. A treatise on some of the insects injurious to vegetation . Insect pests. THE jEGERIANS. 329 like humming-birds, Kg- ir>6. during the daytime, in the months of July and August. Their caterpillars bear a general resemblance to those of the genus Sphinx, and, as far as they are known, seem to possess the same habits. The JEgerians (jEgeriam:) constitute a very distinct group among Sphinges. They are easily recognized, in the perfected or winged state, by their resemblance to bees, hornets, or wasps, by their narrow wings, which are mostly transparent, and by the tufts or brush at the end of
. A treatise on some of the insects injurious to vegetation . Insect pests. THE jEGERIANS. 329 like humming-birds, Kg- ir>6. during the daytime, in the months of July and August. Their caterpillars bear a general resemblance to those of the genus Sphinx, and, as far as they are known, seem to possess the same habits. The JEgerians (jEgeriam:) constitute a very distinct group among Sphinges. They are easily recognized, in the perfected or winged state, by their resemblance to bees, hornets, or wasps, by their narrow wings, which are mostly transparent, and by the tufts or brush at the end of the body, which they have the power of spreading out like a fan at pleasure. They fly only in the daytime, and frequently alight to bask in the sunshine. Their habits, in the cater- pillar state, are entirely different from those of the other Sphinges; the latter living exposed upon plants whose leaves they devour, while the caterpillars of the JEgerians are concealed within the stems or roots of plants, and derive their nourishment from the wood and pith. Hence they are commonly called borers, a name, however, which is equally applicable to the larvse or young of many insects of other orders. The caterpillars of the iEgerians are whitish, soft, and slightly downy. Like those of other Sphinges they have sixteen feet, but they are destitute of a thorn or prominence on the last segment of the body. When they have come to their full size, they enclose themselves in p. 157 oblong oval cocoons (Fig. 157), made of fragments of wood or bark cemented by a gummy matter, and within these are trans- formed to chrysalids. The latter are of a shining bay color, 42. 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 Harris, Thaddeus William, 1795-1856; Flint, Charles Louis, 1824-1889. Boston : William White, printer to the
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