Tegula n. : A small appendage situated above the base of the wings of Hymenoptera and attached to the mesonotum.

Example:
In the Philippines, how much does a Tegula Concrete Roofing Costs Per Square Meter?

Taxonomy
tegulae, tile, Imbrex and tegula, joints, roof, borders, free encyclopedia, Greek, Rome, temples, flat tile, Oxford, England, edges, wet clay, rainwater, canalis, Archaeopress, Tiles of marble.

Defination from the web:
tegula (a) overlaps the one below it, with its raised borders tapering in to nestle between the next tile's borders. ... The imbrex and tegula (plurals imbrices and tegulae) were overlapping roof tiles used in ancient Greek and Roman architecture as a waterproof and ...