Applied Entomology An Introductory Text book of Insects in Their Relations to M

Henry Torsey Fernald

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a b FIG. 207. Rose Scales (Aulacaspis rosce Bouche): a, female scales; 6, male scales. Considerably enlarged. (From Houser, Ohio Agr. Exp. Sta. Bull. 332. ) The Rose Scale (Aulacaspis rosce Bouche). Generally distributed in the United St. Ates on raspberry, blackberry, dewberry, rose, pear and some other plants. Female scales (Fig. 207) white with more or less yellow at margin; nearly circular, about one-tenth of an inch in diameter. Male scales white, nar- row, very small Plants thickly infest...ed appear as though sprayed with white- THE HOMOPTERA 215 wash. Winters in various stages, so all may be present at almost any time. Two or three generations per year. Control by cutting out the worst infested stems during the winter, and spraying with lime-sulfur as for San Jose" Scale in early spring. Whale-oil soap (1 Ib. In 1 gal. Water) may also be used.
The Pine-leaf Scale (Chionaspis pinifolice Fitch). Occurs generally in the United States on leaves of pine, and sometimes other evergreens.

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