. Insect pests of farm, garden and orchard . hn.): a,eggs—enlarged; h, nymphs, more enlarged; d, adults seen from aboveand below—enlarged; e, head and beak of same; /, parasite of eggs—enlarged; bugs and eggs (a) on leaf, natural size. (After W. G. Johnson.) it is variously called, for the past generation. A native ofMexico and Central America, it migrated into Texas about 1864 ? Murgantia histrionica Hahn. Family Pentatomidoe. See F. H. Chitten,den, Circular 103, Bureau Entomology, U. S. Dept. Agr.; R. I. Smith,Journal Economie Entomology, Vol, II, p. 108, INJURIOUS TO CABBAGE AND CRUCIFEROUS
. Insect pests of farm, garden and orchard . hn.): a,eggs—enlarged; h, nymphs, more enlarged; d, adults seen from aboveand below—enlarged; e, head and beak of same; /, parasite of eggs—enlarged; bugs and eggs (a) on leaf, natural size. (After W. G. Johnson.) it is variously called, for the past generation. A native ofMexico and Central America, it migrated into Texas about 1864 ? Murgantia histrionica Hahn. Family Pentatomidoe. See F. H. Chitten,den, Circular 103, Bureau Entomology, U. S. Dept. Agr.; R. I. Smith,Journal Economie Entomology, Vol, II, p. 108, INJURIOUS TO CABBAGE AND CRUCIFEROUS CROPS 369 and then spread eastward along the (!ulf Coast, and northwarduntil it reached Maryland and Virginia, about 1880, NewJersey in the early 90s, and up the Mississippi Valley to southernOhio and Indiana by 1890. On the Pacific Coast it is found insouthern California and Nevada. Although it spread to LongIsland, N. Y., southern Pennsylvania, and northern Ohio, andIndiana, its advance was checked by the cold winters of the late. Fig. 268.—Field of cabbage in Delaware ruined by the harlequin bug. 90s and it will probably never become very injurious north ofthe Potomac and Ohio rivers. The appearance of the gayly colored bugs, shining black ordeep blue, marked with brilliant red or orange, as shown inFig. 267, is so distinctive that they are readily recognized, andgiven them the name of harlequin-bug or calico-back. Theyare about one-half inch long, flattened, and the general shapeand markings have given them the local name of terrapinbug. The bugs suck the sap from the leaves of cabbage and other 370 INSECT PESTS OF FARM, GARDEN AND ORCHARD erucifcrs, the plants wilting and dying, and turning black as ifthey had been swept by fire; hence the name fire-bug. Ahalf-dozen of the adult bugs will destroy a small plant in a dayor two, and as they frequently appear in enormous numl)ers andas they multiply rapidly, unless they are fought vigorously theywill soon destroy a la
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