. Elementary entomology. Insects. CHAPTER XIII THE BUTTERFLIES AND MOTHS (LEPIDOPTERA) Characteristics. Insects with four wings, which are membranous and cov- ered with overlapping scales ; mouth-parts, suctorial; metamorphosis, complete. If the wing of a butterfly or a moth is rubbed, the color is quickly removed as a sort of powder, leaving the transparent membranous wing. If this powder is examined with a microscope, it will be seen to be composed of small, finely ridged scales, which are arranged on the wings in overlapping rows and give it the charac- teristic color pattern. Thus we get t
. Elementary entomology. Insects. CHAPTER XIII THE BUTTERFLIES AND MOTHS (LEPIDOPTERA) Characteristics. Insects with four wings, which are membranous and cov- ered with overlapping scales ; mouth-parts, suctorial; metamorphosis, complete. If the wing of a butterfly or a moth is rubbed, the color is quickly removed as a sort of powder, leaving the transparent membranous wing. If this powder is examined with a microscope, it will be seen to be composed of small, finely ridged scales, which are arranged on the wings in overlapping rows and give it the charac- teristic color pattern. Thus we get the name of the order, from lepis (a scale) and//m?;z (a wing). These scales strengthen the wings and are also found on the body and on other ap- pendages. The mouth-parts of the adults consist of a long, tubelike proboscis, which is coiled under the head when not in use, looking, in some of FIG. 257. Portion of wing of monarch the larger moths, much like a butterfly, with some scales removed to , • T, • i ., . watch spring. It is composed show insertion-pits and their regular ar- rangement. (Greatly magnified) of the two maxillae, the inner (After Kellogg) faces of which are grooved and locked together so as to form a tube, through which the nectar of flowers is sucked. The man- dibles are entirely wanting. The two brushlike organs on either side of the proboscis are the labial palpi, the balance of the labium being poorly developed. The larvae of butterflies and moths are known as caterpillars. They are quite variable in shape, but our common forms are readily recognizable as belonging to this order. They are usually cylindrical, 172. 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 Sanderson, Dwight, 1878-1944; Jackson, C. F. (Cicero Floyd), b. 1882. Boston, New York [etc. ] Ginn and Company
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