. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 166 THE RBPOKT OF THE No. 36 Where the larvae were very abundant they did a great deal of damage both to the foliage and the fruit. Large numbers of the terminal leaves in such cases, especially on the top of the tree, were badly tattered and riddled by them, but none of the trees were defoliated as had happened in some cases in Cololado and elsewhere. In the orchard at Simcoe there was so light a setting of fruit on most of the Spy trees this year that it was difficult to form any estimate of the
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 166 THE RBPOKT OF THE No. 36 Where the larvae were very abundant they did a great deal of damage both to the foliage and the fruit. Large numbers of the terminal leaves in such cases, especially on the top of the tree, were badly tattered and riddled by them, but none of the trees were defoliated as had happened in some cases in Cololado and elsewhere. In the orchard at Simcoe there was so light a setting of fruit on most of the Spy trees this year that it was difficult to form any estimate of the amount of loss. On one well-laden tree, however, of another variety in among the Spy trees fully 50 per cent, of the fruit was ruined either by the destruction ot the fruit blossoms or by the killing of the young fruits themselves or by rendering much of what remained culls. In an orchard near Hamilton I estimated that some large Greening trees had fully 50 per cent, of the crop des- troyed. Mr. Sexsmith of Trenton estimated that in his ten or twelve acre orchard the crop had been lessened fully 50 per cent, in the infested orchard both last year and this. Another orcha-rd of his, and all the neighboring orchards visited by me, had suffered almost no injury. In Norfolk County we found only the one orchard at all seriously infested, though a few larvae were to be found all through the Egg masses of A. argyrospila. The four to the right have hatched, and are white; the remainder are iinhatched and are dark brown. (Natural size.) An examination of the only three badly infested orchards known to me showed that any variety of apple was subject to attack and that there was no reason to believe that there was any special attractiveness in the Spy over other varieties. Beief Desceiptioxs of the Adults of Each Species. The adult of the Fruit-tree Leaf-roller is a moth with a wing expanse of from two-thirds of an inch to one inch. The general colour of the fore wings is a rust
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsectp, bookyear1872
