. Class book of economic entomology, with special reference to the economic insects of the northern United States and Canada. Beneficial insects; Insect pests; Insects; Insects. 2 78 ECONOMIC ENTOMOLOGY spinach as a trap crop; plow deep and harrow as soon as crop is removed. Lesser House-fly {Homalomyia canicularis Linn.).—This fly is smaller than Musca domestica, and may be observed in houses in early summer. As an Anthomyiid it can be readily distinguished from the true muscids by the venation of the wings. In this species the middle tibiae are without a tubercle. The larva, )^5 inch long, i
. Class book of economic entomology, with special reference to the economic insects of the northern United States and Canada. Beneficial insects; Insect pests; Insects; Insects. 2 78 ECONOMIC ENTOMOLOGY spinach as a trap crop; plow deep and harrow as soon as crop is removed. Lesser House-fly {Homalomyia canicularis Linn.).—This fly is smaller than Musca domestica, and may be observed in houses in early summer. As an Anthomyiid it can be readily distinguished from the true muscids by the venation of the wings. In this species the middle tibiae are without a tubercle. The larva, )^5 inch long, is markedly different from that of Musca. It has a flattened body with a double row of spiny processes. It lives in waste vegetables and animal matter, and no doubt is responsible. Fig. i8o.—The little house-fly {Homalomyia brevis). Female at left; male next, with enlarged antenna; larva at right. All enlarged. {After Howard.) for the transmission of certain diseases. It becomes full grown in about a week, sometimes prolonged to 3 or 4 weeks. The Little House Fly {Homalomyia brevis Rond.) occurs about outbuildings and breeds in human excrement. It acts, no doubt, as a disease carrier (Fig. 180). The Latrine Fly {Homalomyia scalaris Fab.) is also under suspicion as a carrier of contagion. Middle tibia with a tubercle. TACHINIDiE (TACHINA FLIES) These flies are useful in that the larvag or maggots are parasitic within the bodies of injurious caterpillars. The female tachina fly lays her eggs upon the caterpillar or upon the leaves of the food plant, and the maggots on hatching bore their way through the walls and. 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 Lochhead, William, 1864-. Philadelphia, Blakiston
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsects, bookyear1919
