. Injurious insects : how to recognize and control them . Insect pests; Insect pests. GBCBS IX ST£M OB SHOOT 247 spring by inmcturing the new A^'ood. The part injured later de^'elops into a ijall an inch or an inch and a half long, whieh shows a deep scar on one side. Eggs are laid in the punctures, and grubs develop in the pith of the cane. The adults come out in late sununer, and hide in rubbish o\'er winter. Since the beetles feed to some extent on the leaf and stem tissues, they may be poisoned by spraying with arsenate of lead or Paris green. Galls should be cut off and destroyed before
. Injurious insects : how to recognize and control them . Insect pests; Insect pests. GBCBS IX ST£M OB SHOOT 247 spring by inmcturing the new A^'ood. The part injured later de^'elops into a ijall an inch or an inch and a half long, whieh shows a deep scar on one side. Eggs are laid in the punctures, and grubs develop in the pith of the cane. The adults come out in late sununer, and hide in rubbish o\'er winter. Since the beetles feed to some extent on the leaf and stem tissues, they may be poisoned by spraying with arsenate of lead or Paris green. Galls should be cut off and destroyed before the time of emergence of adults in late summer. The Grapevine Giidlet (Ampcloghjptcr atcrLcv.) This insect in its adult stage is similarto the grape-cane gall-maker, but its color is black. It injures terminal shoots by girdling them, so that the end of the shoot later falls to the ground. The young or grub develops within the shoot. The adult emerges in the fall and hibernates in the leaves or trash. Sprapng with arsenate of lead or Paris green in May or June will kill the beetles. In early summer cut off the ends of canes showing the charac- teristic girdling, making the cut a few inches below the girdle. The Blackberry Pithy-gall {Diastroplui^ turgidtis Bass.) Curious, hard enlargements of the canes of blackberries are caused by small, fleshy larva^ which hatch from eggs laid by a black gall-fly. Several larva^ inhabit each gall, remaining vritliin it as pupa? o^'er winter. The species is not abundant enough to be a pest, but galls should be re- moved whene^â e^ Fig. .'1-7. â The Blackberry Pithv-gall. 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 not perfectly resemble the original O'Kane, Walter Collins, b. 1877. New York : The Macmillan Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsectp, bookyear1912
