. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. Fig. 21. The chrysalis is about seven-tenths of an inch long, of a nearly uuit'oim daik hi own colour, and roughened with small blackish points or granulations. This insect is subject to the attacks of a parasite, a two- winged fly—a Tachina—probably the species known as the red-tailed Tachina tly, Emrista liucanki (see fig. 21, after Riley). It is not much unlike the common house fly in ap- pearance, is about a quarter of an inch long, with a white face, large reddish eyes, a dark hairy body with
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. Fig. 21. The chrysalis is about seven-tenths of an inch long, of a nearly uuit'oim daik hi own colour, and roughened with small blackish points or granulations. This insect is subject to the attacks of a parasite, a two- winged fly—a Tachina—probably the species known as the red-tailed Tachina tly, Emrista liucanki (see fig. 21, after Riley). It is not much unlike the common house fly in ap- pearance, is about a quarter of an inch long, with a white face, large reddish eyes, a dark hairy body with four, more or less, distinct lines down the thorax, and patches of a greyish shade along the sides of the abdo- men. The parent fly deposits her eggs on the back of the caterpillar, usually a short dis- tance behind the head, where they are cemented firmly by means of a peculiar secretion with which the insect is furnished. Three or four of these eggs are usually placed upon a single caterpillar, where, after a few days, they hatch, when the tiny worms eat their way through the skin into the inteiior of the body, where they feed upon the fatty mat- ters, instinctively avoiding the vital organs. When the caterpillar is about full grown it dies, and from its body emerge these three or four full-grown whitish grubs, which soon after their exit change to chrysalids. These are neaily one-fifth of an inch long, oval, smooth and of a dark brown colour, from which in due time the perfect flies escape. The Cylindrical Orthosoma {Orthosoma cylindricum, Fabr.) This formidable looking, long-horned beetle, fig. 22, is very common in most por- tions of Ontario during the month of July. It flies at night with a rapid and noisy flight, entering the open windows of lighted rooms during the lig. 22. evenings, often to the great alarm of nervous inmates. This beetle measures an inch and a quarter, or even more in length, and is about one-third of an inch in width. Its body is long and narrow,
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsectp, bookyear1872
