. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 0' «-'""*5'^ Fig. 11. Fig. 11, represents the Fall Canker Worm A. pometaria ; a, the wit ged male ; 6, the wingless female ; c, a portion of an antenna magnified ; d, segment of larva, magnified,. Fig. 12. Fig 12, the Spring Canker Worm (P. vernata); a, the winged male ; h, the wingless female ; c, a portion of an antenna magnified ; d, seg ment of larva, highly magnified. It is nearly a century since Prof. Peck, one of the earliest of American entomolo- gists, penned his " Natural H
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 0' «-'""*5'^ Fig. 11. Fig. 11, represents the Fall Canker Worm A. pometaria ; a, the wit ged male ; 6, the wingless female ; c, a portion of an antenna magnified ; d, segment of larva, magnified,. Fig. 12. Fig 12, the Spring Canker Worm (P. vernata); a, the winged male ; h, the wingless female ; c, a portion of an antenna magnified ; d, seg ment of larva, highly magnified. It is nearly a century since Prof. Peck, one of the earliest of American entomolo- gists, penned his " Natural History of the Canker Worm," which even then was making itself known as a depredator in the New England orchards. Our two species of moths resemble each other so very closely, both in the larval and adult stages, that the trained enton ologist alone can readily distinguish them. This, however, is not a matter of very great importance trom the economic standpoint, as the habits of both species are identi- cally the same, and the same course of treatment will destroy the one or the other. The species are generally distinguished as the spring and autumn Canker Worms, but the larvM of both species appear in early summer and have the same pernicious habits of reaping where they have not .sowed. These larvie are pale greenish " ioopers " when young, becoming more striped and darker with moults. Voracious eaters, they rapidly defoliate the trees upon which they feed, and when fully grown they drop, by silken threads, to the ground, to burrow a few inches below the surface and construct a cell in which to pupate, the moths a[)pearing partly in the autumn and partly in the spring. In his address last year Dr. Bethune made mention of the abundance of Canker Worms at several places in Canada, one of these being Ottawa. Having watched the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability -
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsectp, bookyear1872
