Insetti dannosi per frutti . vels sul loro contenuto a suo piacere. La larva rende butone foro in una bacca e che appena abbastanza grande per admitits corpo. Quando disturbato, visualizza la grande attività, andworks il suo modo indietro fuori del frutto molto rapidamente, anddrops in parte o interamente al suolo mediante una struttura Silken thread,mediante il quale, quando il pericolo è passato, è abilitato torecover la sua precedente posizione. Esso è mostrato, sospeso e sullato frutta, in Fig. 369. Quando è completamente coltivato, questo intruso è di circa tre quarti del aninch lungo il corpo e spesso-est in medio, taperingslightly verso ogni ex-t

• Collaboratore: The Reading Room / Alamy Foto Stock
• ID dell’immagine: 2AJB7Y9
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• Dimensioni: 1956 x 1277 px | 33,1 x 21,6 cm | 13 x 8,5 inches | 150dpi

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Insects injurious to fruits . vels on their substance at its leisure. The larva makes butone hole in a berry, and that barely large enough to admitits body. When disturbed, it displays great activity, andworks its way backwards out of the fruit very quickly, anddrops part way or entirely to the ground by a silken thread, by means of which, when danger is past, it is enabled torecover its former position. It is shown, suspended and onthe fruit, in Fig. 369. When fully grown, this intruder is about three-quarters of aninch long, the body thick-est in the middle, taperingslightly towards each ex-tremity. It is of a pale-green color, sometimeswith a yellowish or red-dish tint, glossy andsemi-transparent. Thehead is small, pale brown, and horny-looking, and on the upper surface of the nextsegment is a patch of the same color antl appearance. When ready for its next change, which is usually beforethe fruit ripens, it lowers itself to the ground, and therespins its little silken cocoon among leaves or rubbish, as Fig. 369.. ATTACKING THE FRUIT. 359 already stated, and remains as a small, brown chrysalis withinthe cocoon until the following spring. There is only onebrood of these insects during the year. The infested fruit soon indicates the presence of the larvaby becoming discolored, and, if sufficiently grown, it ripensprematurely, otherwise it becomes of a dull whitish color, and soon withers. This pest also attacks the wild gooseberry, as well as the currant, both the white and the red variety. Inthis latter case, since the fruit is not large enough to containthe body of the larva, it draws the clusters together, and, fastening the berries to each other with silken threads, liveswithin the enclosure. Remedies.—The most satisfactory method of destroyingthis insect is by hand-picking, and its habits are such thatits presence is easily detected. Any berries found color-ing prematurely should be carefully examined, and, as thelarvae slip out and fall to the ground very quickl

Parole chiave associate all'immagine

• bookcentury1800
• bookdecade1880