. Insect pests of farm, garden and orchard . -mphs do any injury to theroots of trees or plants, it is very rarely perceptible. The adultfemales, however, are capable of causing serious injury to youngfruit trees in orchards and nurseries by the numerous punctures inthe twigs, limbs and main stems made by them in the act of. Fig. 403.—The full-grown nymphs of the periodical cicada in different stagesof molting and the newly emerged adults with body and wings still softand white. ovipositing. The egg puncture makes an ugly wound, beyondwhich the twig dies, and the foliage of large trees on whic
. Insect pests of farm, garden and orchard . -mphs do any injury to theroots of trees or plants, it is very rarely perceptible. The adultfemales, however, are capable of causing serious injury to youngfruit trees in orchards and nurseries by the numerous punctures inthe twigs, limbs and main stems made by them in the act of. Fig. 403.—The full-grown nymphs of the periodical cicada in different stagesof molting and the newly emerged adults with body and wings still softand white. ovipositing. The egg puncture makes an ugly wound, beyondwhich the twig dies, and the foliage of large trees on whichhundreds of cicadas have oviposited turns brown, as if the treehad been scorched by fire. On young trees this results in destroy-ing the growth of a year or two and misshaping the tree, and thescars which remain later furnish points of attack for borers andthe woolly apple-aphis. SOME INSECTS INJURiOUS TO ORCHARD FRUITS 553 Just before the cicadas leave the ground they are attackedby hogs and also by disease. Upon leaving the ground they areat once assailed by a host of predaccous insects and various of the most valual)le insect enemies is a large wasp (Spheciusspeciosus Dru.), which nui}- often be seen bearing the adultsto its burrow, where the}- furnish food for her young. The Eng-lish sparrow is rem
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1915
