A preliminary introduction to the study of entomologyTogether with a chapter on remedies, or methods that can be used in fighting injurious insects; insect enemies of the apple tree and its fruit, and the insect enemies of small grains . them in their good work. OYSTER-SHELL BARK-LOUSE. [Mytilaspis pomorum Bouch6.) The common Oyster-shell Bark-louse of the apple is too well knownby orchardists to require any extended description here. The illus-trations of the insectin figures 13 and 14 will at once call to mindthe insect which is meant. Unlike the Maple Scale, this insect de- her eggs
A preliminary introduction to the study of entomologyTogether with a chapter on remedies, or methods that can be used in fighting injurious insects; insect enemies of the apple tree and its fruit, and the insect enemies of small grains . them in their good work. OYSTER-SHELL BARK-LOUSE. [Mytilaspis pomorum Bouch6.) The common Oyster-shell Bark-louse of the apple is too well knownby orchardists to require any extended description here. The illus-trations of the insectin figures 13 and 14 will at once call to mindthe insect which is meant. Unlike the Maple Scale, this insect de- her eggs during late sum-mer, where they remain con-cealed beneath the shell during fall and winter. Nor is thisFig. 13.—Piece of bark containing scales of Oyster- , , ,. „ . shell Bark-Louse. [After Kiiey.] scale nearly SO proline as tlie one just referred to, since but from sixty to seventy-five eggs are laid by each female, whereas the other species is known to deposit from one to two thousand. Aside from this the life-histories of the two insects are near enough alike to need no further mention here. The male alone is winged, and issues during the summer. EEMEDIES. The very best direct remedy against this bark louse is the use of. APPLE TEEE AND ITS FRUIT. 147 kerosene emulsion at the time when the young are hatcliing and wan-dering about over the trees. One or two careful sprayings at such
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectinsects, bookyear1894
