. Circular. Insect pests; Insect pests. (fig. 2) is reddish, with black hairs on the hark of each segment. The abdomen of the male (fig. 3) terminates with a pair of clasping organs, while that of the female is provided with a long, pointed, extensile ovipositor, about twice as long as the remainder of the body. The egg is only about one one-hundredth of an inch long, oval, about three times as long as broad, pale yellow when first deposited, but becoming tinted with orange as it nears hatching. The larva (fig. 4) when full grown is about one- twentieth of an inch long, footless, ranging in co
. Circular. Insect pests; Insect pests. (fig. 2) is reddish, with black hairs on the hark of each segment. The abdomen of the male (fig. 3) terminates with a pair of clasping organs, while that of the female is provided with a long, pointed, extensile ovipositor, about twice as long as the remainder of the body. The egg is only about one one-hundredth of an inch long, oval, about three times as long as broad, pale yellow when first deposited, but becoming tinted with orange as it nears hatching. The larva (fig. 4) when full grown is about one- twentieth of an inch long, footless, ranging in color from nearly white to orange- red, according to age. The pupa is pale orange in color, with brown eyes. On the front of the head are two short, conical tubercles, and behind them two long bristles. The sheaths inclos- ing the antenna' are curved outward like the handles of an urn. LIFE HISTORY. The pupa is inclosed in a compressed, tough, oval silken cocoon, and when the fly is ready to emerge the pupa pushes itself out of this cocoon to the surface of the ground. It is within the cocoon that the winter is passed, and the time in spring when it conies forth as an adult varies with the hititude and season, probably closely corresponding to the heading of red clover. After pairing, the female proceeds to deposit her eggs in the clover head, pushing them beneath the bracts or enveloping leaves, or down between, but not fastening them in any way to the seed capsule, and in no case, so far as observed, within the florets. Although deposited singly, Professor Comstock reports as many as 50 eggs in a single head. In hatching, the larva must make its own way into the open end of the floret, which offers only sufficient quarters for one individual. In this floret it feeds, and from it, when full grown, it makes its exit and. Fig. 3.âThe clover-flower midge (Dasyneura legumini- cola): a, enlarged dorsal view of male with scales de- nuded; b. head; <â . genitalia; </. antenna]
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsectp, bookyear1904
