INSECT METAMORPHOSIS 



however, began at an earlier period, and the apparently 

 new creature was partially or almost entirely formed 

 within the old skin before the latter was finally shed. 



Fig. 135. Various habitats of plant-feeding caterpillars 



A, a caterpillar feeding in the open on a leaf. B, leaf miners in an apple leaf, 



the trumpet miner at a, the serpentine miner at b. C, the corn borer feeding 



within a corn stalk. D, the apple worm, or larva of the codling moth, feeding 



at the core of an apple 



After the molt, only a tew last alterations in structure and 

 some final adjustments are made while the wings and legs 

 ot the creature that had been confined in the closely fitting 

 skin expand to their full length. The structural changes 

 accomplished after the molt, however, vary with different 



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