. Class book of economic entomology. Insects, Injurious and beneficial. [from old catalog]; Insects; Insects. 220 ECONOMIC ENTOMOLOGY light silky brownish-yellow, darker toward the fringed margin. Flies at night, about 1-2 weeks after the petals fall. Sometimes emerges as late as July ist in northern districts. Eggs.—A minute thin scale-like white object, 3^5 inch in diameter, at first transparent but later with a blackish streak. Each female deposits 60 to 75 eggs, mainly on the leaves i to 3 weeks after the blossoms fall; hatch in 5-10 days, or from 3 to 4 weeks after petals fall; 60 to 80 p
. Class book of economic entomology. Insects, Injurious and beneficial. [from old catalog]; Insects; Insects. 220 ECONOMIC ENTOMOLOGY light silky brownish-yellow, darker toward the fringed margin. Flies at night, about 1-2 weeks after the petals fall. Sometimes emerges as late as July ist in northern districts. Eggs.—A minute thin scale-like white object, 3^5 inch in diameter, at first transparent but later with a blackish streak. Each female deposits 60 to 75 eggs, mainly on the leaves i to 3 weeks after the blossoms fall; hatch in 5-10 days, or from 3 to 4 weeks after petals fall; 60 to 80 per cent, of larva? enter the young fruit at the calyx end. Larva.—At first whitish with distinct black tubercles on the body and black head; later the tubercles less distinct. When full grown larva. Fig. 135.—Larvne and pupa? of the codling moth in the bark. is ^4 inch long, whitish or pinkish, head dark brown, tubercles indistinct, thoracic and anal shields light brown. INIatures in 3-4 weeks. Winters as a larva within a white, tough, silken cocoon (Figs. 134 and 135). Pupa.—^Pale brown; }2 inch long, back armed with transverse rows of minute spines; within a cocoon; duration of spring pupa? about 21 days, of summer pupae about 15 days (July 3oth-August 14th in Maine). Life-history.—Winters as a full grown larva within a cocoon on the trunk, under bark, etc.; about the time of apple blossoming the larva transforms to a pupa, and the moth emerges 15 to 22 days later. The eggs are laid singly on the leaves, stems, and even fruit, where they hatch in 7 to 10 days. The young larva feeds for a short time on the leaves, but finds its way to the fruit which it enters usually at the calyx end. It then makes its way to the core. When full grown in 3 to 4. 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 Loc
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsects, bookyear1919
