Explanation of Terms Used in Entomology | Page 6

usually applied to wing veins, often
to markings; sometimes used like stigma, q.v.; also in Neuroptera, a
series of cross-veinlets nearly in one row; a connecting series of
veinlets.
Anceps: two-edged; similar to ensiform, q.v.
Ancestral: primitive; inherited from an earlier form or ancestor.
Anchor process: = breastbone, q.v.
Anchylosed: grown together at a joint.
Ancipital: with two opposite edges or angles.
Androconia: specialized, usually small scales of peculiar form, found
localized on some male butterflies.
Androgynous: uniting the characters of both sexes.
Aneurose: a wing without veins except near costa.
Angle: of tegmina, "is the longitudinal ridge formed along the
interno-median by the sudden flexure from the horizontal to the vertical
portion when closed."
Angular area: Hym.; the posterior of the three areas on the metanotum
between the lateral and pleural carinae; = 3rd pleural area.
Angulate: forming an angle; when two margins meet in an angle.
Angulose: having angles.
Angulus: forming an angle: = angulate.
Angustatus: narrowed; narrowly drawn out.
Anisoptera: that division of the Odonata in which the hind wings are
wider, especially at base, than the front wings.

Annectent: applied to connecting or intermediate forms.
Annelet or annellus: Hym.; small ring-joints between scape and funicle.
Annulate: ringed or marked with colored bands.
Annulet: a small or narrow ring or annulus.
Annuliform: in the form of rings or segments.
Annulus: a ring encircling a joint, segment, spot or mark; sometimes
applied to the inner ring encircling the mouth opening.
Annulus antennalis: the ring sclerite of the head into which the basal
segment of the antennae is inserted; = antennal sclerite.
Anomalous: unusual; departing widely from the usual type.
Anoplura: wingless species without metamorphosis, habits epizoötic,
thoracic segments similarly developed: a composite aggregation which
includes both the biting and sucking lice.
Ante: before; used as a prefix.
Ante-alar sinus: Odonata; a grooved area extending transversely
immediately in front of the base of each front wing.
Ante-apical: just before the apex.
Ante-clypeus: Odonata; the lower of the two divisions of the clypeus;
the inferior half of the clypeus whenever there is any apparent line of
demarcation: = clypeus-anterior; infra-clypeus; rhinarium; second
clypeus.
Ante-coxal piece: Coleoptera; that portion of the metasternum lying in
front of the posterior coxae, often passing between them and meeting
the abdomen of mandible, is the lateral sclerite of the clypeus; - one on
each side.

Ante-cubital: see ante-nodal, cross veins and spaces.
Ante-furca: an internal forked process from the prosternum, to which
muscles are attached.
Ante-humeral: relating to the space just before origin of wings.
Ante-humeral stripe: Odonata; a discolored stripe, approximately
parallel to, but to the inner side of the humeral suture, q.v.
Antemedial line: = t. a. line, q.v.
Antemedian: Diptera; applied to leg-bristles situated before the middle.
Antenna -ae: two jointed, sensory organs, borne, one on each side of
the head, commonly termed horns or feelers.
Antenna-cleaner: a fringed excavation on the interior base of the 1st
segment of the anterior tarsi of Hymenoptera which, when covered by
the movable process from the end of the tibia, forms an opening
through which the antennae may be drawn: similar structures are on the
fore tibiae of Carabid beetles: tarsal claws are also used by various
insects to clean antennae.
Antennal appendage: in Mallophaga, a projecting process of the 1st or
3rd segment in the male.
Antennal formula: in Coccidae; made by enumerating the antennal
joints in the order of their length, beginning with the longest and
bracketing together those of the same length.
Antennal fossa -w: grooves or cavities in which antennae are located or
concealed: = a. grooves: antennary fossa.
Antennal fovea: Diptera; a groove or grooves in the middle of the face
as though for the lodgment of the antennae; bounded on the sides by
the facial ridges.
Antennal foveolae: Orthoptera; the pits between frontal costa and

lateral carinae, in which the antennae are inserted.
Antennal grooves: see antennal fossa.
Antennal lobes: of brain, see deuto-cerebrum.
Antennal organs: in Collembola are sensory structures on the distal
segment.
Antennal process: Diptera; the frontal protuberance upon which the
antennae are inserted.
Antennal sclerite: see annulus antennalis.
Antennal segment: the second or deutocerebral segment of head.
Antennary fossa: see antennal fossa.
Antennary furrow: in Mallophaga, grooves on the under side of the
head in which the antennae lie.
Antenniferous: bearing antennae.
Antenniform: made up like, or having the appearance of antennae.
Antennule: a small antennae or feeler-like process.
Antenodal cells: Odonata; in Agrionidae the cells included between the
short sector (M 4 Comst.) and the upper sector of the triangle (Cu 1,
Comst.), and between the quadrilateral (or quadrangle) and the vein
descending from the nodus.
Antenodal cross veins: Odonata; extend between costa and sub-costa,
and between sub-costa and media, from the base to the nodus, forming
the ante-nodal or ante-cubital cells: = ante-cubital.
Antenodal costal spaces: