The caterpillar makes a discolored spot where it enters
the berry, Fig. 23, c. Therefore the infested fruit may be easily
detected and destroyed.
There is a small parasite that attacks this insect and helps to keep
it in check. The insect has been known in Europe over a hundred years.
It is not certain when it was introduced into America, but it is now
found from Canada to the Gulf of Mexico, and from the Atlantic to the
Pacific Ocean.
THE CODLING MOTH.
_Carpocapsa pomonella_ (Linn.)
This well known insect has a world-wide reputation, and is now found
wherever apples are raised.
[Illustration: FIG. 24.]
The moths are on the wing about the time the young apples are
beginning to set, and the female lays a single egg in the blossom end
of each apple. The fore wings of the moths when expanded, Fig. 24, g
(f, with the wings closed), measure about half an inch across, and are
marked with alternate wavy, transverse streaks of ashy gray and brown,
and have on the inner hind angle a large tawny brown, horseshoe shaped
spot, streaked with light bronze or copper color. The hind wings and
abdomen are light brown with a luster of satin.
Each female lays about fifty eggs, which are minute, flattened,
scale-like bodies of a yellowish color. In about a week the eggs hatch
and the tiny caterpillar begins to eat through the apple to the core,
Fig.
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