A lip, or liplike organ. The lip of an organ pipe. The organ of
insects which covers the mouth beneath, and serves as an under
lip. It consists of the second pair of maxillæ, usually closely
united in the middle line, but bearing a pair of palpi in most
insects. It often consists of a thin anterior part (ligula or
palpiger) and a firmer posterior plate (mentum). Latin = lip
(plural labia), adjective - labial. Lips; the labia majora and
labia minora are components of the female external genitalia.
the bottom-most part of the mouthparts upon which the
caterpillar silk gland is located. Flat, non-segmented, bilobed
structure situated posterior to the mandibles. (Holdich and
Jones, 1983). The lateral edges are often produced, sometimes
acutely, and sometimes bear a cusp associated with the salivary
duct (Barnard and Karaman, 1991). The posterior, medial
appendage of the mouthparts between and behind the maxillae,
composed of the submentum, mentum, prementum, glossa,
paraglossa, and labial palpi. in chewing insect