lteres in Diptera:
in this order Packard uses squama for the lobed scale and restricts
alula to the lobe-like appendage: Osten-Sacken uses squama for the
posterior scale alone and antisquama for the anterior.

Squames: the flattened, fimbriated or spine-like marginal processes of
the pygidium in Diaspinae, other than the lobes and true spines: =
"plates," of Comst.; or "scaly hairs" of Maskell.

Squamiform: having a scale-like form.

Squamose -ous: scaly or covered with scales.

Squamula: a small corneous scale covering the base of primaries in
some insects: = tegula, q.v.: in Diptera, = alula.

Squarrous: scurfy: clothed with rough scales differing in direction,
standing upright, or not parallel to the surface.

Stadium -ia: the interval between the molts of larvae:= instar q.v.:
any one period in the development of an insect.

Stage: refers to the period of development; e.g. larval, pupal, etc.

Stalked bodies: = gyri cerebrales; q.v.

Stellate: star-shaped; with four or five radiating lines.

Stelocyttares: social wasps in which the comb layers of the nest are
supported by pillars and not connected with the envelope: see
poecilocyttares and phragmocyttares.

Stemapoda: the modified filamentous anal legs of Cerura and other
Notodontid larvae.

Stemmata: simple eyes or ocelli; q.v.

Stem-mother: in plant lice; that form hatching from the winter egg,
which starts a series of agamic summer generations.

Stenocephalous: with a narrow, elongate head.

Stenorhynchan: narrow beaked or snouted.

Stenothorax: a supposed ring between pro- and meso-thorax.

Stercoral: relating or pertaining to excrement.

Sterile: not capable of reproducing its kind.

Sternal orifice: in Perlids; a peculiar slit on each side of the sternum,
extending inward and ending blindly := furcal orifice.

Sternal spatula: = breast-bone; q.v.

Sternauli: the short and often obsolete furrows on either side of the
mesosternum in Hymenoptera.

Sternellum: the second sclerite of the ventral part of each thoracic
segment frequently divided into longitudinal parts which may be
widely separated.

Sternite: the ventral piece in a ring or segment.

Sternopleura: in Diptera, the lower part of the pleura, below the
sternopleural suture and above the front coxa.

Sternopleural bristles: in Diptera, are situated on the sternopleura
below the sternopleural suture.

Sternopleural suture: in Diptera, is below and nearly parallel with
dors