. Insetti e Malattie delle piante : contenente rimedi e suggerimenti consigliati per l'adozione da parte degli agricoltori, frutta-dei coltivatori e giardinieri della provincia . Parassiti; le malattie fungine di piante; pesti di insetto. 28 â scheda provinciale di Orticoltura. 1897. La Prugna CUECULIO (Conotrachdus nenupharânerhst). Il diflferent stadi sono mostrati nell'incisione sopra: (a) rappresenta il grub molto ingrandito; (6) la crisalide, e (c) il maggiolino, entrambe ingrandite; (d) il giovane frutta, mostrando il orescent a forma di marchio realizzato dall'insetto e il ourculio, dimensione di vita, al suo lavoro. Per quanto noto, questa peste di prugna

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. Insect pests and plant diseases : containing remedies and suggestions recommended for adoption by farmers, fruit-growers, and gardeners of the province . Pests; Fungal diseases of plants; Insect pests. 28 â Provincial Board of Horticulture. 1897. THE PLUM CUECULIO (Conotrachdus nenupharânerhst). The diflferent stages are shown in the engraving above: (a) represents the grub much magnified; (6) the chrysalis, and (c) the beetle, both magnified; (d) the young fruit, showing the orescent-shaped mark made by the insect, and the ourculio, life size, at its work. So far as known, this pest of plum growers in Eastern States and Provinces does not occur in British Columbia, but it is advisable that our fruit-growers should know the appear- ance of the insect. It belongs to the family of snout beetles, so called from "^^ , . the shape of the head, which is elongated into a beak. The beetle is a small, Plum Curcuho. j.^^gjj^ grayish insect, about one-fifth of an inch long. The female deposits eggs in the young fruit of plums and cherries, causing them to drop prematurely, generally before the larvae are full grown. The Imported Currant Borer {Sesia tipuliformis) is reported from New Westminster, Burnaby, Vancouver, Vernon and Victoria. In the injurious stage of its existence this insect is a small whitish larvae that burrows up and down the stems Imported ^f currant and gooseberry bushes, stunting the growth and urran r r. ^gjj^g^jjjg them unfruitful. It hatches from eggs deposited singly on the young stems near the buds, early in summer, by a clear-winged wasp-like moth, with a bluish-black body and three yellow bands across the abdomen. The wings are transparent except at the borders, where they are brownish black. The young larvse gnaw through the stem to the centre, where p*â¢"' ^'o'h. they feed on the pith all summer, making a burrow several inches in length. When full grown the larvae eat through the stem wall almost to the outside and then change to chry

Parole chiave associate all'immagine

• bookcentury1800
• bookdecade1890
• booksubjectinsectpests
• bookyear