. Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; . 88 AN ECONOMIC ENTOMOLOGY. and these differ from the preceding in that the front meets the top of the head in an even, obtuse curve. The species are usually long-winged, and the thorax is either crested or rough and tuberculate, with somewhat prominent and sharp angles. Quite usually the hind wings are brilliandy red or yellow and black, sometimes blue, and frequently contrasting in color. To this sub-family belong those species that fly early in spring and have wintere
. Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; . 88 AN ECONOMIC ENTOMOLOGY. and these differ from the preceding in that the front meets the top of the head in an even, obtuse curve. The species are usually long-winged, and the thorax is either crested or rough and tuberculate, with somewhat prominent and sharp angles. Quite usually the hind wings are brilliandy red or yellow and black, sometimes blue, and frequently contrasting in color. To this sub-family belong those species that fly early in spring and have wintered in Fig. 55- an immature stage, ready for the trans- formation to the adult form as soon as the W'eather per- mits. Good ex- Chortophagaviridifascia—a,\\di\b,2,A\x\^. amplCS OI SUCh species are the green-striped locust {Chortophaga viridifascia), which occurs over a large part of the United States, and has the hind wings without strong contrasts ; and the large, red-winged Hippisciis discoideus, which is more southern in its range, not extending north of New Jersey. Species of this kind are most frequent in barren, sandy, or partly desert regions, and few ever become injurious. Among the troublesome forms are the " Carolina locust," Dis- sosteria Carolina, and the long-winged locust, Dissosteria longi- pennis ; the first found throughout the United States, and easily recognized by its large size and the ample, black, yellow-bordered hind wings ; the latter a similar but somewhat longer-winged western species, usually confined to the Rocky Mountain region, but sometimes migrating for considerable distances from their normal breeding-places. These species deposit their eggs in the ground in the fall and the young hatch in the spring. The "Carolina locust" is often met with in late fall, clinging fast to the tops of plants, killed by a fungous disease which ordinarily keeps the species within bounds. It is further con- spicuous by its habit of poising a f
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsects, bookyear1906
