. Agricultural entomology for students, farmers, fruit-growers and gardeners. Insects; Insects, Injurious and beneficial. 272 ORDER DIPTERA skin and some time before it is ready to issue. Tlie adults appear quite early in the season and the hirvse in the hacks of cattle are never seen until in the winter time—January first to ]\Iarch or April. They cause the muscles to have a jelly-like consistency. They injure the cattle in regard to growth and to milk conditions. The annoyance of the flies r .-A ^ b. / \ i ' 1 : WfJ ' )It i"4$'$f. Fig. 217.—Hypoderma lineata: a, eggs attached to hair; b
. Agricultural entomology for students, farmers, fruit-growers and gardeners. Insects; Insects, Injurious and beneficial. 272 ORDER DIPTERA skin and some time before it is ready to issue. Tlie adults appear quite early in the season and the hirvse in the hacks of cattle are never seen until in the winter time—January first to ]\Iarch or April. They cause the muscles to have a jelly-like consistency. They injure the cattle in regard to growth and to milk conditions. The annoyance of the flies r .-A ^ b. / \ i ' 1 : WfJ ' )It i"4$'$f. Fig. 217.—Hypoderma lineata: a, eggs attached to hair; b, c, d, dorsal, ventral, and lateral view of egg; e, embryonic or first larva, as seen in egg; /, fir, mouth parts of same enlarged; h, anal segments of same'still more enlarged. (From Insect Life.) when they deposit eggs and also the injury caused by their presence in the back of the cattle is in England estimated at about a head. Eggs are attached to the hairs, and the larvae, according to Curtice, pass into the mouth and through the esophagus and through its walls into the adja- cent tissue and migrate by slow degrees to the dorsal portion of the body, finally reaching the subcutaneous tissue along. 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, booksubjectinsects, bookyear1916
