. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. ENTOMOLOGICAL SOCIETY OF ONTARIO. 3a effect. Codling moth, Plum curculio, Canker worm, Eye-spotted Bud-moth, Tent cater- pillars and Fall Web-worm have been abundant in some places, but their numbers have been brought down considerably wherever spraying with the arsenites waa resorted Fig. 14. -1, twig with scales ; !«, scale of male; 1^, winged male; Ic, scale of female- highly magnified. The Oyster-Shell Bark-louse is abundant throughout the province, and where orchards are neglected does mu
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. ENTOMOLOGICAL SOCIETY OF ONTARIO. 3a effect. Codling moth, Plum curculio, Canker worm, Eye-spotted Bud-moth, Tent cater- pillars and Fall Web-worm have been abundant in some places, but their numbers have been brought down considerably wherever spraying with the arsenites waa resorted Fig. 14. -1, twig with scales ; !«, scale of male; 1^, winged male; Ic, scale of female- highly magnified. The Oyster-Shell Bark-louse is abundant throughout the province, and where orchards are neglected does much harm. Spraying with kerosene emulsion when the young insects, emerge from the old scales, about 1st June, is the best remedy. The Scurfy Bark-lousBj Chionaspis fw-furus, Fig. 14, was sent from Essex County. One tree was badiy infested^ but a thorough spraying with kerosene emulsion entirely cleaned it. The New York Plum-scale (Lecanium) has been found, on enquiry, to be present ta some extent all through the Niagara peninsula and in some other western counties. Only two bad occurrences have been discovered, and I am much pleased to be able to report that these have both been eradicated by treatment with kerosene emulsion. The life- history of this scale is quite different from that of the Oyster-Shell Bark-louse. In this species, the young emerge at the end of June and make their way out on to the foliage, where they remain without growing much until autumn ; they then crawl back again on to the twigs and branches and hibernate there. When revived by the return of spring, they move again and fix themselves to the young wood, chiefly on the lower side of the smaller branches. They grow very rapidly in spring, and the tiny flat scales which hibernated, soon become large, conspicuous, dark brown, hemispherical scales, varying soixiewhat in size, but about one-eighth to one-sixth of an inch in length by about half of that length in height. The basal outline is ovate or almost r
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsectp, bookyear1872
