The Shipley Collection of Scientific Papers Volume 235

The Shipley Collection of Scientific Papers Volume 235

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1920 edition. Excerpt: ... Kelsey, Stenographer. Entomology. W. E. Britton, Ph.d., Entomologist; State Entomologist. B. H. Walden, B.agr., M. P. Zappb, B.S., 1 Assistant Philip Garman, Ph.d., 'Entomologists. John T. Ashworth, Deputy in Charge of Gipsy Moth Work. Samuel T. Sealy, Deputy in Charge of Mosquito Control. Miss Gladys M. Finley, Stenographer. Forestry. Walter O. Fillet, Forester A. E. Moss, M.F., Assistant. H. W. Hicock, M.F., Assistant. Miss Pauline A. Merchant, Stenographer. Plant Breeding. Donald F. Jones, S.D., Plant Breeder. P. C. Mangelsdorf, Assistant. Press Of The Wilson H. Lee Company. or Spittle-Bug (Philaenus lirwatus Linnaeus) Order Hemiptera Family Cercopidae By Philip Garman, Ph.d. Frog-hopper or spittle-bug balls are often observed on shrubbery or herbaceous plants, in waste or uncultivated fields. Those of the grass-feeding species are especially noticeable in meadows and may cause persons not acquainted with them to speculate--often blindly--concerning their probable nature. Such speculations are mainly confined to the belief in "frog-spit" and "snake-spit," though occasionally we find people who think them the young of grasshoppers. The term "frog-hopper," which has grown out of the unfounded belief that spittle balls are voided by tree-frogs, is not inappropriate when applied to the adult bug because of its squat appearance and hopping ability. In favorable locations frog-hoppers may become abundant and no doubt do considerable damage. In one instance the writer counted fourteen balls on grass plants within a square foot, which shows the relative abundance of frog-hoppers under some conditions. About New Haven they do not become sufficiently numerous to do serious damage, but they contribute to the sum...
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Product details

  • Paperback | 118 pages
  • 188.98 x 246.13 x 6.35mm | 226.8g
  • United States
  • English
  • black & white illustrations
  • 1236776771
  • 9781236776778