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Insect Morphology and SystematicsInsect Morphology and SystematicsRupturing of old cuticle:
Insect increases its body volume through intake of air or water which
enhances the blood flow to head and thorax. There by the old cuticle ruptures along prede-
termined line of weakness known as
ecdysial line
ii.
Removal of old cuticle:
Peristaltic movement of body and lubricant action of moulting fluid
helps in the removal of old cuticle. During each moulting the cuticular coverings discarded are the
cuticular of legs, internal linings of foregut and hindgut and trachea.
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