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.
Lacteal: relating to milk; milky in appearance.
Lactescent: secreting or yielding a milky fluid.
Lacteous -eus: white, with a slight bluish tinge, like skim-milk.
Lacunae: irregular impressions or cavities: specifically the non-walled cavities of the body.
Lacunose: pitted; the surface covered with small cavities.
Laemodipodiform: like a laemodipod; similar to the larva of a walking stick.
Laevis -igatus: smooth, shining and without elevations: said of a surface.
Lamella: a thin plate or leaf-like process.
Lamellate: antennae with the club formed of closely opposed leaf-like surfaces, the concealed surfaces set with sensory pits.
Lamellicornia: those beetles in which the antennae terminate in a lamellate or leaf-like club.
Lamelliform: made up of or resembling leaves, blades or lamellae.
Lamina subgenitalis: the sub-genital plate; q.v.: in roaches the 7th ventral plate of females and 9th ventral plate of males.
Laminate: formed of thin, flat layers or leaves.
Laminato-carinate: with an elevated ridge or keel, formed of thin plates.
Laminiform: layer-like: having the appearance or made up of lamina.
Lana: wool: the long hair on the abdomen of some Lepidoptera.
Lanate -atus: woolly: covered with dense, fine, long hairs, so distinct that they may be separated.
Lanceolate: lance- or spear-shaped: oblong and tapering to the end.
Lanceolate cell: in Hymenoptera (ort.); - 2d anal (Comst.).
Lancet: indiscriminately applied to any piercing mouth structure.
Lanuginose -us: with long, curled hair dispersed over the surface: see crinitus.