Social Life In The Insect World

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  ...There is the adult insect, freed of its mask, and how different from what it was but how! The wings are heavy, moist, transparent, with nervures of a tender green. The thorax is barely clouded with brown. All the rest of the body is a pale green, whitish in places. Heat and a prolonged air-bath are necessary to harden and colour the fragile creature. Some two hours pass without any perceptible change. Hanging to its deserted shell by the two fore limbs, the Cigale sways to the least breath of air, still feeble and still green. Finally, the brown colour appears and rapidly covers the whole body; the change of colour is completed in half an hour. Fastening upon its chosen twig at nine o'clock in the morning, the Cigale flies away under my eyes at half-past twelve.
  The empty shell remains, intact except for the fissure in the back; clasping the twig so firmly that the winds of autumn do not always succeed in detaching it. For some months yet and even during the winter you will often find these forsaken skins hanging from the twigs in the precise attitude assumed by the larva at the moment of metamorphosis. They are of a horny texture, not unlike dry parchment, and do not readily decay...