scutellum

(noun)

noun

1. Any of several shield-shaped structures in insects, grasses etc

2. (lichenology) A rounded apothecium having an elevated rim formed of the proper thallus, the fructification of certain lichens.

3. (zoology) The third of the four pieces forming the upper part of a thoracic segment of an insect. It follows the scutum, and is followed by the small postscutellum.

4. (zoology) One of the transverse scales on the tarsi and toes of birds.