Definitions For Glossary Terms
- The last or posteriormost of the three main body regions of an
insect. In chalcids, like other apocritan Hymenoptera, the first 'true'
abdominal segment (see propodeum)
is rigidly attached to the thorax and there is a more or less flexible
articulation between this fused segment and the 'apparent abdomen',
which in chalcids is usually termed the
metasoma or gaster.
- ACETABULAR CARINA
- Term sometimes used for the transverse, ventral portion of the
epicnemial carina on the
mesothoracic venter under
or behind the procoxae. [photo]
- The cavity into which an appendage is articulated.
- ACICULAR / ACICULATE
- ACROPLEURAL SULCUS
- The curved line or groove on the mesopleuron that distinguishes the
posterior and ventral limits of the acropleuron
or subalar area.
- Synonym of subalar area, used
sometimes for the primitively small dorsal region of the mesopleuron
found in most chalcid families and, more commonly, for the derived
enlarged region characteristic of Encyrtidae, Tanaostigmatidae, most
Eupelmidae and some Aphelinidae. [drawing]
- Tapering to a long point.
- ADMARGINAL CELL
- Term sometimes used for a longitudinal bare region on the forewing
disc immediately behind the
marginal vein bounded
posteriorly by the
abscissa of the Radial Sector (RS1) setal line.
- ADMARGINAL SETAE
- Row of differentiated setae on the ventral surface of the forewing
behind the marginal vein.
- ADNOTAULAR SETAE
- One or more rows of differentiated setae on the
adjacent to each notaulus.
- ADORAL DEPRESSION
See malar depression
- ADPETIOLAR STRIP
- Variously differentiated posteromedian region of the propodeum
anterior to the propodeal
foramen; sometimes called the adpetiolar triangle.
- ADPETIOLAR TRIANGLE
See adpetiolar strip
- Lying against or along a structure (compare with
- ADSTIGMAL SETAE
- A row of long setae aligned in front of the stigmal vein in some
- ADVANCED AXILLA
- An axilla that projects distinctly
anterior to the base of the scutellum
because the transscutal
articulation is deeply sinuate.
- AEDEAGAL APODEME
- Rod-like structure extending anteriorly from each basolateral margin
of the aedeagus.
- Median lobe of the male genital capsule that is surrounded by the
phallobase and through which the
sperm duct traverses. [drawing]
- ALITRUNK See
- ANAL FILAMENT
- A membranous extension from behind the anus that covers the
ovipositor sheaths dorsally in some females with an
- ANAL SCLERITE
- In some female Eupelmidae, a more or less sclerotized, flap-like
sclerite that covers the anus.
- ANAL VEIN (A) SETAL LINE
- In Trichogrammatidae, used for a longitudinal setal line near the
posterior margin of the wing behind the
branch of cubital vein (CU2) setal line; analogous or homologous
with the subcubital setal
line of other chalcids. [drawing]
- ANAPLEURAL SUTURE
- Term that has been very rarely used in Agaonidae for the
acropleural sulcus and
which is not homologous with the true anapleural suture.
- Term that has been very rarely used in the Agaonidae for the
- In the shape of a disk, transverse or ring-like.
- (pl., anelli) One or more, usually transverse or ring-like,
basal flagellar segments that lack
- Term sometimes used for a slender depressed or rim-like, smooth
apical margin of the clypeus.
- Paired segmental sensory appendage on the head, composed of the
- ANTENNAL CLEANING ORGAN
- Term used for the composite structure of the
calcar of the foretibia and the
strigil of the foretarsus, through
which the antennae are stroked to clean them.
- ANTENNAL FORMULA
- The number of units comprising the three segments of the antenna and
the three regions of the flagellum, that is, the
scape and pedicel
as well as the anelli,
clava of the flagellum; for example, an
antenna with a flagellum having 3 anelli, 5 funicular segments, and 3
claval segments would have an antennal formula of 11353.
- (adv., anteriorly) Toward or at the head (front) end of the
body or structure. [drawing]
- ANTERIOR ALAR PLATE
- ANTERIOR NOTAL WING
- A bilobed projection of the preaxilla
with which the first
axillary sclerite of the forewing articulates.
- ANTERIOR OCELLUS
- Middle, unpaired ocellus that
normally is anterior to the paired posterior ocelli when three ocelli
are present; sometimes called the median ocellus.
- ANTERIOR SCUTELLUM
- In Mymaridae, an anterior portion of the
scutellum that is differentiated by
a transverse line. [photo]
- ANTERIOR TENTORIAL PITS
- Paired pits sometimes visible on the lower face that are external
indications of the anterior tentorial
arms and that partially delimit the lateral limit of the clypeus.
- Prefix meaning toward the head or front end of a structure, e.g.
- APICAL / APEX
- (adv., apically) The point farthest away from the body, at to
toward the end of an appendage; synonymous with distal.
- Prefix meaning toward the apex or far end of an appendage, or region
or margin of a sclerite farthest away from the transverse midline of the
body, e.g. apicolateral.
- The median pad-like lobe that lies between the
tarsal claws of a
- (pl., aulaces) A longitudinal groove along the dorsal length
of each first valvula, into
which is fitted the rhachis of the
second valvulae to form the
interlocking mechanism of the ovipositor
- (pl., axillae) Usually paired, often triangular regions
posterior to the mesoscutum that
usually appear as anterolateral regions of the
scutellum; the term is usually used
for the entire structure but each axilla has both a dorsal surface and a
lateral panel of the
- AXILLAR CARINA
- Lateral, carinate margin of the axilla which differentiates the
dorsal surface of the axilla from the
lateral panel of the
- AXILLARY SCLERITES
- Sclerites at the base of both the fore and hind wings, by which the
wings are attached and articulate with the thorax (see also
- (pl., axillulae) Lateral, usually more or less vertical
subdivision of the scutellum
differentiated from the rest of the scutellum by the
or sublateral groove and
from the axilla by the
- AXILLULAR GROOVE/CARINA
- In most chalcids except Eulophidae, term used for a longitudinal
groove (very rarely a carina) very close to the side of the scutellum
that differentiate a lateral, usually more or less vertical scutellar
region, the axillula, between the
groove/carina and the usually posteriorly sloping
axilla (see also