41 
scales are sometimes of a slate color, which under certain lights ren- 
ders the spot inconspicuous. There is a great difference between 
the genital organs of the two sexes, as the ovipositor of the female can 
be said to be hoof-shaped, and ends, roughly speaking, in a point; 
while the presence of the claspers on the male can be said to cause the 
abdomen to end in a line. 
HABITS OF THE MOTH. 
It is general h^ stated by writers that th(^ adults of the codling moth 
are but rareh' seen in orchards. In cases where the infestation is not 
ver}' bad this is usually the case; but where the infestation is bad it 
is a ver}' common thing to see the moths in the orchard, but never in 
any large numbers. They spend most of their time resting on the upper 
surface of the leaves or on the trunks of the trees, where the}' are 
hidden b}- their resemblance to the grayish l)ark. AVhen disturbed, 
the}' fly awa}' so quickly that the e3'e is unable to follow them in their 
erratic flight. According to many observers the codling moth feeds 
on the juice of ripe apples. The w' riter has often observed them drink- 
ing water in cages. 
As the conclusion of man}- investigations 1)}^ many persons and under 
various conditions, it has been deflniteh' deterndned that the insect is 
not attracted to lights. A very few records of captures of codling 
moths at lights, usually of the accidental catching of one or two 
specimens, have been published. 
DURATION OF THE LIFE OF THE MOTH. 
LeBaron gives 1 week as the average length of the life of the adult 
codling moth, Washburn gives from 10 to 15 days, and Slingerland 
says that one moth lived in his cages for IT days. Kecords of the 
writer in August, 11)0*^, of forty -seven moths, show that two moths 
lived 1 da}^; ten, 2 days; eleven, 3 days; ten, -1 days; two, 5 days; seven. 
6 da3^s; one, 7 days; two, S da3'S, and two, !> days; giving a Aveighted 
average of 1 da3\s. 
The length of the adidt stage depends upon the conditions under 
which the moths are kept, as they will live longer if there is water 
which they can drink. The average of 1 days was obtained when 
there was no water accessible to the moths; but had there been water 
or ripe fruit, the average would probably have been longer. 
GENERATIONS OF THE INSECT. 
The question of the num])er of generations of the codling moth in 
one season has for many years been in doubt. In recent years ento- 
mologists have been stimulated to greater etlorts and have in a measure 
solved the problem. The economic inq)ortance of this (piestion is 
very apparent, as the second generation of the insect inflicts about ten 
