File:The grape leafhopper in the Lake Erie Valley (1914) (14597646050).jpg

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Description
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Identifier: grapeleafhopperi19john (find matches)
Title: The grape leafhopper in the Lake Erie Valley
Year: 1914 (1910s)
Authors: Johnson, Fred
Subjects: Grapes Diseases and pests Grape leaf-hopper
Publisher: Washington, D.C. : U.S. Dept. of Agriculture
Contributing Library: U.S. Department of Agriculture, National Agricultural Library
Digitizing Sponsor: U.S. Department of Agriculture, National Agricultural Library

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Text Appearing Before Image:
Fig. 12.— Anal segments of male grapeIr-v.:i::rr er a~ i ir~.-j.Ls: z. xzL~i seg-ments; 6, genital nooks; c, superiorclasper: d, inferior clasper. Greatly Bui. 1 9, U. S. Dept. of Agriculture. Plate I.
Text Appearing After Image:
The Grape Leafhopper. The five nymphal stages and adult of the grape leafhopper (Typhlocyba comes): a, First stage;b, second stage; c, third stage; d, fourth stage; e, fifth stage; /, adult with wings spread. Allgreatly enlarged. (Original.) THE GRAPE LEAFHOPPER IN THE LAKE EEIE VALLEY. 17 From this date on, the adults confine their feeding and other activi-ties to the foliage of the cultivated grapevine. About this time thered marking on the elytra disappears and is replaced by a light lemon-yellow. After the adults once settle down on the foliage of the vinesin the vineyards there is very little evidence of further migration, andthey seldom leave the shelter of the vines except when disturbed, inwhich case they fly but a short distance and return almost imme-diately to the underside of the grape foliage. On bright, warm daysthey become very active on the slightest disturbance of the vine,whereas on cold wet days it is with the greatest difficulty that theyare dislodged from the unde

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https://www.flickr.com/photos/internetarchivebookimages/14597646050/

Author Internet Archive Book Images
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Flickr tags
InfoField
  • bookid:grapeleafhopperi19john
  • bookyear:1914
  • bookdecade:1910
  • bookcentury:1900
  • bookauthor:Johnson__Fred
  • booksubject:Grapes_Diseases_and_pests
  • booksubject:Grape_leaf_hopper
  • bookpublisher:Washington__D_C____U_S__Dept__of_Agriculture
  • bookcontributor:U_S__Department_of_Agriculture__National_Agricultural_Library
  • booksponsor:U_S__Department_of_Agriculture__National_Agricultural_Library
  • bookleafnumber:18
  • bookcollection:usda-bulletin
  • bookcollection:usdanationalagriculturallibrary
  • bookcollection:fedlink
  • bookcollection:americana
Flickr posted date
InfoField
30 July 2014

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