214 P3 *- 9 Aj C iy> » t /O < r> i. to 'fe /A di I : st ^ X 



Places zv/iere the eg^s are laid — Having never seen the egg, the early writers 

 aiui horticulturists were forced to guess as to where it was laid. They stated that 

 the eggs were laid on the fruit. These views were held because of the presence 

 of the entrance holes of the larvae on the fruit. 



The writer has found that in my orchard the most of the eggs arc laid upon 

 the )oung fruit. In one cage a moth laid 25 eggs,%any of which were upon the 

 fruits, and in another cage 29 eggs were laid and only four were upon the leaves. 

 A very few eggs were observed to have been laid upon the leaves in the field. 



The average of several rough countings in the field ga\c an average of about 

 85 percent laid upon the fruits. Breeding records show that out of 54 eggs in 

 cages, there are 48 eggs upon the young fruits, 6 upon the leaves. A very few 

 eggs are laid upon the underside of the leaves. 



We may therefore conclude that the eggs are for the most part laid upon the 

 fruits, while a very few of them may be found upon the leaves. 



When the eg§s are laid — S. Fujii, Nögakiislii stated that the eggs were laid 

 at night. The writer's observations show that the oviposition for the most part 

 is accomplished in the late evening, while a single observation shows an egg to 

 have been laid in the late afternoon. 



The niiinber of eggs laid by one female — In only two instances has the writer 

 made a definite observation on the number of eggs laid by a single female moth. 

 Two pairs of the moth were captured in copula, and each was placed in separate 

 cages. In one cage, 25 eggs were found, and in the other, 29 tggs were laid. 

 The average number of eggs laid by one female moth is 27. 



The egg-laying period — Upon dissection of the ovaries of the female moth the 

 eggs are found in various stages of development. It is also noted that the eggs 

 are laid when they are in different stages of maturity. From these facts we may 

 conclude that the egg-laying period extends over some time. The length of the 

 time from the emergence of the moth to the beginning of the laying of the eggs 

 varies from 2 to 4 days, with an average of about 3 days. 



Hatching of the egg — The egg is hatched in six to seven days in my laboratory 

 at an oridinary room temperature, and in the orchard one day longer. The writer 

 has observed that as soon as the light yellowish tinge of the egg had turned ta 

 white, the larva came out of the e<rg near the one end through an irregular crack 



