CODLIN MOTH. 3 
crawls to a neighbouring tree, and when it has found a convenient 
crevice in the bark, it enlarges this so as to form a small chamber, 
where it spins a white cocoon or web over itself, and turns to the 
chrysalis state, from which, in ordinary course, the moth comes out at 
the time of the flowering in the following spring. Just possibly 
it may come out in about a fortnight; but as a general thing it is 
considered that in this country the moth is only single-brooded. 
Sometimes, instead of falling with the Apple, the caterpillar leaves 
the fruit, and lets itself down by a thread, or sometimes it creeps from 
the fruit along the branches to the trunk; but in whatever way it 
may leave the Apple, in ordinary circumstances it creeps to the trunk, 
and spins its shelter as above mentioned.* 
The Codlin Moth (see figure, natural size and magnified, p. 1) is 
about three-quarters of an inch across in spread of the front wings. 
These are light grey, with many fine streaks and broader marks of a 
dark tint, and at the hinder corner is a large spot of reddish or gold 
colour, with paler markings on it, and a border of gold colour. The 
hinder wings are blackish. — 
The caterpillar (see figure, p. 1) is from about half-an-inch to three- 
quarters of an inch in length when full grown; whitish when young, 
later on more or less of a pinkish colour. The head, when young, is 
dark, later on lighter in colour; and the shield on the segment next 
the head similarly varies in colour with the age of the maggot, and so 
does the tail segment. It has eight little black dots, or warts, on each 
segment, so as to make two rows down the back, and one on each side ; 
and it has three pairs of claw-feet (one pair on each of the three 
segments nearest the head); four pairs of sucker-feet beneath the 
body, and another pair of sucker-feet at the end of the tail. 
The attention of the reader is particularly directed to the number 
of the sucker-feet beneath the body being no more than four pairs, and 
also to the circumstance of the caterpillar, after leaving the fruit, going 
(save in quite exceptional cases) to the trunk of the Apple tree, as 
these are points by which the infestation of the Codlin Moth may be 
clearly distinguished from that of the Apple Sawfly, and the requisite 
measures of prevention be consequently applied. 
Excepting in these two points mentioned above, it will be found 
that the method of attack of the Apple Sawfly closely resembles that of 
the Codlin Moth. Like it, the Sawfly (Hoplocampa testudinea) appears 
with the Apple blossoms, and the females may then be seen flying 
amongst the flowers, and may be caught in the act of egg-laying within 
* An instance has been recorded by Mr. Frazer Crawford, in his exhaustive 
report on the Codlin Moth in South Australia, in which a number of the caterpillars 
which had let themselves down from Apples growing above a Raspberry bed 
sheltered themselves in the stumps of the old canes. 
B 2 
