. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. a ipit. Fig. 31.—Time of emergence of spring-brood and first-brood moths, and the blossom periods of apple trees, during 1907,1908, and 1909, at North East, Pa. (Original.) The cold and wet spring of 1907 limited the emergence of the spring moths to a short period. The prevailing low temperature delayed the larvsB to such an extent that only 3 per cent of the first brood transformed. The entire second generation was reduced to per cent against per cent of the first generation. The season of 1908 was evid
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. a ipit. Fig. 31.—Time of emergence of spring-brood and first-brood moths, and the blossom periods of apple trees, during 1907,1908, and 1909, at North East, Pa. (Original.) The cold and wet spring of 1907 limited the emergence of the spring moths to a short period. The prevailing low temperature delayed the larvsB to such an extent that only 3 per cent of the first brood transformed. The entire second generation was reduced to per cent against per cent of the first generation. The season of 1908 was evidently very favorable for the develop- ment of the codling moth. The early spring brought out the moths by May 25. During the long and warm summer the majority of the larvae of the first brood transformed in great numbers (only per cent wintered), and the following brood of larvae attained a size equal to that of the first 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 United States. Bureau of Entomology. Washington : G. P. O.
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