. Bulletin of the Department of Agriculture. Agriculture; Agriculture. THE MELON FLY. 15 prevents secondary decays from starting, and these bring about the destruction of such portions as escape the larva?. The sectioned pumpkin in figure 17 shows how a colony of larvae may eat into a young fruit, become full grown, and leave it without causing a com- plete destruction. It also shows how smaller, weaker colonies may develop in the outer portion of the pulp. INJURY TO OTHER FRUITS. Complete destruction of fruits by larvse of the melon fly rarely occurs after they have become 4 to 5 inches
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. THE MELON FLY. 15 prevents secondary decays from starting, and these bring about the destruction of such portions as escape the larva?. The sectioned pumpkin in figure 17 shows how a colony of larvae may eat into a young fruit, become full grown, and leave it without causing a com- plete destruction. It also shows how smaller, weaker colonies may develop in the outer portion of the pulp. INJURY TO OTHER FRUITS. Complete destruction of fruits by larvse of the melon fly rarely occurs after they have become 4 to 5 inches in diameter, for then. Fig. 14.—Buds of male flowers of pumpkin damaged by larva? of melon fly, a, t, and c representing various stages in the destruction of the bloom. (Authors' illustration.) the portion of the fruit containing the seeds, or the part preferred by the larvae, is well protected by the outer meaty pulp and by the rind. Such colonies of larvae as are then able to become established in pumpkins and squashes usually develop in the outer portions of the fruit and do not penetrate to the center. In cantaloupes, water- melons, cucumbers, and marrows, however, the larvae more easily may work their way down to the softer, central portions and there com- plete their development, while the outer portion of the fruit remains quite firm. Figure 19 (p. 20) shows the cross section of a water- melon that had the general external appearance of being 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. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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