. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 1913 ENTOMOLOGICAL SOCIETY. 79 Blister Mite (Eriophyes pyri). In a large number of imsprayed orchards this mite is doing much to prevent average crops of apples. I sprayed a very badly infested orchard this spring to test the comparative effect of spraying before the buds had begun to burst and when they were bursting. April 25 and May 6 were the respective dates. Both gave excellent results; better than I had even hoped for. Brown Mite (Bryobia pratensis) or Bed Spider (Tetranychus himaculatus). I
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 1913 ENTOMOLOGICAL SOCIETY. 79 Blister Mite (Eriophyes pyri). In a large number of imsprayed orchards this mite is doing much to prevent average crops of apples. I sprayed a very badly infested orchard this spring to test the comparative effect of spraying before the buds had begun to burst and when they were bursting. April 25 and May 6 were the respective dates. Both gave excellent results; better than I had even hoped for. Brown Mite (Bryobia pratensis) or Bed Spider (Tetranychus himaculatus). In the Niagara District the foliage on many plum trees—whole orchards in fact— had a dull grayish color, indicating clearly that something was Avrong. On examina- tion towards the end of August it was quite evident that some mite, probably the Brown Mite, from the way the eggs were found all over the leaves and along. Fig. 23.—Blister Mite work on apple and pear leaves. the midrib'on the upper surface, and also from the absence of any silken web on the under surface, had caused this appearance. Unfortunately the mites had almost all disappeared. A few Red Spiders were seen, but I doubt Avhether these were the offenders. It is probable that the reason that lime-sulphur sprayed plum trees in the neighborhood had healthier foliage than Bordeaux sprayed ones was due to the efficiency of lime-sulphur against mites. Injury by Bed Spiders to Currant leaves in the Niagara District was very noticeable. Pear Psylla (Psylla pyncola). Early in the spring a good many psyllas were seen, but with the coming of the wet, cold weather they soon disappeared, and I saw none again until July 12, when a few nymphs were observed. They did not become numerous enough anywhere, I think, to do any appreciable damage. Cherry Fruit Flies (Rhagoletis cingiilata and RJiagohtis fausta). These two flies were about equally common, and did more damage to Miontmorency. Please note that these images are extra
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