HARMFUL INSECTS 131 
At the end of about seven or eight days the egg develops 
into a small larva which immediately begins to bore into 
the apple, entering the fruit at the crown. It soon eats its 
way to the core, where it it lives for a fortnight or three 
weeks feeding on the pips and central part of the fruit ; at 
the end of this time it emerges by eating its way out—an 
aperture larger than the one by which it entered being now 
necessary. 
The larva should be examined and its colour, which 
changes from grey to flesh colour, noted. It is composed 
of segments, has three pairs of claw feet on the first three 
segments, four pairs of sucker feet in the middle of the 
body, and one pair on the last segment. 
If the apple be on the ground when the larva emerges, it 
crawls to the nearest tree, finds its way up the trunk, enters 
a crevice in the bark, sur- 
rounds itself with a silken 
case and enters on the 
pupa stage. If, on the 
other hand, the apple has 
not fallen, the larva may 
lower itself to the ground 
D by means of a silken 
thread, and then crawl to 
Fig. 89. ’ 
A, Apple, cut to show injury by Cod- the trunk—or it may find 
lin Moth. : 
(a), Hole by which larva enters apple. 1ts way back along the 
(b), Hole by which larva escapes from apple. 
(c), Portion of inside destroyed by larva. branches and down the 
B, The Codlin Moth flying (enlarged). 
CO, Larva of Moth. stem. The larva does not 
D, The pupa stage. 
always pass the pupa 
period in the bark of the apple tree — it frequently finds a 
resting place amongst dry twigs and leaves, in old fences, 
in crevices, in the floors of rooms where the fruit is stored, 
and in other suitable spots. 
