72 
LABORATORY EXERCISES 
with the adult in respect to food habits. Draw a side view of 
the larva. 
III. The Pupa. Compare the pupa in shape and size with the 
adult. What is the nature of the body covering? Do you find tiny 
holes in some specimens? Probably these are the work of minute 
parasitic insects. (See Waggoner, Fig. 197.) Draw the pupa. 
IV. What characteristics of butterflies have you observed which 
adapt them to their environment? 
EXERCISE 71 (Supplementary) 
THE HONEYBEE 
I. The Adult. Examine one of the workers.’’ What is its 
size? Its general form? What are its body parts? Note its color, 
its markings, and its body covering. Examine its head under a 
lens. What are the shape, size, and location of the compound eyes? 
What are the nature and location of the antennse? Describe the 
mouth parts. Draw a face ” view of the head. Study the 
thorax. What are the number and nature of the wings? Compare 
them with regard to size and shape. Draw one of each. Study 
the legs, noting their number, size, and covering. How are they 
adapted for the work done by the honeybee? What are the shape 
and structure of the abdomen? Find the ‘‘ sting.” What are its 
location and use? 
II. The Stages of Development. If practicable, study the lar¬ 
val and pupal stages of the honeybee. Compare each with the 
adult in regard to the head, mouth parts, legs, and body covering. 
Where are these immature stages of the bee to be found? 
EXERCISE 72 
THE HOUSE FLY 
Some other fly may be substituted for the house fly if desired. 
If this is done, the house fly should be used for comparative pur¬ 
poses. 
