. Elementary entomology. Entomology. I02 ELEMENTARY ENTOMOLOGY and molts for the last time, the adult quickly flying away and leaving the cast skin, which is often found intact and gives an excellent idea of the structure of the nymph, so remarkably unlike the adult in both form and Fig. 132. Dragon-fly {Libelliilaptikhella). (Slightly reduced) A, last nymphal skin ; B, adult. (.Xfter Folsom) Summary of the Nerve-Winged Insects and their Relatives A. With oomplcte metamorphosis: Order N'europtera. Wings equal; numerous cross veins. The dobsons {Sialidae). Larvae aquatic. The aphis-lion
. Elementary entomology. Entomology. I02 ELEMENTARY ENTOMOLOGY and molts for the last time, the adult quickly flying away and leaving the cast skin, which is often found intact and gives an excellent idea of the structure of the nymph, so remarkably unlike the adult in both form and Fig. 132. Dragon-fly {Libelliilaptikhella). (Slightly reduced) A, last nymphal skin ; B, adult. (.Xfter Folsom) Summary of the Nerve-Winged Insects and their Relatives A. With oomplcte metamorphosis: Order N'europtera. Wings equal; numerous cross veins. The dobsons {Sialidae). Larvae aquatic. The aphis-lions {Chrysopidae). Feed on aphides, etc. The ant-lions {Mynneleonidae). Larvae make pits in soil. Order Mecoptera. Scorpion-flies. Elongate head, and tip of abdomen fang- like. Larvae live underground. Order Trichoptera. Caddis-flies. Wings with few cross veins and clothed with hairs. Larvae live in water, many being case bearers. B. With i»e«ntlfrfete metamorphosis {Pseudoneuropterd): Order Ephemerida. May-flies. Fore-wings much larger ; mouth-parts rudi- mentary. Nymphs aquatic. Order Plecoptera. Stone-flies. Hind-wings larger and plaited beneath the fore-wings when at rest. Nymphs aquatic. Order Odonata. Dragon-flies and damsel-flies. Wings about equal in size, with a nodus on the front margin. Nymphs 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; Metcalf Collection (North Carolina State University). NCRS. Boston, Ginn
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Keywords: ., bookcentury1900, bookdecade1, booksubjectentomology, bookyear1912
