. Agricultural entomology for students, farmers, fruit-growers and gardeners. Insects; Beneficial insects; Insect pests. FAMILY MUSCID^ 277 deposit their eggs upon the spider, the larva feeding upon the food intended for the wasp larva or possibly upon the wasp larva itself. The typical Muscid flies {MuscidoB), house fly, blow fly screw-worm fly, all live in organic matter in a state of decay, and all of them show very rapid rate of development, the larvae acquiring their growth in a few days' time, though longer time is usually passed in the pupa stage. The adults may live for a long time. Ho
. Agricultural entomology for students, farmers, fruit-growers and gardeners. Insects; Beneficial insects; Insect pests. FAMILY MUSCID^ 277 deposit their eggs upon the spider, the larva feeding upon the food intended for the wasp larva or possibly upon the wasp larva itself. The typical Muscid flies {MuscidoB), house fly, blow fly screw-worm fly, all live in organic matter in a state of decay, and all of them show very rapid rate of development, the larvae acquiring their growth in a few days' time, though longer time is usually passed in the pupa stage. The adults may live for a long time. House flies, for example, conceal themselves about houses and survive the winter, possibly also as pupse, and deposit eggs which start the summer. Fig. 222.—Common house fly (Musca domestica): puparium at left; adult next; larva and enlarged parts at right. All enlarged. (After Howard, Div. Ent., U. S. Dept. Ag.) generations which follow each other with a great deal of rapidity. Twelve to fifteen days is all that is required for the complete cycle of many of the species. They are scaven- gers and in this may be looked upon as beneficial. They present also certain dangerous aspects as carriers of disease, especially typhoid, and deserve all the opposition they are receiving. The screw-worm fly deposits eggs occasionally in the nostrils of individuals, and in the case of wounds of animals the larvae work into the living tissue. It causes losses in cattle industry in the 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 Osborn, Herbert, 1856-1954. Philadelphia ; New York : Lea & Febiger
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectb, booksubjectinsects
