Hypopharynx

noun

1. The tonguelike structure in front of or above the labium in the mouth of an insect.
3. 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.
4. An appendage or fold on the lower side of the pharynx, in certain insects.
5. bottom part of the pharynx, the part of the throat that connects to the esophagus