Report of the State Entomologist on injurious and other insects of the state of New York . 1;hing isdevoured except the larger veins,feeding invariably beginning at thetip of the leaf. The presence ofleaves eaten in the above describedways is most characteristic of thisspecies. The larvae attain fullgrowth very quickly and some maybe observed spinning up the latter part of June. The period ofoviposition is quite extended and eggs, young larvae and full-grown larvae may frequently be observed upon the same tree thelatter part of June and into July. A second generation of larvaeoccurs about the
Report of the State Entomologist on injurious and other insects of the state of New York . 1;hing isdevoured except the larger veins,feeding invariably beginning at thetip of the leaf. The presence ofleaves eaten in the above describedways is most characteristic of thisspecies. The larvae attain fullgrowth very quickly and some maybe observed spinning up the latter part of June. The period ofoviposition is quite extended and eggs, young larvae and full-grown larvae may frequently be observed upon the same tree thelatter part of June and into July. A second generation of larvaeoccurs about the middle of August. The full-grown larvae of the. Fig. 1 Poplar sawfly, leaf stem show-ing oviposition and a portion of thestem greatly enlarged. (Original) j 14 NEW YORK STATE MUSEUM first generation may spin their oval, brown cocoons in leaves orother debris. The second generation presumably hibernate in thecocoon, adults appearing the following spring and depositing theireggs in minute slits on either or both sides of the petiole in seriesof 10 to 15 or even more, since Dr Lintner records as many as 28or 30 in one row. Description. The egg is pearly white, oval and about i mm inlength. Its position is indicated by a slight swelling about mmlong, the swellings being about i mm apart. Larva. The young larvae are about 6 mm long, have darkbrown or blackish heads and pale green or yellowish green grown larva. Length i cm. Head subglobose, jet-black,the most of the body being a very pale green with a conspicuousrow of sublateral, subquadrate, black spots, a pair on each anterior portion of the body, namely
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectinsects, bookyear1882
