. A manual of injurious insects [microform] : with methods of prevention and remedy for their attacks to food crops, forest trees, and fruit : to which is appended a short introduction to entomology. Insect pests; Agricultural pests; Entomology; Insectes nuisibles, Lutte contre les; Ennemis des cultures, Lutte contre les; Entomologie. AMERICAN BLIGHT. 281 Aphis); and from Chermisinrp., in which this third vein is absent (as in Larch Aphis and Spruce Aphis).. Winged Woolly Aphis, magniiied. The Woo ly Aphides are without honey-tubes (or have thorn in rudimentary form), and underneath the wool a
. A manual of injurious insects [microform] : with methods of prevention and remedy for their attacks to food crops, forest trees, and fruit : to which is appended a short introduction to entomology. Insect pests; Agricultural pests; Entomology; Insectes nuisibles, Lutte contre les; Ennemis des cultures, Lutte contre les; Entomologie. AMERICAN BLIGHT. 281 Aphis); and from Chermisinrp., in which this third vein is absent (as in Larch Aphis and Spruce Aphis).. Winged Woolly Aphis, magniiied. The Woo ly Aphides are without honey-tubes (or have thorn in rudimentary form), and underneath the wool are mostlyTf a yellowish, reddish, or reddish plum-colour. The winded specimens are described as pitchy between the wines and green or with the abdomen of a chocolate-brown S wind- less females may be found packed closely together in the cottony masses, with the pale reddish young moving about August * ^^'"^''^ specimens may be found in July and Prevention and great harbouring points of this Aphis, and the nooks from which the broods come forth m spring to infest the trees, are crevices, especially such as are formed of young bark sheltered unde^ old dead masses It 18 therefore very important to keep up a clean healthv well-trimmed state of the branches, such as wiH not allow of lurking-places, or, if they do exist, will allow of these poTnts of attack being carefully watched. Boughs must be removed m pruning sometimes, and where the Woolly Aphis exists it IS certain to try to effect a lodgment under tlL rCofToung bark that comes rollmg forward over the stump; but an eye to tins matter, and a few strong soap-suds brushed on the first bit of wool seen will keep all right; whilst on trees with the boughs maimed by beating the crop off, bad pruning nieces torn off by the wind, &c., the Aphis gets suchThdd' iftl e rough bark as can hardly be got over. It is also very desirable to keep the trees from touching eac^ other, to keep the ground below them in decent
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectentomology, bookyear1
