68 



State Horticultural Society. 



why during the tgg laying season they do not make as many purely 

 feeding punctures as they do earHer and later in the season. In making 

 an egg puncture the female first eats a small hole through the skin, and 

 then eats the pulp back about one-sixteenth of an inch, thus making a 

 small cylindrical hole, usually quite parallel to the skin. She then turns 

 around and deposits an egg in this hole. Having accomplished this, she 

 then eats the tissue by cutting a small crescent shaped hole through the 

 skin and into the pulp so as to partly surround and partly undermine the 

 egg. Such a puncture is shown in Fig, 2, b and d, which is a photo- 

 graph of portions of the apple cut away and magnified two and one- 

 half diameters. 



As most of these egg punctures or "stings" are made during the 

 rapidly growing season of the apple, if the eggs fail to hatch or the larva 

 die early in their life, then the apple may outgrow the "stings," provided 

 fungoid and other diseases do not attack it at this point. Such a "sting" 

 from which the apple has partially recovered is shown in Fig. 2 e, and 

 also at /, where the three smaller punctures are healing over. The large 

 central one, however, will not heal because a fungoid disease has entered 

 and the apple is starting to decay at that point. 



Fig. 3. 



