part of develops from sclerite mesonotum scutum https://www.ento.csiro.au/biology/drosophila/melanogaster.html?postsutural%20mesonotum The usage here follows Bryant, 1975. Ferris, 1950, uses the term to cover the entire mesothoracic tergum anterior to the scutellum. Usage in the Dictionary of Insect Morphology is either equivalent to or broader than that of Ferris: 'The whole upper part of the usually winged meso- and metathorax resembling a shield.' Some authors use the term 'notum' to refer to scutum. The part of the mesothoracic tergum between the intrascutal suture (FBbt:00004602) and the scutoscutellar suture (FBbt:00004602). FBbt:00004583 notum fly_anatomy.ontology presumptive scutum