Sclerotin

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Sclerotin is a mixture of protein substances that forms the cuticles of insects. It provides physical toughness to the insect's chitinous exoskeleton.[1] As it forms, sclerotin becomes a hard, horn-like substance with a range of yellow-brown colors. In combination with keratin, this substance allowed insects to evolve for existence on the land and to develop wings.[2]

[edit] References

  1. ^ Klots, Alexander B.; Klots Elise B. (1977). 1001 Questions Answered About Insects. Courier Dover Publications, p. 29. ISBN 0486234703. 
  2. ^ Wigglesworth, Vincent Brian (1984). Insect Physiology. Springer. ISBN 0412264609. 
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