. Elementary textbook of economic zoology and entomology. Zoology; Insect pests. 458 ECONOMIC ZOOLOGY AND ENTOMOLOGY to penetrate, mealy-bugs are among the most dreaded pests in the orange and lemon orchards. Any of the sprays used at ordinary strength will leave many of them unharmed. A strong carbolic acid spray, made as suggested on page 417 and applied under a very high pressure, is the most efficient remedy yet found. Two or three or even more applications are often necessary before the insects can all be destroyed. Fumiga-. FIG. 218.—Mealy-bugs, Pseudococcus citri, on lemons. Quayle, pho
. Elementary textbook of economic zoology and entomology. Zoology; Insect pests. 458 ECONOMIC ZOOLOGY AND ENTOMOLOGY to penetrate, mealy-bugs are among the most dreaded pests in the orange and lemon orchards. Any of the sprays used at ordinary strength will leave many of them unharmed. A strong carbolic acid spray, made as suggested on page 417 and applied under a very high pressure, is the most efficient remedy yet found. Two or three or even more applications are often necessary before the insects can all be destroyed. Fumiga-. FIG. 218.—Mealy-bugs, Pseudococcus citri, on lemons. Quayle, photo by Doane.) (Reduced; after tion as ordinarily used on citrus trees does not kill nearly all of the mealy-bugs, and for this reason has not proved as satis- factory as some of the sprays. The mealy-bugs are attacked by several parasites and pre- daceous insects. The ladybird-beetles are particularly im- portant in the control of this pest. The larva? of one of these little beetles, Cryptolcemus montrouzieri, is covered with cottony tufts making it look very much like the mealy-bug. 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 Kellogg, Vernon L. (Vernon Lyman), 1867-1937; Doane, Rennie Wilbur, 1871-. New York, H. Holt and company
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