Bulletin Volume 104-113

Bulletin Volume 104-113

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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. 1911 edition. Excerpt: ... unfavorable weather. At Logan, Utah, wheat fields were apparently free from leafhoppers but the weather was too cold to favor their activity. Several species, however, were found active among the native grasses and larvae of Deltocephalus and Cicadula were quite plentiful in some places. At Grand Junction, Colo., April 17, jassids were active in alfalfa and the wild grasses of the locality. At Pueblo, Colo., several species were found in bluegrass, the most abundant being Deltocephalus qflinfis. In the wild plains, grasses of several species were common and Athysanella very abundant. At Colorado Springs, Colo., April 20, on the native grasses leafhoppers were swarming by millions, a number of different species being represented. The conditions at Fort Collihs, Colo., April 22, were very similar although cold and high wind made the collection somewhat smaller. In central Kansas, near Delphos, April 24 to 28, jassids occurred in great abundance in the native grasses, but were scarce in the wheat and other cultivated crops. A short trip in northern Michigan to determine the range of certain species was made in the latter part of June, collections being made at Detroit, Mackinac Island, Sault Sainte Marie, and St. Ignace, most of the time being spent at the "S00." Deltocephalus abdomivmlis occurred here in large numbers, both larva'. and adults being taken. D. a_fl'i'n/is, Oicadula 6-notata, and other species were abundant. SYSTEMATIC POSITION OF LEAFHOPPERS. The insects which are commonly known as leafhoppers are included in the group of bugs, Hemiptera, and in thesuborder Homoptera, which includes among other forms the cicadas, plant-lice or aphides, and the scale insects. The name is applied more strictly to the...show more

Product details

  • Paperback | 392 pages
  • 189 x 246 x 21mm | 699g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236860446
  • 9781236860446