. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 58 THE REPORT OF THE No. 19 The scale has been reported to us or found by us in very many places in Collingwood on the west to Trenton in the east. Its chief food plants in Ontario seem to be the apple and pear. It is said, however, to attack also the plum, cherry, currant, mountain ash, elm, basswood, Carolina poplar, and willow. Natural enemies : (1) A white fungus, commonly attacks it at Guelph. See Plate D. (2) A few of the scales were perforated in a manner characteristic of Chalcid flies, so
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 58 THE REPORT OF THE No. 19 The scale has been reported to us or found by us in very many places in Collingwood on the west to Trenton in the east. Its chief food plants in Ontario seem to be the apple and pear. It is said, however, to attack also the plum, cherry, currant, mountain ash, elm, basswood, Carolina poplar, and willow. Natural enemies : (1) A white fungus, commonly attacks it at Guelph. See Plate D. (2) A few of the scales were perforated in a manner characteristic of Chalcid flies, so that it is probably attacked by one of these tiny parasites. Remedies: Scrape the rough bark off the trunks of trees and use the same remedies as for San Jose Fig. 16. Curtis Scale (Asiyidiotus ostrdjeformis), greatly magnified. 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. of Agriculture. Toronto, The Society
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsectp, bookyear1872
