188 



Bulletin 176. 



tliroiigh the pupa skin, which spHts down the center of the back for 

 a short distance. After carefully drawing out its wings, legs, 

 antennae, and tongue from their pupal sheaths, it may crawl a short 

 distance, where it rests for from twenty minutes to half an hour to 

 let its wings expand and dry. It is then ready for active flight. 



All records agree that the moths of the peach-tree borer emerge 

 in the day-time, usually early in the day about 8 a. m., and they are 

 also most active during the day, doubtless flying but little, if any, at 

 night. Most moths in other families emerge and fly mostly at night. 

 One familiar with the moths of the peach-tree borer can usually 

 find them flitting about from tree to tree in a peach orchard during 

 the month of June or July. Those we have seen were rather easily 

 disturbed and always flew rapidly and close to the ground, usually to 

 the base of another tree not far distant. They visit flowers, Fyles 

 (1898) having captured one on the blossoms of Spirea salicifoUa in 

 Canada. Unlike most moths, they are not attracted to lights. 



The dates of emergence of the moths vary much in different parts of 

 the country, and somewhat in different years. As all sizes of the borers 

 occur in the trees in the spring, and as all of these get their full growth 

 before fall, it naturally follows that the resulting moths must continue 

 to emerge over quite a long period, or from two to four months. 



The records from our breeding-cage experiments and other 

 observations at Ithaca, K. Y., are given in the following table : 



