. Insekten, Früchte. Illustriert mit vier hundert und vierzig Holz-Schnitte. Schadinsekten. 122 INSEKTEN SCHÄDLICH FÜR DAS APPLE. Erste festgelegt sind von einem Licht gelber oder grüner Farbe, aber allmählich dunkler geworden, und schließlich schwarz. Sobald die Knospen beginnen im Frühjahr zu erweitern, diese Eier brüten in kleinen Läuse, die sich auf die Schwellung Knospen und die kleine, zarte Blätter suchen, und ihre Schnäbel einsetzen, ernähren sich von den Säften. Alle Läuse somit in diesem Zeitraum des Jahres geschlüpft sind Frauen und Reife in zehn oder zwölf Tagen erreichen, wenn Sie ab der Geburt bis zum jungen Leben zu verzichten, Prod

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. Insects injurious to fruits. Illustrated with four hundred and forty wood-cuts. Insect pests. 122 INSECTS INJURIOUS TO THE APPLE. first laid are of a light yellow or green color, but gradually become darker, and finally black. As soon as the buds begin to expand in the spring, these eggs hatch into tiny lice, which locate themselves upon the swelling buds and the small, tender leaves, and, inserting their beaks, feed on the juices. All the lice thus hatched at this period of the year are females, and reach maturity in ten or twelve days, when they commence to give birth to living young, producing about two daily for two or three weeks, after which the older ones die. The young locate about the parents as closely as they can stow themselves, and they also mature and become mothers in ten or twelve days, and are as prolific as their predecessors. They thus increase so rapidly that as fast as new leaves expand colonies are ready to occupy them. As the season advances, some of the females acquire wings, and, dispersing, found new colonies on other trees. When cold weather approaches, males as well as females are produced, and the season closes with the deposit of a stock of eggs for the continuance of the species another year. When newly born, the apple aphis is almost white, but soon becomes of a pale, dull greenish yellow. The mature females are generally without wings; their bodies are oval in form, less than one-tenth of an inch long, of a pale yellowish- green color, often striped with deeper green. The eyes are black, honey- tubes green, and there is a short, tail-like appen- dage of a black color. The accompanying il- lustration (Fig. 122) of a winged male and wing- less female, highly mag- nified, shows the struc- ture and shape of the insect; its beak, which proceeds from Fig. 122.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may n

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• bookcentury1800
• bookdecade1880
• bookpublisherphila
• bookyear1883