Lepidopteric acid: a green pigment obtained from the wing scales of Lepidoptera; a derivative of uric acid: see Lepidotic acid. Lepidopteron: a butterfly or moth: one of the Lepidoptera. Lepidotic: set with minute scales. Lepidotic acid: a yellow pigment obtained from certain butterfly scales a derivative of uric acid: see Lepidopteric acid. Lepis: a scale. Leprous: with loose, irregular scales. Leptiform: = compodeiform; q.v. Leptos: small, fine. Lethargic: torpid or inactive. Leucine: a white crystalline compound, the product of animal decomposition, found in the malpighian tubes: as a color, cheesy white. Leucocytes: pale, unicellular bodies, numerous in the insect blood. Levator: a muscle that raises an organ or a part. Levigate -us: with a smooth, somewhat shiny surface. Liber: free. Ligament: a band or sheet of tough, fibrous tissue between two parts or segments. Ligneous -eus: wood brown [Vandyke brown]. Lignivorous: feeding upon wood or woody tissues. Ligula: the central sclerite of the labium, borne upon the mentum, usually single, sometimes paired: often used as synonymous with "glossa" and "tongue": corresponds to the united laciniae of right and left maxillae: see also elytral ligula. Ligulate: strap-shaped; linear, much longer than broad. Lilacinous: lilac-colored [lilac]. Limaciform: having the form of a Limax or slug; said of larvae. Limb: the circumference: the area surrounding the disc. Limbate: when a disc is surrounded by a margin of different color. Limbus: the area along the outer and posterior margin of wing beyond the closed cells; Homoptera, Cicada. Limpid: clear and transparent: applied to wings and ornamentation. Line: a narrow streak or stripe: as a term of measurement, one-twelfth of an inch; commonly used by English and early American authors. Linea: a line or narrow stripe. Linear: straight; in the form of a right line. Lineate: marked with lines or streaks: lined. Lineolet: a delicate fine line. Lingua: the tongue; applied in Hymenoptera, to the ligula: in Lepidoptera and Diptera, to maxillary structures: has also been used for the hypopharynx, and that use might be adopted: a median organ of the hypopharynx in Apterygota. Lingua spiralis: the spiral tongue of Lepidoptera: see glossa. Linguiform: tongue-shaped: linear, with the extremities obtusely rounded. Lingula: in Aleurodidae, a more or less slender tongue or strap-shaped organ, attached cephalad within the vasiform orifice: a term proposed by Leuckart for the ligula of the bees. Lipochromus: without color. Lipoptera: = Mallophaga; q.v. Literate: ornamented with characters like letters. Littoral: living along the sea-coast or in the shore debris: strictly, between tide marks. Littoralia: Heteroptera that live in marshes. Litura: an indistinct spot, paler at its margin. Livid: yellowish gray with a violet tinge: greenish gray. Lobate -us: divided by deep, undulating and successive incisions.