222 



THE RISE OF ANIMAL LIFE 



forewinq 

 hind-NNinq 



femur 



fibio 



tarsus 



Fig. 11-18. External ventral view of the grasshopper. 



spread of 9 inches. Insects as large as cats us study in some detail two representatives 

 and dogs would increase man's problems the grasshopper and honeybee, 

 considerably 



Entomologists (specialists on insects) 

 have grouped this vast array of insects into 

 about 26 different orders, the more impor- 

 tant of which are shown in Fig. 11-17. Let 



The grasshopper 



A study of this representative insect will 

 throw some light on the reasons why the 

 insects have reached the pinnacle of the 



