. Elementary entomology . 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 cl
. Elementary entomology . 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 aquatic.
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Keywords: ., bookcentury1900, bookdecade1, booksubjectentomology, bookyear1912
