. Annual report. Entomological Society of Ontario; Insect pests; Insects. 1899] ENTOMOLOGICAL SOCIETY. NOTES ON INSECTS OF THE YEAR—DIVISION No. 3, TORONTO DISTRICT, By Arthur Gibson, Assistant Entomologist, Central Experimental Farm, Ottawa. Toronto and its vicinity have not, so far as I have been able to learn, suffered very seriously from the attacks of injurious insects during the past year. The Tussock Moth (Orgyia leucostigma) caused some damage to shade trees, mostly horse chestnut, along many of the streets in Toronto during the past summer, but was not nearly so abundant as in the pre
. Annual report. Entomological Society of Ontario; Insect pests; Insects. 1899] ENTOMOLOGICAL SOCIETY. NOTES ON INSECTS OF THE YEAR—DIVISION No. 3, TORONTO DISTRICT, By Arthur Gibson, Assistant Entomologist, Central Experimental Farm, Ottawa. Toronto and its vicinity have not, so far as I have been able to learn, suffered very seriously from the attacks of injurious insects during the past year. The Tussock Moth (Orgyia leucostigma) caused some damage to shade trees, mostly horse chestnut, along many of the streets in Toronto during the past summer, but was not nearly so abundant as in the previous few years. One locality especially, however, suffered seriously, namely, the St. James's Cathedral property. The horse chestnut trees around the Cathedral were attacked and the foliage entirely destroyed in some cases. In 1896, the year Toronto was visited to such an alarming extent by this pest, many of these trees, were perfectly stripped of leaves. The Toronto civic authorities ever since 1896 have been painting the shade tree on a large number of streets, with a mixture, which I think is called " Caterpillarine," but this apparently has not been much of a protection. No doubt many of these caterpillars which had fallen to the ground were prevented by this sticky substance from climbing up the trees, but of course, it did not have any effect on the great majority which were up in the trees and which were doing the damage. I think if the civic authorities had taken this matter up at the proper time and sprayed the trees sufficiently, before the caterpillars got too large, with one of the standard arsenical mixtures, such as Paris green, or arsenate of lead, much of the foliage would have been saved, and the pest to a much greater extent stamped out. Much good work, however, was done by the destruction of large numbers of egg masses, which were collected from the trees by school boys and others, at a small outlay by the City Council, The Tent Caterpillars, as
Size: 1727px × 1447px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsects, bookyear1872
