. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. side view of a single joint of the mature caterpillar enlarged ; the longitudinal lines are fewer in number, but broader an<l more distinct. The chrysalis is much tougher than that of the former species, being formed of densely spun silk of a buft' colour, interwoven on the outside with particles of earth. In the male moth, a fig. 4, the antennae kave ^jC^^' a greater number of joints, there being fifty or more in this species, whereas in rcrnata there are not quite forty. The wings are less tra
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. side view of a single joint of the mature caterpillar enlarged ; the longitudinal lines are fewer in number, but broader an<l more distinct. The chrysalis is much tougher than that of the former species, being formed of densely spun silk of a buft' colour, interwoven on the outside with particles of earth. In the male moth, a fig. 4, the antennae kave ^jC^^' a greater number of joints, there being fifty or more in this species, whereas in rcrnata there are not quite forty. The wings are less transparent but more glossy, the fore wings brownish gray but of a darker hue than in the other species, and are crossed by two more regular whitish bands, the ouier one enlarging near the apex, where it forms a large pale spot. The hind wings are grayish brown, with a faint central blackish dot, and usually a more or less distinct white lianil crossing them. The female, also, has a correspondingly greater number of joints in her antennas; the abdomen in both sexes is without spines, and that of the female terminates bluntly and is without an ovipositor. In fig. -4 b represents the female moth, d a segment of her abdomen, and c a portion of one of the autennse. Where the canker worms are numerous they are very destructive to apple trees, but are by no means confined in their operations to this particular tree ; they also attack the plumj the cherry the elm and a variety cff "other trees. In most localities where they occur they multiply rapidly, often enormously, and do an amount of damage correspond- ing with their numbers. The very young worms on the trees are seldom noticed, but as tliey accpiire age and increasing voracity the ridilled and seared appearance of the foliage speaks unmistakably of their presence. In the New England States they have been a terrible pest for many yeai-, and are now becoming plentiful in portions of Ontario particularly in some parts of the Nia
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsectp, bookyear1872
