. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 190S ENTOMOLOGICAL SOCIETY. 109 11. Large silken cocoons, 3 inches long tirmly attached to twigs during winter, Cecropia Moth. (Saniia cecropia), Fig. Fig. 90. Cocoon of the Cecropia moth. 12. Elongated white, ribbed cocoons, A inch long, on twigs during winter,— Apple Leaf Bucculatrix. (B. pomifoliella). 13. Mussel-shaped scales with whitish eggs underneath in winter,— Oyster Shell BarJc-Louse. (Mytilaspis pomorum). 14. Whitish scales with purple eggs underneath in winter,— Scurfy Bark-Lonse.
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 190S ENTOMOLOGICAL SOCIETY. 109 11. Large silken cocoons, 3 inches long tirmly attached to twigs during winter, Cecropia Moth. (Saniia cecropia), Fig. Fig. 90. Cocoon of the Cecropia moth. 12. Elongated white, ribbed cocoons, A inch long, on twigs during winter,— Apple Leaf Bucculatrix. (B. pomifoliella). 13. Mussel-shaped scales with whitish eggs underneath in winter,— Oyster Shell BarJc-Louse. (Mytilaspis pomorum). 14. Whitish scales with purple eggs underneath in winter,— Scurfy Bark-Lonse. (Chionaspis furfurus). 15. Minute black circular scales with a depressed ring about a central nipple,— San Jose scale. (Aspidiotus perniciosua). 16. A mass of eggs on a cocoon fastened to a dead leaf or a twig in winter,— Tussock Moth. (Orgyia leucostigma). 17. Eggs in oval slits,— Buffalo Tree-Hopper, (Ceresa bubalus). A Key to Plum Insects. A. Attacking the Boots : 1. Burrowing about the crown of the roots, occasionally in young trees,— ' Peach-tree Borer. (Sannina exitiosa). B. Attacking the Trunk, Branches, and Twigs : 1. Making tunnels in the wood ; saw-dust-like excrement at the mouth of unnels,— Flat-headed Borer. (Chrysobothris femorata). 2. Making tunnels in the bark : Fruit Bark Beetle. (Scolytus rugulosus). 3. Bases of buds perforated, the bark becomes discolored, and the leaves and fruit wither,— Pear-Blight Beetle. (Xyleborus pyri). 4. Fixed to Bark : a Fiat, or saddle-shaped, or hemispherical dark brown scales. Large scales after are brittle and contain only a whitish dust or empty egg-shells. Wintering forms are small and flattish,— Plum juecanium. (Lecanium cerasifex). h Ashy gray appearance of bark of badly infested trees ; small gray, or black circular scales,— San Jose scale. (Aspidiotus perniciosus). c Mussel-shaped scales, with whitish eggs underneath in winter,— Oyster-Shell Bark Louse. (Mytilaspis pomorum). d. Bark scu
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsectp, bookyear1872
