Labro-frontal lobes: of brain, = trito-cerebrum; q.v.
Labrum: the upper lip; covers the base of the mandible and forms the roof of the mouth.
Labrum-epipharynx: in the mouth of piercing Diptera is the central unpaired lancet.
Lac: a mixture of resin, wax and other substances produced by certain scale insects as a protective covering.
Lacer: a lappet; applied to a margin with irregular, broad and deep emarginations, leaving lappet-like intervals.
Lacerated: ragged; torn in appearance; see lacer.
Lacinia: the inner lobe of first maxilla, articulated to the stipes, bearing brushes of hair or spines: a blade: in Diptera, forms a flat lancet-like piercing structure and is never jointed.
Lacinia exteriores and interiores: in Apidae, the palpiger and paraglossa often used for the gales and lacinia of maxilla.
Laciniated: jagged; cut into irregular fragments.
Lacte: milk-white.