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BIOLOGY AND HABITS OF THE WHITE FIR NEEDLE MINER, EPINOTIA MERITANA (LEPIDOPTERA: OLETHREUTIDAE), IN COLORADO

Published online by Cambridge University Press:  31 May 2012

Larry C. Yarger  and
J. Wayne Brewer
Larry C. Yarger
Affiliation:
U.S. Department of Agriculture, Forest Service, Juneau, Alaska
J. Wayne Brewer
Affiliation:
Department of Zoology and Entomology, Colorado State University, Fort Collins
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Abstract

A population of the white fir needle miner, Epinotia meritana Heinrich (Lepidoptera: Olethreutidae), infesting white fir, Abies concolor (Gord and Glend.) Lindl., was studied in southcentral Colorado. Adults oviposited from mid-June through mid-August. Eggs were deposited on the concave side of needles, near the base. Larvae hatched in late July and August, then mined needles 1 or more years old before overwintering inside the first or second mined needle. In the spring, each larva mined one or two additional needles before pupating in the last needle during May or June. There was one generation per year.

White firs of all age classes were subject to defoliation, but tops of codominant trees were most heavily damaged. Oviposition occurred most often on 3–5 year old needles and larvae generally did not move to another year’s foliage. Apanteles (Braconidae) was the most prevalent parasitoid observed, causing about 11% larval mortality.

Type
Articles
Information
The Canadian Entomologist , Volume 109 , Issue 6 , June 1977 , pp. 849 - 854
Copyright
Copyright © Entomological Society of Canada 1977

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References

DeLeon, D. 1939. An outbreak of a needle miner Epinotia meritana, in white fir. Pan-Pacif. Ent. 15: 89–90.Google Scholar
McGregor, M. D. and Washburn, R. I.. 1968. The white fir miner, Epinotia meritana, in Utah. J. econ. Ent. 61: 1506–1507.CrossRefGoogle Scholar
Struble, G. R. 1968. Infestations and biology of the white-fir needle miner in California red fir. J. econ. Ent. 61: 1093–1097.CrossRefGoogle Scholar
Washburn, R. I. and McGregor, M. D.. 1974. White-fir needle miner. U.S. Dep. Agric. For. Serv. Pest Leafl. 144. 5 pp.Google Scholar