. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. Fig. 36. Fig. 35. cases attached to twigs, is a case in point. (Fig. 35, a and b, represents the curious cases made by these worms ; c, the head of a larva ; d, the moth. Fig. 36, shows a case covered with a bunch of withered leaves.) Many years ago I urged the importance of preserving the several parasites known to prey upon it, in the following language :* The orchardist has but to bear in mind that it (the leaf-crumpler) is single brooded and that it passes the winter in its case, and he will un
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. Fig. 36. Fig. 35. cases attached to twigs, is a case in point. (Fig. 35, a and b, represents the curious cases made by these worms ; c, the head of a larva ; d, the moth. Fig. 36, shows a case covered with a bunch of withered leaves.) Many years ago I urged the importance of preserving the several parasites known to prey upon it, in the following language :* The orchardist has but to bear in mind that it (the leaf-crumpler) is single brooded and that it passes the winter in its case, and he will understand that by collecting and destroying these cases in the dead of the year when the tree is bare, he effectually puts a stop to its increase. . V/hether col- lected in winter or pulled off the trees in spring or summer, these cases should always be thrown into some small vessel and deposited in the centre of a meadow or field away from any fruit trees. Here the worms will wander about a few jards and soon die from exhaustion and \\ant of food, while such of the parasites, hereafter mentioned, as are developed or in the pupa state will mature and eventually fliy off. In this manner, as did Spartacus of old, we swell the ranks of our friends while defeating our foes. The practical value of this suggestion was subsequently fully demonstrated, and especially by the late D. B. Weir, who, at a meeting of the Illinois Horticultural Society, as secretary of a committee appointed by said society to consider the best means of secur- ing co-operation in the warfare against the fruit-growers' insect enemies, announced that this policy had been followed with happy results. 'Fourth Report, Insects of Missouri, 1871, p. 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 Entomological Society of Ontario; Ontario. Dept
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsectp, bookyear1872
