. A manual for the study of insects. Insects. Fig. 140, a.—Head of an'iieter- opterous insect. Fig. 140, h. — Head of an homopterous insect. the adults more or less closely in form, and the wings being gradually developed at successive molts. This order includes three well-marked groups, which are ranked as suborders. The first of these, the Heteroptera, includes the true bugs. They are placed first, as we believe they resemble the ancient Hemiptera—the first to appear on the earth—more closely than the members of either of the other suborders. The second suborder, the Parasitica, in- cludes t
. A manual for the study of insects. Insects. Fig. 140, a.—Head of an'iieter- opterous insect. Fig. 140, h. — Head of an homopterous insect. the adults more or less closely in form, and the wings being gradually developed at successive molts. This order includes three well-marked groups, which are ranked as suborders. The first of these, the Heteroptera, includes the true bugs. They are placed first, as we believe they resemble the ancient Hemiptera—the first to appear on the earth—more closely than the members of either of the other suborders. The second suborder, the Parasitica, in- cludes the lice. These insects are much lower in structure than the Heteroptera; but we believe that this simplicity in structure is a result of degradation due to parasitic habits, and therefore really represents a later development than that shown by the Heteroptera. In other w^ords, the lice are probably descendants of some ancient form resembling some of the existing Heteroptera. Among the Heteroptera the bedbug exhibits a similar downward tendency. The third suborder, the Homoptera, includes some forms that. 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 Comstock, John Henry, 1849-1931; Comstock, Anna Botsford, 1854-1930. joint author. Ithaca, N. Y. , Comstock Pub. Co.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectinsects, bookyear1895
