. Elements of zoology, to accompany the field and laboratory study of animals. Zoology. Fig. SG. â Tahatuis lineola, whitn- lined horse-fly. X Photo, by W. H. C. P. Pig. 87. fly. ;â â ChrysojK, banded horse- Photo, by almost uninhabitable to man. Their bite often produces â¢\vide-spreading and painful inflammation, accompanied by swelhng (Fig. 88). The larvse are aquatic. The Southern black-flj' or " l)uffalo-gnat " sometimes causes the death of domestic animals. The gall-gnats are minute flies which lay eggs on plants. The larvae make their way into the plant ti
. Elements of zoology, to accompany the field and laboratory study of animals. Zoology. Fig. SG. â Tahatuis lineola, whitn- lined horse-fly. X Photo, by W. H. C. P. Pig. 87. fly. ;â â ChrysojK, banded horse- Photo, by almost uninhabitable to man. Their bite often produces â¢\vide-spreading and painful inflammation, accompanied by swelhng (Fig. 88). The larvse are aquatic. The Southern black-flj' or " l)uffalo-gnat " sometimes causes the death of domestic animals. The gall-gnats are minute flies which lay eggs on plants. The larvae make their way into the plant tissue, and cause the further development of the tissue to be abnormal, so that excrescences or galls are F'g- SS. â Simuiium, produced. The galls are formerl only in i a r g e d. Fro m growing tissue such as the tips of branches, Paekai-d. buds of flowers or gromng leaves, and are less striking on the whole than the galls of Hemijitera (Tig. 89). A certain kind of gall-fly, called Hessian-fly (Fig. 90), is extremely injurious to wheat because it infests wheat seedlings and so weakens them that they produce no grain. Other minute gnats or midges are destructive to clover in the United States, either. 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 Davenport, Charles Benedict, 1866-1944; Davenport, Gertrude Anna Crotty, 1866- joint author. New York, Macmillan
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1911
