. A text-book of agricultural zoology. Zoology, Economic. LEPIDOPTEKA (MOTHS). 189 then to the outside, where they form a large hole through which the " frass " is passed out. The maggot, when reaching maturity, is said to return to the core and devour that part. When mature, the larva is a little more than half an inch long, pale pinkish white with scattered hairs over it, and the usual number of legs. On reaching the fuU-grown stage the maggot leaves the apple: if the fruit remains still on the tree it lowers itself down by a thread of silk to the ground, but generally the apple ha
. A text-book of agricultural zoology. Zoology, Economic. LEPIDOPTEKA (MOTHS). 189 then to the outside, where they form a large hole through which the " frass " is passed out. The maggot, when reaching maturity, is said to return to the core and devour that part. When mature, the larva is a little more than half an inch long, pale pinkish white with scattered hairs over it, and the usual number of legs. On reaching the fuU-grown stage the maggot leaves the apple: if the fruit remains still on the tree it lowers itself down by a thread of silk to the ground, but generally the apple has fallen by the time the larva is full fed., The majority reascend the tree and spin cocoons of dirty - white silk beneath the bark, in which they turn to chestnut - brown pupse. Some larvae remain as such in the cocoon until the spring, others pupate in the autumn. All kinds of apples are attacked, no variety being immune as far as is known. This pest is found all over the world, being easily distributed. In many cases it is accountable for the loss of quite half of the crop, especially in badly kept orchards. Prevention and Remedies.—This pest is one of the easiest to prevent and destroy if taken in time. It is surprising how many larvaa can be trapped by tying a band of cloth round the tree trunks close to the ground : the ascending caterpillars here find shelter and pupate; the bands can be taken off in the winter and burnt with the pupse in their folds. Many, however, change on the ground, especially if rough grass grows beneath. Fig. 86.—CoDLiN Moth (Carpocajpsa povwnella). (Whitehead.) 1, Larva; 2, pupa; 3, imago; 4, diseased Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Theobald, Frederick Vincent, 1868-1930. Edinburgh and London, W. Blackwood and sons
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1899
