. Injurious insects and the use of insecticides [microform] : a new descriptive manual on noxious insects, with methods for their repression . insect undergoes all its trans-formations in the burrow of the larva, which, as it approaches the timefor pupation, gnaws nearly through the stem, leaving a thin layer ofbark, through which the emerging moth readily works its way. The inferior size of the fruit and impoverished growth of the stalk isa sure indication of the presence of this pest. Though commonlyinfesting the currant this insect is but rarely found on the gooseberry. Remedies.—Prune in a
. Injurious insects and the use of insecticides [microform] : a new descriptive manual on noxious insects, with methods for their repression . insect undergoes all its trans-formations in the burrow of the larva, which, as it approaches the timefor pupation, gnaws nearly through the stem, leaving a thin layer ofbark, through which the emerging moth readily works its way. The inferior size of the fruit and impoverished growth of the stalk isa sure indication of the presence of this pest. Though commonlyinfesting the currant this insect is but rarely found on the gooseberry. Remedies.—Prune in autumn and burn all infested stems. THE CURRANT LEAF-HOPPER. {Empoa albopicta.) There are two broods of this insect each year, but the first does the greatest damage to the currautand gooseberry. This insect is of a pale,greenish color, and is aboutthe tenth of an inch inlength. It is found on theunder-side of the leaves, latein spring or early in summer,sucking out their causing tiuj- white spotson the upper surface of —Tobacco pow-der dusted over the leaves is said to be an effective remedy. Pyre-. 6 a Fig. 86.—Currant Adult. 6. Nymph, maguifiecl. [Wend.) SMALL FRUITS. 107 thrum, either iu powder or decoction, is probably the most desirableinsecticide for use in destroying this pest. THE CURRANT APHIS. (Myzus ribis.) When the leaves of the currant appear curled, and have a distinctreddish tinge in early summer, the bushes are infested by a small,yellowish louse, which may be found by examining the under-side ofthe leaves. This species, in habits and life history, is a migratoryaphis, much like the aphides previously discussed. It leaves the currant bushes iu mid-summer for some more succulentplants, returning iu autumn to deposit its tiny black eggs, which arelaid on the stems and buds. Remedies.—Spray with kerosene emulsion early in the season,before the aphides haA^e appeared in large numbers. For the fewbushes of the
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbenefic, bookyear1894
