. Caterpillars attacking tomatoes. Caterpillars; Tomatoes. B. Fig. 2.—The corn earworm, Heliothis obsoleta (Fab.): A, eggs on tomato (courtesy of F. H. Wymore) ; B, full-grown caterpillars; C, pupae or chrysalids removed from the soil. (From Ext. Cir. 99.) may be marked with longitudinal stripes of various colors. They are very cannibalistic and, where two meet in competition or combat, the larger one is usually victorious. On completing development, they bur- row into the soil and construct pupal cells a few inches below the surface, from which they build tunnels upwards for the subsequent em
. Caterpillars attacking tomatoes. Caterpillars; Tomatoes. B. Fig. 2.—The corn earworm, Heliothis obsoleta (Fab.): A, eggs on tomato (courtesy of F. H. Wymore) ; B, full-grown caterpillars; C, pupae or chrysalids removed from the soil. (From Ext. Cir. 99.) may be marked with longitudinal stripes of various colors. They are very cannibalistic and, where two meet in competition or combat, the larger one is usually victorious. On completing development, they bur- row into the soil and construct pupal cells a few inches below the surface, from which they build tunnels upwards for the subsequent emergence of the adults. Larvae of the overwintering individuals generally pupate deeper in the soil than those of the summer brood. The chrysalids, or pupae, (fig. 2, C) vary from dark amber to chestnut-brown and are about % of an inch in length. The duration of the pupal period is only 2 or 3 weeks during the summer but overwinter for the late fall brood. By the first of September, or even before, many of the larvae that pupate are overwintering forms. Some of these may remain in the pupal stage for a year or more. INSECTS COMMONLY CONFUSED WITH THE CORN EARWORM Several other caterpillars are sometimes confused with the corn ear- worm. Most of these cause very little damage and may be present in fairly large numbers before the corn-earworm infestation occurs. A. 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 Michelbacher, A. E. (Abe Ezra), 1899-1991; Essig, E. O. (Edward Oliver), b. 1884. Berkeley, Cal. : Agricultural Experiment Station
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Keywords: ., bo, bookcentury1900, booksubjectcaterpillars, booksubjecttomatoes
