ORCHARD, GARDEN, AND FIELD INSECTS 139 



EXERCISE 



How many apples per hundred do you find injured by the codling 

 moth ? Collect some cocoons from a pear or apple tree in winter, place 

 in a breeding cage, and watch for the moths that come out. Do you 

 ever see the woodpecker hunting for these same cocoons ? Can you find 



FIG. 132. PEACH-TREE BORERS, MALE AND FEMALE 



Female with broad yellow band across abdomen. (From Hodge's 

 " Nature Study and Life," Ginn & Company.) 



cocoons that have been emptied by this bird ? Estimate how many 

 he considers a day's ration. How many apples does he thus save ? 



Watch the curculio lay her eggs in the plums, peaches, or cherries. 

 What per cent of fruit is thus injured ? Estimate the damage. 



Let the school offer a prize for the greatest number of tent cater- 

 pillar eggs. Watch all trees, such as apple, wild and cultivated 

 cherry, oak, and many others. 



