Insecta. 



53 



in fertilizing flowers is unknown to many, but is essential 

 to man in certain crops ; (7) they serve as scavengers (flies, 

 beetles, maggots, etc.); (8) many kinds are very useful in 

 killing injurious insects, as ichneumon flies that destroy 

 borers, ladybugs that eat scale insects, etc. 



On the whole it would be difficult for a jury to say 

 whether insects do more harm than good ; and it is per- 

 haps best to regard them as having their place in the 

 world to fill. And yet we must not submit tamely to their 

 ravages, for we may outwit the robbers and turn other 

 robbers against them. We should make it a study to turn 

 insects, as well as other groups of animals, to the best 

 account, and thus make the lower forms of animal life 

 serve man, who is deservedly at the head of creation so 

 long as he shows his fitness to rule. 



ORDERS OF INSECTS. 



Thysanura Springtails. Neuroptera Ant Lions. 



Odonata Dragon Flies. Lepidoptera Butterflies. 



Orthoptera Locusts. Diptera Flies. 



Hemiptera Bugs . Coleoptera Beetles. 



Hymenoptera Bees. 



