A long, median, fusiform muscle lying against posterior wall of pharynx, arising by slender tendon on median process of tentorial bridge, inserted ventrally on inner edge of oral plate. (Posterior dilator of the anterior pharynx Duncan.)
written by: Snodgrass, R. E. 1942. The skeleto-muscular mechanisms of the honey bee. Smithsonian Miscellaneous Collections 103:1-120.