. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 1906 ENTOMOLOGICAL SOCIETY. 125 The direct injury done to the stem or timber part of the tree affects the forester most seriously. One of the Cossidse or Carpenter moths, Prio- noxystus rohinice, was taken emerging from the sugar maple in the vicinity of Ridgeway, Ontario. The work of this Cossus moth was noticed in several trees in the same vicinity. These same maples are infested with one of the Siricidee which I take to be Tremex columha. (Fig. 28.) In the College nursery some Austrian pines abo
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 1906 ENTOMOLOGICAL SOCIETY. 125 The direct injury done to the stem or timber part of the tree affects the forester most seriously. One of the Cossidse or Carpenter moths, Prio- noxystus rohinice, was taken emerging from the sugar maple in the vicinity of Ridgeway, Ontario. The work of this Cossus moth was noticed in several trees in the same vicinity. These same maples are infested with one of the Siricidee which I take to be Tremex columha. (Fig. 28.) In the College nursery some Austrian pines about three feet high showed signs of dying in August. Upon examination it was found that the stems in some places were completely girdled beneath the bark. This work was being done by one of the Curculionidse, Pissodes strobi, (Fig. 61), de- scribed in Bulletin 22, Division of Forestry. In July the leaves of these pines began to droop and by August they had turned quite brown. In the second week of October I took a number of mature insects from their little cells beneath the bark. Upon a further examination about the first of November I found they had left this retreat for hibernation in other Fig. 61. Pissodes strobi, 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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