Elementary entomology ([c1912]) Elementary entomology elementaryentomo00sand Year: [c1912] FLIES, MOSQUITOES, AND MIDGES 241 have the merest rudiments of wing-pads. The posterior legs are strongly developed, so that they are able to jump a considerable distance. In the adult stage they live upon various warm-blooded animals, sucking their blood. The eggs are scattered about in the sleeping places of domestic animals and in the cracks of floors. The larvae are wormlike creatures, with a distinct head, but without legs. They have biting mouth-parts, and feed upon particles of decaying animal an
Elementary entomology ([c1912]) Elementary entomology elementaryentomo00sand Year: [c1912] FLIES, MOSQUITOES, AND MIDGES 241 have the merest rudiments of wing-pads. The posterior legs are strongly developed, so that they are able to jump a considerable distance. In the adult stage they live upon various warm-blooded animals, sucking their blood. The eggs are scattered about in the sleeping places of domestic animals and in the cracks of floors. The larvae are wormlike creatures, with a distinct head, but without legs. They have biting mouth-parts, and feed upon particles of decaying animal and vegetable matter always abundant in the places in which they live. The full-grown larva spins a cocoon in which the pupal stage is passed. In view7 of these habits, in addition to cleansing domestic animals it is also necessary to thoroughly clean the sleeping places of cats and dogs, to scrub the floors, and to treat large cracks, in which rubbish may accumulate, with gasoline, kerosene, or a similar contact insecticide. In temperate climates the common species which lives upon dogs and cats is the only one often troublesome to human beings ; in the tropics fleas are much more abundant, and attack man as well as the domestic animals. C FIG. 384. Cat and dog flea (Ctenocephalus cam's). (Much enlarged) <?, egg; b, larva in cocoon ; r, pupa; d, adult; e, mouth-parts from side; /, antenna; g, labium from below. (After Howard, United States Department of Agriculture)
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