. Principles of economic zoo?logy. Zoology, Economic. INSECTA 113 Habits and Habitat.—Insects vary in their habitat. Most of them are terrestrial, some are aerial, others are aquatic, a few even being marine, while still others are subterranean. iobrum \^( "jj Mandible,^ (^. Fig. 85.—External anatomy of Caloyte'nus spre'tus, the head and thorax disjointed: up, Uropatagium; /, furcula; c, cercus. (Drawn by J. S. Kingsley.) (From Packard's "Zoology," Henry Holt & Co., Publishers.) Some are diurnal, as our common butterflies; others are noc- turnal, as the bed-bug; some, crepus
. Principles of economic zoo?logy. Zoology, Economic. INSECTA 113 Habits and Habitat.—Insects vary in their habitat. Most of them are terrestrial, some are aerial, others are aquatic, a few even being marine, while still others are subterranean. iobrum \^( "jj Mandible,^ (^. Fig. 85.—External anatomy of Caloyte'nus spre'tus, the head and thorax disjointed: up, Uropatagium; /, furcula; c, cercus. (Drawn by J. S. Kingsley.) (From Packard's "Zoology," Henry Holt & Co., Publishers.) Some are diurnal, as our common butterflies; others are noc- turnal, as the bed-bug; some, crepuscular, as the moths. Some are solitary; others gregarious, or social, as the ants and bees. Plan of Structure (Fig. 85).—The insect body is divided into three well-marked regions—^the head, thorax, and abdomen. 8. 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 Daugherty, Lewis Sylvester, 1857-; Daugherty, L. S. , Mrs. , 1859-. Philadelphia, London, W. B. Saunders
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