Insects and insecticidesA practical manual concerning noxious insects and the methods of preventing their injuries . hese pests away is to spray thebushes forcibly every day or two, to frighten awaythe flies and wash off the larvae. If this process is gonethrough with sufficient force and thoroughness, it isthe neatest and best remedy. The slugs also may beeasily killed by spraying or dusting the infestedbushes with hellebore or insect powder. The Rose Leaf-hopper. Typhlocyba rosse. Owners of rose bushes are frequently annoyed byfinding the lower sides of the leaves covered with asmall white i
Insects and insecticidesA practical manual concerning noxious insects and the methods of preventing their injuries . hese pests away is to spray thebushes forcibly every day or two, to frighten awaythe flies and wash off the larvae. If this process is gonethrough with sufficient force and thoroughness, it isthe neatest and best remedy. The slugs also may beeasily killed by spraying or dusting the infestedbushes with hellebore or insect powder. The Rose Leaf-hopper. Typhlocyba rosse. Owners of rose bushes are frequently annoyed byfinding the lower sides of the leaves covered with asmall white insect that sucksout the cell contents andgives the upper surfaces apeculiar white - spotted ap-pearance (Fig. 82). This isthe Rose Leaf-hopper, a spe-cies that has been known toinjure these lovely ornamen-tal plants for nearly a cen-tury. The adult, shown con-siderably magnified at Fig. Fig. 82. Rose leaf injured toy . leaf-hoppers. 83, a, is a little more than one- tenth of an inch long, with a yellowish-white body,and white, semi-transparent wing-covers. In com-mon with other leaf-hOppers this insect has long. INJURING THE LEAVES. 157 hind legs, by means of which it is enabled to maketremendously long leaps when disturbed. The fullygrown nymph (b) isalso whitish, and itsback is well protectedby numerous longspinous hairs. There. are said to be severalbroods each seasonRemedies.— pests are mucheasier to destroy be-fore they are fullydeveloped than afterwards. Spraying or dusting theinfested plants with pyrethrum, or insect powder,is a simple and efficient remedy. Tobacco, in theform either of a powder or a decoction, is also good;and kerosene emulsion will destroy the pests.
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Keywords: ., bookcentury1800, bookdecade1890, bookidi, booksubjectinsecticides
