. Economic entomology for the farmer and fruit-grower. Beneficial insects. 74 AN ECONOMIC ENTOMOLOGY. the farmer. There are several sub-famiUes, which together are termed "lace-winged flies," from their delicate, finely-reticulated or netted wings, which he flat and are not folded. The insects are slight, and in the species allied to Heinerobius the colors are brownish or smoky. They are less common than the forms allied to Chtysopa, which are green, with long antennae and prominent, bright, yellowish-brown eyes, which have given them the name "golden-eyed flies" in some lo
. Economic entomology for the farmer and fruit-grower. Beneficial insects. 74 AN ECONOMIC ENTOMOLOGY. the farmer. There are several sub-famiUes, which together are termed "lace-winged flies," from their delicate, finely-reticulated or netted wings, which he flat and are not folded. The insects are slight, and in the species allied to Heinerobius the colors are brownish or smoky. They are less common than the forms allied to Chtysopa, which are green, with long antennae and prominent, bright, yellowish-brown eyes, which have given them the name "golden-eyed flies" in some localities. They are commonly found in fields or along the edges of woods, and emit, when handled, a peculiarly sickening odor which is quite unmis- takable when once known. In the adult stage the insects feed little or not at all ; but the larvae, known as " aphis lions," feed almost constantly, their prey being small, soft-bodied insects of all kinds, aphids or plant-lice ranking as special favorites. Fig. A lace-winged fly, Chrysopa octdata.—a, the eggs ; b, the larva ; d, same, feeding on a pear-psylla; e, cocoon, from which /, the adult, has escaped ; g, head of adult in front, enlarged. The entire life history of the insects is interesting. The female in ovipositing touches the end of the abdomen to the surface,— usually a leaf,—upon which the eggs are to be laid, and then elevates her body about a quarter of an inch, emitting at the same time a viscid thread which hardens on exposure to the air. At the tip of this the Qg% is fastened, and we get thus a little. 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 Smith, John Bernhard, 1858-1912. Philadelphia and London, J. B. Lippincott company
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbenefic, bookyear1906
