. Introduction to zoology; a guide to the study of animals, for the use of secondary schools;. FIG. Ihieola, white-lined horse-fly. X Photo, byW. H. C. P. FIG. 7. — Chrysops, handed horse-fly. X Photo, by W. H. C. P. The black-flies (Simuliidse r) are representatives of thelong-horned flies (Nematocera). They are familiar pestsin the forests of our Northern country. The females, whichalone suck blood, occur in such num-bers and are so active that they rendercertain places almost uninhabitable toman. Their bite often produces wide-spreading and painful inflammation,accomp
. Introduction to zoology; a guide to the study of animals, for the use of secondary schools;. FIG. Ihieola, white-lined horse-fly. X Photo, byW. H. C. P. FIG. 7. — Chrysops, handed horse-fly. X Photo, by W. H. C. P. The black-flies (Simuliidse r) are representatives of thelong-horned flies (Nematocera). They are familiar pestsin the forests of our Northern country. The females, whichalone suck blood, occur in such num-bers and are so active that they rendercertain places almost uninhabitable toman. Their bite often produces wide-spreading and painful inflammation,accompanied by swelling (Fig. 68).The larvse are aquatic. The Southernblack-fly or buffalo gnat sometimescauses the death of domestic animals. The gall-gnats (Cecidomyidse 2) areminute flies which lay eggs on plants. The larva? maketheir way into the plant tissue, and cause the further de-velopment of the tissue to be abnormal, so that excrescences
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1900
