. Economic entomology for the . A lace-winged fly, Chrysopa oculata.—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 egg is fastened, and we get thus a
. Economic entomology for the . A lace-winged fly, Chrysopa oculata.—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 egg is fastened, and we get thus a little
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Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, bookcentury1800, bookdecade1890, bookpublishernp, bookyear1896
