IN SECT ORDERS 263 



2. Name ten insects that are of economic value and tell how they are of value 

 to man. 



3. Name ten insects that are economically harmful and tell how they do harm 

 to man. 



4. What is unusual about the mouth parts of the May flies. 



5. What special adaptation do the termites have to allow them to derive their 

 nourishment from wood? 



6. Where do the click beetles get their name ? 



7. Why does the aphis lion female lay her eggs on separate stalks ? 



8. Distinguish between the moths and butterflies. 



9. Trace the life cycle of the horse botfly. 



10. Describe symbiosis as illustrated by the ants and aphids. 



11. Tell how the true wasps make their nests. 



12. What are naiads and where do they live? 



13. What is the economic importance of the Hessian fly? 



14. Why are house flies economically harmful to man ? 



15. How do the digger wasps feed their young? 



16. Why are bumblebees better pollinators of red clover than honeybees? 



17. Name three genera of mosquitoes and tell what disease may be spread by 

 each. 



18. What are the meanings of the following order names : Orthoptera, Isoptera, 

 Coleoptera, Mallophaga, Hemiptera, Neuroptera, Lepidoptera, Diptera, and Hymenop- 

 tera? 



19. In what stage of the life cycle is the clothes moth destructive ? 



20. Name as many kinds of insects as you can that are eaten by human beings. 



21. After reading the last two chapters, do you think that insects are primarily 

 beneficial or harmful ? Give reasons for your answer. 



