. The Cattle grubs or ox warbles, their biologies and suggestions for control. Warble flies; Cattle; Insect pests. Fig. 19. -Dorsal view of adult male of Hvpodenna Uneatum. Much enlarged. them. These hosts were kept securely muzzled throughout the season when flies were likely to be about, except for the time that they were being fed, when they were placed in specially constructed stanchions which would not allow them to. lick any part of themselves. The muzzles used were made of heavy wire, ex- tending well up the nose and covered with closely woven ducking, except for two small holes above t
. The Cattle grubs or ox warbles, their biologies and suggestions for control. Warble flies; Cattle; Insect pests. Fig. 19. -Dorsal view of adult male of Hvpodenna Uneatum. Much enlarged. them. These hosts were kept securely muzzled throughout the season when flies were likely to be about, except for the time that they were being fed, when they were placed in specially constructed stanchions which would not allow them to. lick any part of themselves. The muzzles used were made of heavy wire, ex- tending well up the nose and covered with closely woven ducking, except for two small holes above the nostrils. As will be seen by ref- erence to Table I, dur- ing 1917 three animals (Xos. 164, 169, and 176) were infested by allow- ing flies to oviposit on them. One of these re- ceived the eggs on the heels and thigh, another on the legs, shoulder, and neck, and the third on the back. In each of these a considerable num- ber (45, 27, and 10, respectively) of grubs came to the subdermal tissue and cut holes through the skin of the back the following fall and winter. Another animal (Xo. 171) was given, by way of the m o u t h , 36 newly hatched larva? and 82 eggs which were about ready to hatch. Nine of these larva? were ad- ministered down the throat in a capsule. Xo grubs appeared on the back of this animal during the fall and winter, although it was shown that it was a favorable host by the fact that it had a good infestation during the previous year. In 1918 three ani- mals were used, two of these (Xos. 212 and 217) receiving infestations on the heels and one (Xo. 211) by way of the mouth. Both of those having eggs de-. Dorsal view of adult female of Hypodcrma bo vis. Much enlarged. 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 Bishopp, F. C. (Fred Corry), 1884-1970. Washington, D. C. : U. S. Dept. of
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Keywords: ., bookcentury1900, bookdecade1920, booksubj, booksubjectinsectpests
