Scrobiculated: having the surface covered with deep round pits.
Scrotal membrane: the envelope covering the testes in some insects.
Scrotiform: purse-shaped.
Scrotum: = scrotal membrane; q, v.
Sculpture: the markings or pattern of impression or elevation on an elytra or other body surface.
Sculptured: a surface, when marked with elevations or depressions or both, arranged in some definite manner.
Scutate-iform: shield or buckler-shaped.
Scutcheon: = scutellum; q.v.: also used by some authors (Walker) for the pronotum in Homoptera.
Scutel: = scutellum: q.v.
Scutellar angle: of elytra is next to the scutel when wing is expanded.