from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. bottom part of the pharynx, the part of the throat that connects to the esophagus
from the GNU version of the Collaborative International Dictionary of English
- n. An appendage or fold on the lower side of the pharynx, in certain insects.
from The Century Dictionary and Cyclopedia
- n. In entomology, a fleshy organ, generally strengthened with chitinous sclerites, projecting from the floor of the mouth at the opening of the pharynx or gullet.
Hypopharyngeal sclerites: in bees, a pair of strap-like pieces along the hypopharynx to the mentum: see also epipharyngeal sclerites.
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.
Palate: = hypopharynx; q.v. Paleace: chaff or chaffy: = paleaceous.
Metastoma: in Orthoptera: = hypopharynx: q.v. Metatarsus: applied to basal joint of tarsus, where that differs greatly in length or otherwise from the other joints: see sarothrum.
Phallus: = penis: q.v. Pharyngeal pump: = sucking pump; q.v. Pharynx: the back part of the mouth and upper part of the throat: a slight enlargement at the beginning of the oesophagus: in Diptera is sometimes restricted to the space between the hypopharynx and sub-clypeal pump, and is then = sub-clypeal tube.
Endolabium: the inner or mouth surface of the labium: the hypopharynx when that is well developed.
The hypopharynx is united to the labium, the mandibles are wanting and the maxillæ are very much reduced so that the insect is unable to pierce the tough skin of animals.
There are two sets of these, each having three lobes with a common duct which joins the duct from the other set a short distance before they enter the base of the hypopharynx.
Just below this is the hypopharynx, the lateral margins of which are very thin.
As soon as the wound is made the insect pours out through the tube of the hypopharynx some of the secretion from the salivary glands and then begins to suck up the blood through the hollow labrum into the pharynx and on into the stomach.
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