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File:Cydia youngana (Kearfott) (Lepidoptera- Tortricidae) and associates in Engelmann spruce cones, Fraser Experimental Forest, Colorado 1974-1977 (IA IND81050371).pdf

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Cydia youngana (Kearfott) (Lepidoptera: Tortricidae) and associates in Engelmann spruce cones, Fraser Experimental Forest, Colorado 1974-1977   (Wikidata search (Cirrus search) Wikidata query (SPARQL)  Create new Wikidata item based on this file)
Author
Schmid, J.M
Mitchell, J.C
Stevens, R.E
image of artwork listed in title parameter on this page
Title
Cydia youngana (Kearfott) (Lepidoptera: Tortricidae) and associates in Engelmann spruce cones, Fraser Experimental Forest, Colorado 1974-1977
Series title U.S.D.A. Forest Service research note RM
Volume RM-RN-394
Description
8 ref
Abstract: Insect-caused seed loss in Engelmann spruce (Picea engelmannii Parry) varied from 13% to 33% between 1974 and 1977. The primary seed-eating insects were a spruce seedworm, Cydia (=Laspeyresia) youngana (Kearfott), and an unidentified species of fly, possibly a Hylemya, found only in the larval stage. Twenty other species were found associated with the cones. In 1975 the flight period of C. youngana, determined form light trap catches, peaked around June28. About 45% of each C. youngana generation adults did not emerge until at least the second year after completing their development. An undescribed species of Elfia, a tachinid, parasitized C. youngana. Because damaged cones cannot be differentiated from sound cones, seed collectors should consider the amount of potential damage when determining their needs

Subjects: Tortricidae; Picea engelmannii
Language English
Publication date 1981
publication_date QS:P577,+1981-00-00T00:00:00Z/9
Current location
IA Collections: usda-usfsintermountainregion; usdanationalagriculturallibrary; fedlink; americana
Accession number
IND81050371
Notes No copyright page found. No table-of-contents pages found.
Authority file  OCLC: 1038352494
Source
Internet Archive identifier: IND81050371
https://archive.org/download/IND81050371/IND81050371.pdf
Permission
(Reusing this file)		 The contributing institution believes that this item is not in copyright.

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Public domain
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
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current00:35, 29 June 2020Thumbnail for version as of 00:35, 29 June 20201,350 × 1,970, 10 pages (727 KB)Fæ (talk | contribs)FEDLINK - United States Federal Collection IND81050371 (User talk:Fæ/CCE volumes#Fork8) (batch 1980-1982 #2262)

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