review topics on insects. 57 



The Dragon Fly. 



9. Where does a dragon fly live? 



10. Where does it lay its eggs? 



11. Describe the larva. 



12. What mouth parts has a dragon fly? 



13. What kind of wings has a dragon fly? 



14. What is the pterostigma? The nodus? 



15. How many segments in the abdomen? 

 16 What does a dragon fly eat? 



The Giant Water Bug. 



17. To what order does a giant water bug belong? 



18. What kind of antennae has it? 



19. Describe the mouth parts. To what is each 



homologous ? 



20. Tell how the wings fasten. 



21. Describe the wings 



22. What peculiarity have the fore legs? 



23. What peculiarity have the hind legs? 



24. What is peculiar about the nerve cord? 



The House Fly. 



25. Describe the antennae. 



26. Describe the eyes. 



27. Describe the mouth parts. Indicate the homol- 



ogies. 



28. Where are the lancets? Of what use are they? 



29. Of what use are the palpi? 



30. Describe the wings. 



31. What are the balancers? The winglets? 



32. Describe the foot. 



33. Where are the eggs laid? 



34. What other insects belong to the same order as 



the house fly? 



35. What is the larva called? 



