* INSECTS INFESTING THE APPLE TREE. 107 



fruit-growers that they have seen the codlin moth tlying in 

 large numbers. In my investigations I have not seen more 

 than two at any one time. The moth will live in a glass vial 

 seven days. The female moths deposit their eggs within 

 forty-eight hours — these are deposited at night. The egg 

 cannot be seen plainly by the unaided eye. 



The best time to see the moths at work is at the dawn of 

 day in the months of June and July. Part of the early fruit 

 falls prematurely when attacked by the larvto ; but little of 

 the late fruit falls until the larvoe escape. 



The theory that the moth always deposits the egg on the 

 fruit blossom, and that it remains there until the fruit has 

 grown to natural size, is a mistake. 



HOW TO PROCURE SPECIMENS OF THE MOTH. 



When you find the larva, if it is on the loose bark, remove 

 the piece of bark or wood to which it is attached, place it 

 in a small vial, and if in the Summer time, inside of ten 

 days you will have a genuine specimen of the moth (/ and g, 

 Fig. 79). Fruit-growers can get important information con- 

 cerning the natural history and habits of the insect pests by 

 experiments of this kind. Every fruit-grower should unite in 

 the crusade against this pest. " In union there is strength." 



Since writing the above, or on August 8, 1883, I bought a 

 box of bellflower apples which was offered for sale in market. 

 With few exceptions each apple contained two larvae of the 

 codlin moth, and in nearly every apple infested by the later 

 broods the egg had been deposited near the stem. This is the 

 first instance that furnished me actual proof that the later 

 broods would deposit their eggs in fruit that had been infested by 

 the earlier broods of the season. In the absence of the seeds of 

 the apple, eaten by the larva of the earlier broods, the larva of 

 the later brood seemed to burrow (or honeycomb) the pericarp 

 in all directions. The larvffi in the apples containing more 

 than one specimen were apparently of different ages. 



From investigation it is probable that there are more than 

 one species of codlin moth infesting fruit in this State ; but I 

 am not prepared to report at present writing. 



