Answer: Labeled diagrams.
Comment: The article is replete with examples of labeled diagrams, including the parts of a mosquito. The point is that such labeled diagrams provide the precise words for naming the parts an animal, plant, or object. An often overlooked vocabulary lesson. RayS.
Title: “Mimetic Documents: Diagrams. PB Mosenthal. Journal of Reading (December 1990), 290-294.