. Economic entomology for the farmer and fruit-grower [microform] : and for use as a text-book in agricultural schools and colleges. Beneficial insects. 44 AN ECONOMIC ENTOMOLOGY. and so keen is this sense that they discover the presence of the female, even when confined in a breeding-cage, if a window be left open. Sometimes male wood-borers will sit around a spot on the bark for a considerable time awaiting the emergence of a female, which their keen sense tells them is fully developed and ready to make her way out. Carrion feeders discover their food when con- cealed from sight, and almost
. Economic entomology for the farmer and fruit-grower [microform] : and for use as a text-book in agricultural schools and colleges. Beneficial insects. 44 AN ECONOMIC ENTOMOLOGY. and so keen is this sense that they discover the presence of the female, even when confined in a breeding-cage, if a window be left open. Sometimes male wood-borers will sit around a spot on the bark for a considerable time awaiting the emergence of a female, which their keen sense tells them is fully developed and ready to make her way out. Carrion feeders discover their food when con- cealed from sight, and almost before decay has set in. So far as we have been able to ascertain, the olfactory organs are situated in the antennae, and form small pits or depressions, from which usually arise specialized hairs, bristles, or pegs, as the case may be. Fig. Sensory organs of insects.—A, sensory pittings in plant-louse antennas; B, organ of smell in May-beetle; C, same in wasp; D, sensory organs in Ternies flavipes; E, JF, organs of taste in a wasp ; G, organ of smell in grasshopper ; H, sensory depressions on the tibia of Ternies: I, terminal joint of antenna of an ant; K, section through the antenna of a honey-bee, showing supposed olfactory organs. All greatly enlarged. The sense of touch is located popularly, and I think correctly, in the antenna; ; but it is quite certain that tactile hairs exist all over the body of the insect, more developed in some than in others, and most, perhaps, in larval forms. These structures always consist of specialized hairs or bristles, and end in a nerve 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 Smith, John Bernhard, 1858-1912. Philadelphia : J. B. Lippincott Co.
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