. Agricultural zoology. Zoology. INSECTS. 169 at harvest time, leave their hiding-places, and let themselves fall to the ground, where the following spring they become pupse, from which midges quickly emerge. Itemedy: After a year in which the insect has caused great damage, the fields must be deeply ploughed in order to kill the larvae, which would otherwise live through the winter. The Wheat Midge {Cecidomyia tritici). Male 5>g inch, female (Fig. 110) ^^ inch, and possess- ing an ovipositor which, when extended, is twice that. Fig. 112.—The Wheat Midge ^Cecidomyia tritici): Li larva in th
. Agricultural zoology. Zoology. INSECTS. 169 at harvest time, leave their hiding-places, and let themselves fall to the ground, where the following spring they become pupse, from which midges quickly emerge. Itemedy: After a year in which the insect has caused great damage, the fields must be deeply ploughed in order to kill the larvae, which would otherwise live through the winter. The Wheat Midge {Cecidomyia tritici). Male 5>g inch, female (Fig. 110) ^^ inch, and possess- ing an ovipositor which, when extended, is twice that. Fig. 112.—The Wheat Midge ^Cecidomyia tritici): Li larva in the contracted, Lit, the same in the extended condition. B, awheat flower: a-y outer, az inner glume ; b, stamens; c, brush-like stigmas ; d, ovary ; Z, larvee of the wheat midge. Li and Lii highly, B less highly, magnified. length. Citron yellow, slightly hairy; antennae blackish, eyes black, legs dirty yellow. In spring or early summer, the midges creep out of the soil in fields where wheat has been planted the previous year. After pairing, the females wander to fields where wheat or, more rarely, rye is growing. The. 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 Bos, Jan Ritzema, 1850-1928; Ainsworth Davis, J. R. (James Richard), 1861-1934. London, Chapman & Hall, Ld.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1894
