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.