Teacher's Leaflet. 



1 175 



(2). What is the color of the 

 caterpillar's body? Its head? 



(3). How many sections are 

 there to the body? How many of 

 these bear legs? What is the dif- 

 ference in form between the three 

 front pairs of legs and the others ? 



(4). Look at a wormy apple. 

 How can you tell it is wormy 

 from the outside? Can you see 

 where the worm entered the apple ? 

 Was the burrow large or small at 

 first? Can you find an apple with 

 a worm in it which has the door 

 for exit made, but closed with 

 waste matter? How is this mat- 

 ter fastened together? If the Larva of Codling Moth, enlarged. 



apple has no worm in it, can you see where it left the apple? Make 

 a sketch or describe the evidence of the caterpillar's progress through 

 the apple. Do you find a web of silk in the wormy part? Why is 

 this? Does the worm eat the seeds as well as the pulp of the apple? 



(5). Take a dozen rotting apples. How many of them are wormy? 

 Do the parts of the apple injured by the worm begin to rot first? In 

 how many ways does the codling moth injure the apple ? Does it injure 

 other fruits than apples ? 



(6). How late in the fall do you find the codling larvae in the apple? 

 Where do these larvae go when they leave the apple? 



Work to be done in March or early April. — Visit an orchard and look 

 under the loose bark on old trees, or along protected sections of fences 

 or brush piles and bring in all the cocoons you can find. Do not injure 

 the cocoons by tearing them from the place where they are woven but 

 bring them on bits of the bark or other material to which they are 

 attached. 



(i). How does the cocoon look outside and inside? What is in the 

 cocoon? Why was the cocoon made? When was it made? 



(2). Place the cocoon in a box covered with cheese-cloth and place 

 the box out-of-doors where the contents can be frequently observed 

 and make the following notes : 



(3). When does the larva change to the pupa? 



(4). Describe the pupa. \ 



