. Elementary entomology. Entomology. 90 ELEMENTARY ENTOMOLOGY they may conveniently be considered together and termed '' neu- ropteroid ; True Neuroptera. In the true Nenroptera the wings are usually of equal size, with numerous cross veins, the mandibles are well developed, and the metamorphosis is complete. The larvae are carnivorous, and the mandibles are usually long and pointed. One of the best-known forms is the large hellgramite {Corydahis cor- mitd), whose larvae, known as dobsons, are the favorite bait of the bass fisherman. The larvae live under stones in swift-flowing.
. Elementary entomology. Entomology. 90 ELEMENTARY ENTOMOLOGY they may conveniently be considered together and termed '' neu- ropteroid ; True Neuroptera. In the true Nenroptera the wings are usually of equal size, with numerous cross veins, the mandibles are well developed, and the metamorphosis is complete. The larvae are carnivorous, and the mandibles are usually long and pointed. One of the best-known forms is the large hellgramite {Corydahis cor- mitd), whose larvae, known as dobsons, are the favorite bait of the bass fisherman. The larvae live under stones in swift-flowing. Fig. 114. Cluster of eggs of the lace-winged fly {Chrysopa). (Greatly enlarged) (After S. J. Hunter) streams, where they feed on the young of various aquatic insects. They are readily recognized by the leglike appendages and a large tuft of tracheal gills on either side of each abdominal segment (Fig. 113). It requires nearly three years for the larva to become full grown, when it forms a cell beneath a stone, or some object near the bank, and pupates, the adult appearing about a month later. The adults are readily recognized, as they have a wing ex- panse of from four to five and one half inches and the males have remarkably long mandibles. On the rocks under which the larvae live the eggs are laid in chalklike masses of from two to three 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
