. The transformations (or metamorphoses) of insects. Insects; Insects; Myriapoda; Arachnida; Crustacea. 394 TRANSFORMATIONS OF INSECTS. The Cecidomyidce are very small Diptera which, like the Cynips, produce galls on pfents in which their larvae live. Nevertheless, there are exceptions to this gall-making peculiarity, for the wheat fly, Cecidomyia tritici^ lays its eggs in the centre of the flower of the wheat plant, and when its larvae are hatched they eat the pollen, and thus prevent the formation of the corn. An American species, which is known by the name of the Hessian Fly, attacks the lo
. The transformations (or metamorphoses) of insects. Insects; Insects; Myriapoda; Arachnida; Crustacea. 394 TRANSFORMATIONS OF INSECTS. The Cecidomyidce are very small Diptera which, like the Cynips, produce galls on pfents in which their larvae live. Nevertheless, there are exceptions to this gall-making peculiarity, for the wheat fly, Cecidomyia tritici^ lays its eggs in the centre of the flower of the wheat plant, and when its larvae are hatched they eat the pollen, and thus prevent the formation of the corn. An American species, which is known by the name of the Hessian Fly, attacks the lower part of the stem of the wheat plant, and the larva. Cecidoniyia with viviparous larv^. nourishes itself with the sap, which it appears to take by suction, and causes the stem to wither and die. A very interesting discovery has been made by Nicholas Wagner, a professor at Kazan, to the eff"ect that the larvae of some species of Cecidomyia which live underneath the bark of trees have the power of producing creatures like unto themselves. In the centre of the engraving there is a representation of the adult insect, and on either side of it drawings of the nymph, and below the larva is depicted, and it will be seen to contain at a a. 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 Duncan, P. Martin (Peter Martin), 1821-1891; Blanchard, Émile, 1819-1900. Metamorphoses . .. des insects. London and New York, Cassell, Petter, and Galpin
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Keywords: ., bookcentury1800, bookdecade1870, booksubjec, booksubjectcrustacea
