. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 112 REPORT OF No. 10 years lias attracted so nmch attention, and so many enquiries have been re- ceived concerning the best methods for its eradication, that it is hoped earnest efforts will be made at once by all concerned to get it under control. The Oyster-shell Bark-louse (Mytilaspis pomorum or Lepidosaphes ulmi Linn, as it is now called) is widely scattered throughout the orchards of On- tario, and the damage done by it is very considerable over the Province and rapidly on the increase.. Fig.
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. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 112 REPORT OF No. 10 years lias attracted so nmch attention, and so many enquiries have been re- ceived concerning the best methods for its eradication, that it is hoped earnest efforts will be made at once by all concerned to get it under control. The Oyster-shell Bark-louse (Mytilaspis pomorum or Lepidosaphes ulmi Linn, as it is now called) is widely scattered throughout the orchards of On- tario, and the damage done by it is very considerable over the Province and rapidly on the increase.. Fig. 32—Trombidium i.ocustarum—(a) female with her hatch of eggs : (6) newly-hatched larva—natural size shown by the dot in a circle on the right; (c) egg; (d, f) empty eggs-shells (after Riley.) Although of European origin, it has been known in America for more than a century, and has gradually spread throughout the larger portion of North America. This scale is a very serious pest in orchards which are neglected and badly treated, but experience has shown that with careful treatment it can be readily kept in check. It has been found to occur on the following trees and shrubs: Apple, plum, pear, wild red cherry, grape, currant, rose, maple, poplar, ash, birch, and various others.. 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 work.. Entomological Society of Ontario; Ontario. Dept. of Agriculture. Toronto, The Society