CHAPTER XXII 



CLASSIFICATION OF INSECTS 



SECTION XXI. CLASSIFICATION OF THE ORDERS OF INSECTS 



Material. One of two methods may be employed for this work : (a) Each 

 student should be required to make a collection of insects containing repre- 

 sentatives of at least eight of the principal orders, (b) Provide each student 

 with a representative collection of twenty-five insects. These should be num- 

 bered from one to twenty-five, and should contain as nearly representative 

 forms as possible. 



Exercise 59. On a sheet of paper place the numbers one to twenty-five. 

 After each number write the order (to be determined by the key) to which the 

 corresponding insect belongs. 



SECTION XXII. CLASSIFICATION OF FAMILIES 



Material. Give each student a collection representing as nearly as possible 

 the different families of insects treated in the key. It will be found convenient 

 to place twenty-five insects on a block, each block containing only the insects 

 of one order, thus obviating the necessity of classifying every insect to its 

 order before placing it in the family. The insects should be distributed as 

 follows : One block containing representatives of the lower orders (Neuroptera 

 and Neuropteroid insects) ; one block of Hemiptera ; two of Coleoptera ; two 

 of Lepidoptera ; one of Hymenoptera ; and one of Diptera. 



Exercise 60. Classification of the families of the lower orders. 



On a sheet of paper place the numbers one to twenty-five. After each 

 number write the family (to be determined by the key) to which the corre- 

 sponding insect belongs. If possible, by referring to the text or by compari- 

 son with a named collection, identify common forms to genus and species. 



Exercise 61. Classification of the families of Hemiptera. 



Exercise 62. Classification of the families of Coleoptera. 



Exercise 63. Classification of the families of Coleoptera. 



Exercise 64. Classification of the families of Lepidoptera. 



Exercise 65. Classification of the families of Lepidoptera. 



Exercise 66. Classification of the families of Hymenoptera. 



Exercise 67. Classification of the families of Diptera. 



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