218 



THE INSECTS— ARTHROPODS 



The eggs are laid in the water and hatch into naiads that somewhat 

 roughly resemble the adult, but have a very long pair of jaws which they 



Thus, the method of feeding 





use to catch small water animals for food. 





Photos by Winchester 



Fig. 15.8. Incomplete metamorphosis. The naiad of the dragonfly undergoes a series 



of molts as it increases its size and becomes more like the adult. However, it lives 



in the water and feeds in an entirely different manner. The lower photographs show 



the mouth parts of the naiad and the adult to emphasize this distinction. 



