Economic entomology for the farmer Economic entomology for the economicentomolo00smit_0 Year: 1896 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 green-striped locust (yCIiort
Economic entomology for the farmer Economic entomology for the economicentomolo00smit_0 Year: 1896 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 green-striped locust (yCIiortophaga viridifascid), 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 few feet from the surface, and making a continuous ' whirring' or rasping sound. The sub-family Acridiince is one of great extent, containing those grasshoppers that have become famous by their evil deeds, Chortophaga viridifascia-—a, larva ; b, a
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