TEGULA: the Latin term for the convex covering tile of a roof, as distinguished from the imbrex, the concave tile. It is made by overlapping plates. It is also a small appendage situated above the base of the wings of Hymenoptera and attached to the mesonotum. Latin is an ancient Indo-European language originally spoken in the region around Rome called Latium. ... In mathematics, an object is convex if for any pair of points within the object, any point on the straight line segment that joins them is also within the object. ... An imbrex (plural imbrices) was a flat roofing tile used in ancient Greek and Roman architecture. ... In geometry, concavity is a property of certain geometric figures, and in calculus, a property of certain graphs of functions. ... An appendage is, in general, an external body part that projects from the body, or a natural prolongation or projection from a part of any organism. ... Suborders Apocrita Symphyta Many families, see article Hymenoptera is one of the larger orders of Insects, comprising the sawflies, wasps, bees, and ants. ...

This article incorporates text from the 1911 Encyclopædia Britannica, a publication in the public domain. The 11th edition of the Encyclopædia Britannica (1910-1911) is the most famous edition of the Encyclopædia Britannica. ... The public domain comprises the body of all creative works and other knowledge—writing, artwork, music, science, inventions, and others—in which no person or organization has any proprietary interest. ...