FOR WAGGONER’S BIOLOGY 
71 
EXERCISE 70 
THE CABBAGE BUTTERFLY 
If desired, the Monarch butterfly may be substituted for the 
cabbage butterfly. Handle the specimens very carefully. (See 
Waggoner, Fig. 195.) 
I. The Adult. Note the position and number of the wings; 
then carefully remove them and place in a book until you are ready 
to use them for further study. Note the parts of the body. Com¬ 
pare the covering of the body with that of the insects previously 
studied. Using a lens, examine the head. What are the number, 
the position, and the character of the eyes? What is the nature 
of the antennae? Compare the antennae with those of a locust. 
What is the nature of the covering of the anterior part of the head? 
Examine the mouth parts. What do these indicate with regard to 
this butterfly’s food habits? How are the mouth parts protected? 
Uncoil the sucking tube. How long is it? How many pairs of 
legs do you find? Examine them. What is their position? What 
does their character suggest regarding their use? Compare them 
with those of a locust. Compare the two pairs of wings as to shape 
and markings. What causes their rigidity? Examine with the 
lens. Then examine a portion of a wing which has been mounted 
under the low power of the microscope. What is the arrangement 
of the scales which cover the wings? Their nature? Examine the 
abdomen. What are its characteristics? 
Draw one of each pair of wings, a small portion of a wing showing 
the scale arrangement, an antenna, and the sucking tube. 
II. The Larva. Examine the larva of the butterfly. What is 
its general nature? Note its color and size. Examine the head, 
noting especially the mouth parts. How do these compare with 
those of the adult? How many legs are present? To what are 
they attached? Are the legs jointed? Note the fleshy 'prolegs 
which are posterior to the true legs. What is their nature? Their 
use? What is the food of this cabbage worm ”? Compare it 
