. Class book of economic entomology. Insects, Injurious and beneficial. [from old catalog]; Insects; Insects. Il8 ECONOMIC ENTOMOLOGY often 2 inches long, each row containing about 30 eggs; hatch in May and June. Nymphs.—Feed on plant-Hce and other insects; full grown late July and August. Control.—Prune out infested twigs and burn them. Other species of (Ecanthus deposit eggs in galls on willows, and in the stems of Helianthus, Solidago, Fig. 74.—CEcanthus niveus ovipositing. (After Parrott.) ORDER THYSANOPTERA (THRIPS) (Consult Tech. Ser. No. 12, Pt. Ill, and No. 21, Bur. Ent., U. S. D
. Class book of economic entomology. Insects, Injurious and beneficial. [from old catalog]; Insects; Insects. Il8 ECONOMIC ENTOMOLOGY often 2 inches long, each row containing about 30 eggs; hatch in May and June. Nymphs.—Feed on plant-Hce and other insects; full grown late July and August. Control.—Prune out infested twigs and burn them. Other species of (Ecanthus deposit eggs in galls on willows, and in the stems of Helianthus, Solidago, Fig. 74.—CEcanthus niveus ovipositing. (After Parrott.) ORDER THYSANOPTERA (THRIPS) (Consult Tech. Ser. No. 12, Pt. Ill, and No. 21, Bur. Ent., U. S. Dep. of Ag.) A. Female with a saw-like ovipositor, last segment of abdomen of female conical, that of male broadly rounded; wings usually present, the fore pair the stronger. B. Ovipositor curved upward; antennae 9-jointed; fore wings broad and rounded. MolothripidcB.—Genus Molothrips. BB. Ovipositor curved downward; antennae 7- to lo-jointed; wings usually narrow and pointed.—Thripida. Genera: Thrips, Eulhrips, Helio- ihrips, Anaphothrips. AA. Female without a modified ovipositor, last segment of abdomen tubular in both sexes; wings often absent, but when present similar in Btructu=^t '^i'" Phlceothripidm. Genera: Phlosothrips, Trichothrips, 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- [from old catalog]. Philadelphia, P. Blakiston's son & co
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsects, bookyear1919
