Part 148

Tegulae: small, more or less cup-like scales at the base of primaries in many insects; specifically in Hymenoptera: in Lepidoptera, = the patagia or shoulder tippets; but the homology is disputed; also applied to the lappet-like pieces forming the collar: in Diptera, the alulae, q.v.: the latter use is unfortunate and should be abandoned; the first definition should limit the use of the term: see aileron.

Tegument: a covering surface or skin.

Teleodont: applied to those forms of male Lucanids bearing the largest mandibles: see mesodont, amphiodont, priodont.

Telescopic: arranged so that one portion of an organ or process may be drawn into another, like the joints of a telescope.

Telson: a terminal tubercle bearing the anal opening: the anal segment of the insect embryo.

Telum: a spear, or spear-shaped process.

Temple: the posterior part of the gena; behind, before or beneath the eye.

Tempora: the temples.

Temporal margins: in Mallophaga, the lateral margins of the hind head.

Tenaculum: in Collembola, a small organ which holds the furcula in position when at rest: = catch.

Tenant hair: see tenent hair.

Tendo: the anal area of secondaries when it forms a groove for the abdomen: has also been called frenum and frenulum: in Trichoptera, a small elliptical space at base of hind wings near base of anal veins and behind the trochlea.

Tendon: the slender, chitinous plates, bands, strap- or cup-shaped pieces, to which muscles are attached for moving appendages: see apodeme.

Tenent hair: specialized hair adapted for clinging or clasping.

Teneral: that state of the imago just after its exclusion from pupa or nymph, in which neither coloring nor clothing is fully developed.

Tensor: a muscle which stretches a membrane.

Tentacle: a flexible sensory or tactile process; in some cases retractile: usually prefixed by a descriptive term indicating the structure to which it is attached.

Tentacular -um: retractile processes on the larvae of Lepidoptera.

Tentaculate: a margin when fringed with soft tactile processes.

Tentiform: shaped like a tent: see mines.

Tentoria: Diptera; two hollow, cylindrical struts which pass from the ventral border of the occipital foramen to the cheeks.

Tentorium: a chitinous frame-work within the head, upon which the brain rests.

Tenuis: thin, slender; long drawn out.

Terebra: a borer or piercer: an ovipositor fitted for boring or cutting as in saw-flies: a mandibular sclerite articulated to the basalis; forms the point of the structure and = the galea of the maxilla.

Terebrant: with an ovipositor fitted for piercing or boring.

Terebrantia: Hymenoptera with sessile abdomen and valved ovipositors: Thripids in which the ovipositor of female is borer-like.

Teres, Terete: cylindric or nearly so.

Tergal: belonging to the primitively upper surface: see dorsal.