Definitions For Glossary Terms

TARSAL CLAWS
Paired hooked (claw-like) structures projecting from the apex of the last tarsal segment on either side of the arolium of the pretarsus.
TARSAL COMB
See basitarsal comb
TARSAL SEGMENT
One segment of the tarsus. [drawing]
TARSOMERE
See tarsal segment
TARSUS
Fifth segment of a leg that basally articulates to the tibia and normally consists of three to five subsegments. [drawing]
TEGULA
Small, typically oval sclerite that covers the region of the mesothorax where the forewing and thorax articulate through the axillary sclerites. [drawing][photo]
TEMPLE
Region on the top of the head behind each eye (see also vertex and gena). [drawing][photo]
TENTORIAL ARMS
Paired cuticular invaginations within the head that form part of the tentorium, which often are externally visible on the front of the head below the toruli as the anterior tentorial pits and on the back of the head near the occipital foramen as the posterior tentorial pits.
TENTORIUM
Internal, usually more or less H-like endoskeleton of the head that serves as a site for muscle attachment and that braces the head.
TERGITE
A dorsal sclerite of any segment of the thorax or abdomen when it consists of a single sclerite, often used synonymously with tergum (see also notum). [drawing]
TERGUM
(pl., terga) The upper or dorsal surface of any segment of the thorax or abdomen, whether consisting of one or more sclerites (see also tergite and notum). [drawing]
TERMINAL PROCESS OF STIGMAL VEIN
Term sometimes used for that portion of the stigmal vein that extends beyond the uncus.
TERMINAL SPINE
Needle-like projection from the apex of the clava; sometimes called the spicula. [photo]
THIRD AXILLARY SCLERITE
One of three axillary sclerites of the forewing; typically an elongate twisted sclerite that articulates distally with the remnants of the anal vein and ventrally with the dorsal margin of the second axillary sclerite. [photo]
THIRD VALVULAE
See ovipositor sheaths
THORAX
(pl., thoraces) The middle of the three main body regions of an insect composed of the prothorax, mesothorax and metathorax; which bear the legs and normally two pairs of wings, sometimes used as synonym of mesosoma. [drawing]
TIBIA
Fourth segment of a leg that articulates basally with the femur and apically with the tarsus. [drawing]
TIBIAL COMB
See protibial comb
TIBIAL SPUR
One or two longer and sometimes otherwise modified, articulated spines at or near the ventroapical margin of a tibia; the protibia and mesotibia each have a single spur and the metatibia has one or two spurs (see also calcar). [drawing][photo]
TORULUS
(pl., toruli) Socket on the head in which the antenna articulates. [drawing][photo]
TRABECULA
(pl., trabeculae) In Mymaridae, term used for an H-like pattern of lines on the face and vertex, which consists of a transverse line on the upper face that connects with lines along the upper and inner margins of each eye; the lines are usually darker than the surrounding cuticle because they are thickened regions resulting from inrolled cuticle. [photo]
TRANSCUTELLAR SULCUS/SUTURE
See frenal line/sulcus/carina
TRANSEPIMERAL SULCUS
Typically a partly transverse groove or line on the mesepimeron that differentiates an upper mesepimeron and lower mesepimeron; when present it is often arched posterodorsally from near the mesocoxa, in which case it can also delimit a trochantinal lobe anterior to the mesocoxa, or it extends diagonally or transversely from the mesopleural suture, but it is quite varied and sometimes is reduced to a single pit. [drawing][photo][photo][photo]
TRANSEPISTERNAL LINE/SULCUS
A line of lighter color, change of sculpture, or more distinct groove on the mesepisternum that extends from the anterolateral corner of the mesocoxa toward the procoxa and, when present, divides the mesepisternum into an upper mesepisternum and lower mesepisternum (see also sternopleural suture). [drawing][photo][photo]
TRANSOCCIPITAL SUTURE
In Mymaridae, a transverse groove extending entirely across the head between the eyes behind the vertexal sulcus. [photo][photo]
TRANSSCUTAL ARTICULATION
Usually a more or less transverse line of weakness across the mesonotum at the level of the forewings that differentiates an anterior mesoscutum and posterior scutellar-axillar complex, and that permits flexion of the mesonotum for flight; often called the transscutal sulcus or suture. [drawing][photo]
TRANSVERSE
Broader than long, or at a right angle to the longitudinal axis.
TRANSVERSE SUTURE
In Mymaridae, a horizontal suture between the eyes above the toruli that forms the ventral margin of the transverse trabecula and dorsal margin of the face. [photo][photo]
TRANSVERSE TRABECULA
In Mymaridae, the horizontal band of thickened, often darker cuticle on the head that extends between each eye below the anterior ocellus and above the toruli, which laterally terminates at the juncture of the supraorbital trabecula and preorbital trabecula (see also transverse suture). [photo]
TRAPEZOIDAL
A four sided shape in which two of the sides are parallel and two are not.
TRICHOID SENSILLUM
See seta
TROCHANTELLUS
Basally delineated region of the femur that often looks like a separate segment similar to the trochanter. [drawing]
TROCHANTER
Second segment of a leg that articulates basally with the coxa and apically with the femur. [drawing][photo]
TROCHANTINAL LOBE
Term sometimes used (especially Eulophidae) for a slender region along the extreme posterior margin of the mesepisternum anterior to each mesocoxa, and not homologous with mesotrochantinal lobe as used in Eupelmidae. [photo]
TRUNCATE
Cut off squarely, i.e. with the apical, transverse margin straight (compare with emarginate).