. Annual report of the Regents. New York State Museum; Science. 748 NEW YORK STATE MUSEUM young had not begun to appear May 29. The young may be expected in the latitude of Yonkers about the middle of May and later; and thorough spraying at intervals of about a week, as long as the young appear, with kerosene emulsion, diluted with nine parts of water, will probably be found very effective in checking this pest. Aim to cover every part of the infested tree with the insecticide. The small Lecanium nigrofasciatum Perg. has proved a rather serious enemy to soft maples in Albany. This scale insect
. Annual report of the Regents. New York State Museum; Science. 748 NEW YORK STATE MUSEUM young had not begun to appear May 29. The young may be expected in the latitude of Yonkers about the middle of May and later; and thorough spraying at intervals of about a week, as long as the young appear, with kerosene emulsion, diluted with nine parts of water, will probably be found very effective in checking this pest. Aim to cover every part of the infested tree with the insecticide. The small Lecanium nigrofasciatum Perg. has proved a rather serious enemy to soft maples in Albany. This scale insect has been so abundant on some small trees as nearlv. Fig. 19 Pseudococcus aceris: a adult female; & antenna of same; c adult male; d young larva; cantenna of same—a, c, d greatly enlarged; b, e still more enlarged. (After Howard, Insect life. 1894. 7 : 237) to cover the under surface of the limbs, and so much honeydew was exuded that the walks beneath were kept moist. The severe drain on the trees prevented much growth and resulted in killing a number of the smaller limbs. Badly infested twigs have a marked sour, semiputrid odor due in all probability to the decomposition of the honeydew. Young began to appear in Albany about June 14, and by July 15 they were about .5 mm long and were thickly set on the smaller twigs (pi. 4, fig. 2).. 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 New York State Museum; University of the State of New York. Board of Regents. Albany : J. B. Lyon, State Printer
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Keywords: ., bookauthorne, bookcentury1800, bookdecade1880, booksubjectscience
