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_ that the number deposited by each moth may be increased. 
__ Trregularity of development, combined with this slow oviposition, 
produces the overlapping of generations noticed in so many insects, 
and which becomes more prominent in insects which have several 
' broods, About the same time full-grown larve, young larve, eggs, 
- and pupee will be found. So great does thisirregularity occasionally 
_ become that moths of the first hrood do not issue until on in Sep- 
tember, and when the apples are picked they often contain larvee ouly 
recently hatched. Such individuais ave retarded, of course, in their 
growth by cold weather, and we have occasionally found larye in eat- 
ing apples as late as the middle of January which were less than half 
be as a 
which had not passed its second molt. It is quite likely that such 
wa 
_ 
earance of their moths will not be greatly retarded beyond those of 
~ larye which spun their cocoons normally in the fall. 
Seldom more than one larva is found ina single apple. When 
‘two are found they will usually be found to be of differing sizes, 
thus indicating that the eggs were laid by different moths. When 
of the same size, however, it has been noticed that originally the 
‘apple hung closely appressed to another, and that. both larve, orig- 
inally intended for different apples, by accident entered the same. 
Dr, 8. F. Chapin, to whose careful examination of over three thou- 
sand infested apples we have referred in our section on remedies (see 
also Report Second Annual State Convention California Fruit-grow- 
“ers, 1882 [1883], page 18), found in this large numberof apples con- 
taining the pest hut twenty-four which contained two larvae each, 
- and one only which contained three larva. in but two apples were 
: ‘two larves foundin the same cavity. The instinct of the moth which 
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' leads it to avoid apples already oviposited in and to deposit but one 
. egg on a single apple is modified in confinement, and also probably 
wherever the moths occur in excess of the food supply. Professor — 
+ Riley. in his manuscript notes, mentions that he placed a single applé 
in a breeding-jar with a number of moths, and that in a few days it 
_ was fairly riddled with young larve, The moth is a night flier and 
' conceals itself by day, and as the oviposition is done by night it is 
- seldomobserved. Unlike most night fliers it is not readily attracted 
’ by light and is seldom captured by poisoned baits, as will be shown 
_ in another section. 
The larve of the second generation are usually found in the later 
_ varieties of apples, and fewer of these fall to the ground in conse- 
~ quence of the insect than is the case with the early varieties. Many 
of the larve reach full growth before late fall and seek the same 
’ places for pupation as didthe early brood. The cocoon of this brood 
’ is thicker than that of the first,as is to be expected, for in it they 
- pass the winter. Often the crop is harvested before many larve 
fone escaped for transformation, but the worms complete their 
Ba 
‘individuals will successfully trausform, and we believe that the ap-- 
BSA yan Ta A oN ees oe ae es we : : os iy 2A t 4% a oS 4 
ies fe saat ty be A A ae LPT ee z ‘ 
_ RYROPT OF THE ENTOMOLOGIST. 91, : 
grown, and one living specimen was brought to us in January 1888, _ 
. 
