Cymbalisation

Stages of the fledging	The old cuticle splits under the pressure exerted by the growth of the cicada	Cicada emerging from its old cuticle (exuviae) and spreading its wings	Cicada spreading its wings
Exuviae of a cicada (empty shell after moulting)	Exuviae of a cicada

1st stage of moulting - the grasshopper out of its shell (1100)

2nd stage of moulting - the cicada came out and spread her wings (11:20)

3rd stage of moulting - the grasshopper is out (green) (13:00)

4th stage of moulting - the grasshopper is out (gray) (14.30)

The cymbalisation or "cicadas"

Cymbalisation produced in males and for attracting females. When the temperature is sufficiently high (about 25 C), the male "singing", or more accurately, it cymbalise. A common mistake is that the crickets chirping as the locusts. But the stridor is produced by rubbing two body parts of an insect (or more generally an arthropod, because tarantulas chirping as example), while the male cicada has a special vocal organ, cymbals, which is located in his abdomen.
Cymbalisation The result of the deformation of a membrane (like the lid of a can) driven by a muscle. The sound is amplified in a resonance chamber and evacuated through vents. The frequency and modulation cymbalisation characterize the different varieties of cicadas. The purpose of this cymbalisation attract females of the same species.

Generally, we differentiate the species by their morphological characteristics. In some cicadas, entomologists find none. The song is thus a major criterion for differentiation. The male cicada vibrates his cymbals, the organ that emits sounds to attract females which is sensitive only song of its kind. Low grades, acute and sometimes at the limit of perception. Specialists are able to distinguish two species of cicadas simply by ear. The most difficult is to record and collect people at the same time. This is the only way to be sure that the sound comes right from the cicada that is gathered.

Magicicada in Appalachia

In 13 eastern states of the United States , including Tennessee , cicadas Magicicada septendecim, Magicicada cassini and Magicicada septendecula have cycles of 13 or 17 years of breeding. From mid-May, when the temperature reaches about 17 C, the larvae emerge, usually at night, under cover of a little rain softens the earth. Females lay about 800 eggs each, in small slits they bore into the bark of branches using the ovipositor at the tip of their abdomen, only damage caused by the cicada eggs hatch After about four weeks. The larvae then let fall to the ground they dig their claws before burrowing. A novel mechanism of abdominal gutters even allow them to use their urine to soften the earth.

CHINA IN SYMBOLIC was placed in the mouths of dead cicada jade, a symbol of eternal life and resurrection in the hereafter

Genres

Europe

The family Cicadidae is divided into 2 subfamilies:

Cicadinae

• Cicada
  • Cicada barbara (Stl 1866)
    • Cicada barbara lusitanica Boulard 1982
  • Cicada mordoganensis Boulard 1979
  • Cicada orni Linnaeus 1758. The grasshopper gray Orne. Listen to the song Australia

    Cicadinae

    • Psaltoda (Stl)
      • Psaltoda harrisii (Leach, 1814)
      • Psaltoda Moerens (Germar)
      • Psaltoda plaga (Walker)

    The cicada Humanities and Literature

    In France , it is commonly associated with the folklore of Provence and the Mediterranean countries (though some species back up to Alsace and Paris Basin ).

    Insect summer in style (at least in temperate countries), the cicada has evoked the carefree since the ancient times , and the fabulist Aesop made the heroine of one of his fables , La Cigale and the Ant.

    Jean de La Fontaine said this fable in his collection two millennia later: The Grasshopper and the Ant is so well known and studied it became a symbol of the genre.

    In 1981 , this tale has been parodied by the duo comedy Peep and Rik.

    Photo Gallery

    Emergence, Canada (June 7, 2007)	Dorsal view	Front View	Exuviae of Lyristis plebejus (Scopoli 1763), Var (France)
    Diemeniana Frenchi, Australian species.

    See also

    • Exuviae.
    • Cicada heatwave

    References

    • Reference Fauna Europaea : Cicadidae (fr)
    • Reference ITIS : Cicadidae (en) ( + version (en))
    • Reference Animal Diversity Web : Cicadidae (fr)
    • Reference NCBI : Cicadidae (fr)
    1. ^{a and b} PMS: Staff and Departments - Bioacoustics: Asian Cicadas

    External Links

    • The singing of Cicadas in Europe
    • The cicadas in the world
    • The cicada emerges from the ground and spreads its wings, three hours of observation lead to photos in macro mode
    • An interactive survey on cicadas de France
    • The lives of cicadas on NotreProvence.fr
    • (En) The cicada is also a source of inspiration in the folk song of the county of Nice: La Cigala.
    • The cicada in any detail
    • Portal entomology

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