Bulletin 35 Hay. 1896 



NEW HAMPSHIRE COLLEGE 



AGEICULTUEAL EXPERIMENT STATION 



THE CODLING MOTH AND THE APPLE MAGGOT 



BY CLARENCE M. WEED 



The two most destructive insects affecting the fruit of the 

 apple in New Hampshire are the Codling Moth or Apple 

 Worm and the Apple Maggot or Railroad Worm. These 

 pests greatly lessen the value of the apple crop in the state, 

 and are among the most important enemies of our agriculture. 

 The first named insect — the Codling Moth — has apparently 

 been about as injurious as at present during the last twenty 

 years, but the last named — the vexatious Railroad Worm — 

 is undoubtedly increasing in destructiveness from year to year. 



THE CODLING MOTH 



Carpocapsa pomonella 



For more than a century the Codling Moth has preyed upon 

 the fruit of American orchards, into which it was introduced 

 from Europe early in our history. Its life-history, briefly sum- 

 marized, is this : The parent insect is a small, chocolate brown 

 moth (Fig. i,^), scarcely half an inch long, which appears 

 among the trees in spring about the time the apples are form- 

 ing from the blossom. Here in the cavity at the upper end of 

 the upright fruit the female moth deposits an q^^. In a short 

 time this egg hatches into a small, whitish worm, which nibbles 

 at the skin of the young fruit, finally biting through and eating 

 its way to the core. Here it continues feeding as the apple 



