DIPTERA 



As their name implies, the Diptera possess only two Avings. 

 These, again, cannot be folded, and the place of the lower pair 

 is taken by two little winglets or balancers. The mouth is 

 formed for suction. Without going further into technical de- 

 tail, we will proceed to a short description of the insects which 

 have been selected as examples. 



I 1 4s1 -Tiiuli iniciat 

 (\ellow and black. y 



Everyone is familiar with the group of flies called Tipulidaj, 

 the various insects known by the popular title of " Daddy Long- 



