. A textbook in general zoology. Zoology. OTHER MEMBERS OF THE CLASS — INSECTA 171. Fig. 109. —American locust. states, while the great American locust is conspicuous in the southern states (Fig. 109). Locusts produce their sounds in two different ways. Some species rub the hind legs, while at rest, across a ridged vein on the outer surface of the first pair of wings. Other species, while in flight, rub or strike together the upper surface of the front edge of the hind wings and the under surface of the fore wings. This produces a loud, sharp, clacking sound. Some species lay their eggs in the
. A textbook in general zoology. Zoology. OTHER MEMBERS OF THE CLASS — INSECTA 171. Fig. 109. —American locust. states, while the great American locust is conspicuous in the southern states (Fig. 109). Locusts produce their sounds in two different ways. Some species rub the hind legs, while at rest, across a ridged vein on the outer surface of the first pair of wings. Other species, while in flight, rub or strike together the upper surface of the front edge of the hind wings and the under surface of the fore wings. This produces a loud, sharp, clacking sound. Some species lay their eggs in the fall and some in the spring. The eggs are laid sometimes in the ground and sometimes in logs, stumps, rails, etc. The crickets possess long, slender antennae which are un- like the shorter and stouter ones of the common locust. The large veins at the bases of the wing covers of the males are ridged some- what like a file (Fig. 110). When "chirping," or "shrilling," the cricket elevates the wing covers at an angle of about forty-five degrees and rubs one against the other where the ridged veins are, thus throwing them into vibration and producing the noise. Only the male sings. The katydids usually possess large green wing covers which resemble closely the leaves of trees in which these insects live. Katydids, Uke the crickets, possess long, delicate antennae, and the males make their peculiar noise in the same manner as the crickets (Fig. 111). Fig. 110. — Large vein at the base of a crick- et's wing. Enlarged to show the filelike 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 Herrick, Glenn W. (Glenn Washington), 1870-1965. New York, Cincinnati [etc. ] American Book Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1912
