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Identifier: journalofagricul06unit (find matches)
Title: Journal of agricultural research
Year: 1913 (1910s)
Authors: United States. Dept. of Agriculture Association of American Agricultural Colleges and Experiment Stations Association of Land-Grant Colleges and Universities Association of Land-Grant Colleges
Subjects: Agriculture -- United States
Publisher: Washington, U.S. Govt. Printing Office
Contributing Library: The LuEsther T Mertz Library, the New York Botanical Garden
Digitizing Sponsor: The LuEsther T Mertz Library, the New York Botanical Garden

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the cones were still young and soft.In fact, after the cones become hardened it is difficult to realize how theycan become infested at all by the chalcidids. Actual oviposition in the field by the seed chalcidids was observed onlyonce—on May 28 by Entomological Ranger J. B. Patterson. Whilecollecting cones he noted a female on one cone with her ovipositorinserted. The insect withdrew the ovipositor and left the cone very soonafter it was noticed. PLATE VOviposition of Megastigmus spermotrophus in the cones of Douglas fir: Fig. I.—Type of cage in which the oviposition of Megastigmus spermotrophus wasobserved. This cage was kept under outdoor conditions. A branch bearing youngcones of Douglas fir was set in a jar of moist soil and kept in the cage with the females. Fig. 2, 3.—Female resting on cone with ovipositor inserted. Photographed fromlife. On left, original; on right, enlargement of same to show exact attitude of thefemale. Oviposition of Mee:astigmus spermotrophus Plate V
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Journal of Agricultural Research Vol. VI. No. 2 Oviposition of Megastigmus spermotrophus Plate VI

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United States. Dept. of Agriculture; Association of American Agricultural Colleges and Experiment Stations; Association of Land-Grant Colleges and Universities;

Association of Land-Grant Colleges
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(Reusing this file)		 At the time of upload, the image license was automatically confirmed using the Flickr API. For more information see Flickr API detail.
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1916
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29 July 2014


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