• (n.) A structure which overlaps the mouth of certain insects.
(from the article `insect`) ...In the primitive bloodsucking flies (e.g., the horsefly Tabanus) the mandibles and maxillae form serrated blades that cut through the skin and ...
A component of many insect mouth-parts which is attached to the posterior surface of the labrum or clypeus
Ep`i·phar'ynx noun [ Epi- + pharynx .] (Zoology) A structure which overlaps the mouth of certain insects. 
Type: Term Pronunciation: ep′i-far′ingks Synonyms: nasopharynx