What's the difference between glabellum and labellum?
Glabellum
Definition:
(n.) The median, convex lobe of the head of a trilobite. See Trilobite.
Example Sentences:
(1) The most frequent site was the nape, followed by the glabellum, eyelids, nose, and upper lip.
Labellum
Definition:
(n.) The lower or apparently anterior petal of an orchidaceous flower, often of a very curious shape.
(n.) A small appendage beneath the upper lip or labrum of certain insects.
Example Sentences:
(1) On each side of the labellum there are 11 "largest" hairs (LH).
(2) Electrophysiological recordings showed that gustatory chemosensilla were located on the labellum, tip of labrum, labral food canal, foretarsi, tibia, and antennae.
(3) Taste hairs are located on the labellum and tarsi of blowflies.
(4) Some lines also show expression associated with other chemosensory organs at either the larval or adult stage, including the maxillary palps, labellum, and anterior wing margin.
(5) The neurons associated with the anteriormost (LH-1), posteriormost (LH-11), and one lateral (LH-6) hair on the labellum were stained selectively with cobaltous sulfide.
(6) Mature larvae protrude their anterior ends from the tip of the labellum.