plied to muscles.

Rotatory: an articulation that permits a rotating motion, e.g. a ball
and socket joint.

Rotula: a small round segment sometimes present between the joints
of antenna; and palpi: = torquillus.

Rotule: the trochantine.

Rotundate: rounded: in the form of a circle or segment of a circle:
without angles: said of margins when they pass gradually into each
other and do not form an angle at their point of junction.

Royal jelly: the food supplied to bee larva that develop into queens.

Royal pairs or Royalties: the sexually active males and females of
social insects.

Ruben: red, approaching carmine [alizar crimson].

Rubescent: reddish or becoming red.

Rubiginose: a rusty red [dragon's blood, but brighter].

Rubinous: ruby red: like the eye of a house fly.

Rudiment -any: the beginning of any structure or part before it has
developed.

Rufescent: reddish.

Rufous: brick-red [chronic yellow + dragon's blood].

Ruga, Rugulae: a wrinkle; small wrinkles.

Rugose -ous: wrinkled: with irregular waved elevated lines.

Rugulose -ous; minutely wrinkled.

Runcinate: notched: cut into several transverse acute segments
which point backward.

Ruptor ovi: = egg burster; q.v.

Rutilous: a shining bronze red.

S

Sabulose: sandy or gritty.

Sac: in Coccidae, the separate cottony envelope secreted by many
species.

Saccate: gibbous or inflated toward one end.

Saccule: a little sac or pouch.

Saccus: a lobe of ventral plate of 9th segment in female Lepidoptera.

Saddle: the chitinous plate on the anal siphon of Culicid larvae.

Sagitta: arrow-like spots on the wings of Lepidoptera and other
insects.

Sagittae: the inner pair of forceps in male genitalia of aculeate
Hymenoptera: see stipites.

Sagittal: equivalent to longitudinal.

Sagittal plane: the longitudinal vertical plane which divides an animal
into right and left halves.

Sagittate: shaped like an arrow head: elongate triangular.

Salient: projecting; jutting out.

Saliva: the secretion of the salivary glands that moistens and begins
the digestion of the food.

Salivary glands: glands that open into the mouth or at the beginning
of the alimentary canal, secreting a digestive, irritant or viscid
material.

Salivary receptacle: a small cavity above the opening of the salivary
duct, between labium and hypopharynx.

Salivary pump: applied to the chitinous, cup-like structure at the base
of the labial stylet