I'M) 



BRANCH ARTHROPODA 



The four finely netted membranous wings of the adult dragon- 

 fly are long, narrow, strong, and nearly equal. If unequal, the 

 posterior wings are the larger. Each wing has a joint-like struc- 

 ture near the midtUe of the front margin. Their mouth parts 



Fig. 100 —Dragon-flics 



111 till liival, pupal, and imago state. 

 (VfUr Tcnnt-y ) 



are adapted for biting. Their compound eyes are very large 

 and th(> antennae short. The metamorphosis is incomplete. 

 The eggs are laid in water or attached to aquatic plants. 

 They soon hatch, and the larva (Fig. 100), called nymphs, 

 live a predatory existence. They lie in wait for their prey. 



