. Injurious insects of the farm and garden. With a chapter on beneficial insects. Insects. 252 INJURIOUS I1TSECT3 seen, and there is every reason to believe that he has no existence. Nor does the female ever acquire wings. It is but a transient summer state, not at all essential to the perpetuation of the species, and does, compared with the other type, but trifling damage. As already indicated, the autumnal individuals of gal- licola descend to the roots, and there hibernate. There is every reason to believe also that, throughout the sum-. GRiPE PHTLLOXERA, KOOT-INHABITINQ TYPE. a, Roots of C
. Injurious insects of the farm and garden. With a chapter on beneficial insects. Insects. 252 INJURIOUS I1TSECT3 seen, and there is every reason to believe that he has no existence. Nor does the female ever acquire wings. It is but a transient summer state, not at all essential to the perpetuation of the species, and does, compared with the other type, but trifling damage. As already indicated, the autumnal individuals of gal- licola descend to the roots, and there hibernate. There is every reason to believe also that, throughout the sum-. GRiPE PHTLLOXERA, KOOT-INHABITINQ TYPE. a, Roots of Clinton vine, showing relation of Swellings to Leaf-palls, and power of resisting decomposition : 6, Laiva aa It appears when hibernating; c, d. Antenna and Leg of same : e. /, ff, Forms of more mature Lice : h. Granulations of Skin ; i. Tubercle. mer, some of the young lice hatched in the galls are passing on to the roots; as, considering their size, they are great travellers, and show a strong disposition to drop, their natural lightness enabling them thus to reach the earth with ease and safety. At all events, we know from experiment, that the young gallicoJa, if con- fined to vines on which they do not normally form galls, will, in the middle of summer, make themselves perfectly at home on the 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 Treat, Mary, b. 1835. New York, Orange Judd
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectinsects, bookyear1887
