. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 142 THE PLUM CURCULIO. rapidly, tapping the plum. After an instant of greater excitement she suddenly stopped, with body raised, holding the antennsp straight and rigid before her. The slender ovipositor was quickly inserted, the tip of abdomen being bent cephalad for the purpose. Oviposition occurred within 30 seconds. In removing the ovipositor the antennae were lowered partly beneath the fore-body, evidently as a help, and the abdomen quickly arched. (Sigalphus) Triaspis curculionis Fitch. The Sigalphus parasi
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 142 THE PLUM CURCULIO. rapidly, tapping the plum. After an instant of greater excitement she suddenly stopped, with body raised, holding the antennsp straight and rigid before her. The slender ovipositor was quickly inserted, the tip of abdomen being bent cephalad for the purpose. Oviposition occurred within 30 seconds. In removing the ovipositor the antennae were lowered partly beneath the fore-body, evidently as a help, and the abdomen quickly arched. (Sigalphus) Triaspis curculionis Fitch. The Sigalphus parasite of the curcuUo (fig. 26) was first discovered by Dr. Fitch, and a description with figure of the female published in the Country Gentleman for October, 1859 (p. 221), and also in the Albany Cultivator in October of the same year. A more extended account is given in his address '' On the curculio and black laiot on plum trees," delivered l)efore the New York Agricultural Society in 1860. The specimens upon wliich the description was based came from D. W. Beadle, St. f Catherines, Ontario, and had been reared by him from black laiot on plum trees which were iiifested with curculio larva?, the adult curculios appearing in numbers in the rearing jars. The fact that the black Ivnot is also infested by the larvae of other in- sects, es]:)ecially that of the so-called plum moth {Enarmonia prw/nvoro. Walsh), casts doubt on the exact host relations of the Sigalphus. In fact, Walsh in his rejiort as acting entomologist of Illinois ridiculed the idea that the Sigalphus was a parasite of the curculio, and this doubt was not removed until 1870, when Dr. Riley reared the insect in large numbers from curculio larvte placed in jars in carefully sifted earth. Little has been added to our knowledge of this insect since the observations by Riley. Prof. Gillette, in Iowa Station Bulletin 9, page 378, gives some interesting notes on the insect; he found it quite common in the vicinity of Am
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