax are called pronotum (front chest) , mesonotum (middle chest) and metanotum (rear chest) from front to back .
Each secondary delimited by Notum district is as Tergit referred to, for example neck plate (Proscutum) and tag ( scutellum ). In the case of segments of the abdomen in particular , the term tergite is often used for the entire notum.
- Hermann Weber: Textbook of Entomology. Gustav Fischer Verlag Stuttgart, 1968