. Instructions in spraying [microform]. Spraying and dusting in agriculture; Agricultural pests; Pulvérisation et poudrage en agriculture; Ennemis des cultures, Lutte contre les. Fig. 17. Fig. Fig. 18. DiPTBRA (Fltea—Ttoo-toinged). TACHiNiDS.~The Tachina flies are larger than house flies. (Figs. 17 and 18.) As valuable as the Ichneumon for parasitizing caterpillars, grasshoppers, etc. Eggs are laid on the surface of caterpillars, and the larvse bore inside. Cut worms are especially attacked by them. Many Tachina fly larvoe prey upon saw-fly larvse. Eriatalis preys upen aphids. Pranachua,

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. Instructions in spraying [microform]. Spraying and dusting in agriculture; Agricultural pests; Pulvérisation et poudrage en agriculture; Ennemis des cultures, Lutte contre les. Fig. 17. Fig. Fig. 18. DiPTBRA (Fltea—Ttoo-toinged). TACHiNiDS.~The Tachina flies are larger than house flies. (Figs. 17 and 18.) As valuable as the Ichneumon for parasitizing caterpillars, grasshoppers, etc. Eggs are laid on the surface of caterpillars, and the larvse bore inside. Cut worms are especially attacked by them. Many Tachina fly larvoe prey upon saw-fly larvse. Eriatalis preys upen aphids. Pranachua, with a long tapering abdomen, feeds upon clover midges. i ^ i m 'til. 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 Ontario. Dept. of Agriculture. [Toronto? : Ontario Dept. of Agriculture]

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectsprayinganddustingin