. A treatise on some of the insects injurious to vegetation . Insect pests. 614 DIPTERA. mented and enraged by them as to become entirely ungov- ernable in harness. The name of this kind of fly is Stomoxys M , 270 calcitrans (Fig. 270) ; the first word, signifying sharp-mouthed, and the second kicking, given to, the fly from the effect it produces on horses. It lays its eggs in dung, where its young are hatched, and pass through their transformations. The larvae and pupae do not differ much in appearance from those of common. house-flies. The next three flies have feathered bristles on their a
. A treatise on some of the insects injurious to vegetation . Insect pests. 614 DIPTERA. mented and enraged by them as to become entirely ungov- ernable in harness. The name of this kind of fly is Stomoxys M , 270 calcitrans (Fig. 270) ; the first word, signifying sharp-mouthed, and the second kicking, given to, the fly from the effect it produces on horses. It lays its eggs in dung, where its young are hatched, and pass through their transformations. The larvae and pupae do not differ much in appearance from those of common. house-flies. The next three flies have feathered bristles on their an- _. ââ, tennas. The first of them, a large, Fig. 271. â _ ' ° ' buzzing, and stinking meat-fly, named Musca (Oalliphora) vomitoria (Fig. 271), is of a blue-black color, with a broad, dark blue, and hairy hind body. It is found all summer about slaughter- houses, butchers' stalls, and pantries, which it frequents for the purpose of laying its eggs on meat. The eggs are com- monly called fly-blows ;⢠they hatch in two or three hours after they are laid, and the maggots produced from them come to their growth in three or four idays, after which they creep away into some dark crevice, or burrow in the ground, if they can get at it, turn to egg-shaped pupa?, and come out as flies, in a few days more; or they remain unchanged through the winter, if they have been hatched late in sum- mer. A smaller fly, of a brilliant blue-green color, with black legs, also lays its eggs â on meat, but more often on dead animals in the fields. It seems hardly to differ from the Musoa (iMcilia) Ocesar of Europe. The house-fly of this country has been supposed to be the same as the European Musoa domestica; but I cannot satisfy myself on this point for the want of specimens from Europe. It is possible that our sharp-biting, stable-flies, the meat-flies, and the house-fly, may really be distinct species from those which are found in Europe. Our house-fly. is the Musca 2, or Harpy-fly,
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