Butterfly Hyles Totenkopf - the only insect body has speech

Today there are about one million species of insects. Of these, about 10,000 are able to produce different sounds. However, insects do not have the vocal apparatus, and the sound is produced by friction of one part of the body to another. Only the hawk moth Death's Head has a special organ of the "speech", located in the throat. This butterfly being disturbed, unlike other insects are not silent, and squeaks. The sound emitted by it is formed by the air intake into the esophagus - begins to vibrate a thin film of chitin, located on the inner surface of the upper lip of a butterfly. Sometimes the sound produced is so loud that resembles a scream. This butterfly - inhabitant of the southern landscape, because of its unusual appearance does not enjoy the sympathy of the majority of people, and its "Scream" by many regarded as a bad omen.

via factroom.ru