. Class book of economic entomology, with special reference to the economic insects of the northern United States and Canada. Beneficial insects; Insect pests; Insects; Insects. Fig. 84. — Aspidistra scale (Hemichionaspis aspidistrae). Fe- male scale, enlarged. {After Forbes.) Fig. 85.—Male scale of the Aspidistra scale, enlarged. {After Forbes.) others on the leaves; and summer females, producing several generations. Oviparous females lay eggs in the fall after mating with males (Fig. 81). Woolly Maple Leaf Scale {Phenacoccus acericola Walsh and Riley). —A pest of maple trees, often confused

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. Class book of economic entomology, with special reference to the economic insects of the northern United States and Canada. Beneficial insects; Insect pests; Insects; Insects. Fig. 84. — Aspidistra scale (Hemichionaspis aspidistrae). Fe- male scale, enlarged. {After Forbes.) Fig. 85.—Male scale of the Aspidistra scale, enlarged. {After Forbes.) others on the leaves; and summer females, producing several generations. Oviparous females lay eggs in the fall after mating with males (Fig. 81). Woolly Maple Leaf Scale {Phenacoccus acericola Walsh and Riley). —A pest of maple trees, often confused with the Cottony Maple Scale. Oviparous, 3^^ to 3-^ inch long, yellow, rounded-oval. Other Greenhouse Scales Lemons, crotons, oleanders, ivies, etc. in greenhouses are frequently attacked by species of Coccus, Saissetia, AspidlotusjChrysomphaUts,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Lochhead, William, 1864-. Philadelphia, Blakiston

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsects, bookyear1919