ptilinum

== English == === Etymology === Borrowed from New Latin ptilīnum, itself an adaptation of the French ptiline. === Pronunciation === (Received Pronunciation) IPA(key): /ˈ(p)tɪlɪnəm/ (UK) IPA(key): /(p)tɪˈlʌɪnəm/ === Noun === ptilinum (plural ptilina) (zoology, entomology) A bladder-like pouch on the head of schizophoran flies that by expanding enables the fly to emerge from its puparium. 1980, Stuart E. Reynolds, Integration of Behaviour and Physiology in Ecdysis, Michael J. Berridge, J. E. Treherne, Vincent Brian Wigglesworth, Advances in Insect Physiology, Volume 15, page 500, Certainly, the ptilinum, a special eversible sac on the head which is evidently a "hatching" structure, is instrumental in causing the puparium to crack along its line of weakness, a longitudinal line around the anterior end, which meets a circular line extending around the anterior margin of what was the 4th visible segment of the larvae cuticle (Laing, 1935). ==== Translations ==== === Anagrams === multipin