. Animal parasites and human disease. Insects as carriers of disease; Medical parasitology. CUTANEOUS MYIASIS 513 mals. Its bite is more i)ainful to iirnn tli;iii is tliat of the nonnal hunuui parasite. The attaeks of the flooi- ma^^ot can very easily be avoided by sleeping on mats or beds raised just a few inches from the ground. Maggots Under the Skin There are several species of tlies in which the larva? develop under the human skin, like " warbles " in cattle, but they are found only in Africa and in tropical America. The African species are closely related to the blowflies and f
. Animal parasites and human disease. Insects as carriers of disease; Medical parasitology. CUTANEOUS MYIASIS 513 mals. Its bite is more i)ainful to iirnn tli;iii is tliat of the nonnal hunuui parasite. The attaeks of the flooi- ma^^ot can very easily be avoided by sleeping on mats or beds raised just a few inches from the ground. Maggots Under the Skin There are several species of tlies in which the larva? develop under the human skin, like " warbles " in cattle, but they are found only in Africa and in tropical America. The African species are closely related to the blowflies and fleshflics, whereas the American species, of which there is usually believed to be but a single one, is a true botfly, closely allied to the ox Fig. 245. .\(hilt of South American skin maggot, Dermatobia hominin. X 2. (After Castellani and Chalmers.) Dermatobia. — The American species, sometimes called the human botfly, Dermatobia hominis (Fig. 245), is found through- out tropical America from Mexico to northern Argentina. Its larvse develop not only in man but also in many other animals, as dogs, cattle, mules, hogs, etc. In certain parts of South America the hides of cattle become so riddled with the perfora- tions made by these bots that they are rendered quite worthless. The infestation in man is contracted chiefly in forest regions, and apparently very seldom in houses, a fact which possibly accounts for the greater degree to which dogs are parasitized by it than are cats, and men than women or young children. The adult fly (Fig. 245) is about the size of a blowfl}' (half an inch in length) with face and legs yellowish, thorax bluish black with a grayish bloom, and the abdomen a beautiful metallic. 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 Chandler, Asa Crawford, 1891-1958. New York J. W
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmedical, bookyear1918
