Phenology and Heat Accumulation as Field Guides for the Seasonal History of the Western Pine Shoot Borer (Lepidoptera: Olethreutidae)1

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Survey and control measures are available for the western pine shoot borer, Eucosma sonomana Kearfott, but timing is a problem because of the cryptic nature of the insect in the field. In central Oregon, key features of the insect's seasonal history were related to heat accumulation (degree-days [DD] above 5.5) and phenological characteristics of one of its hosts, ponderosa pine, Pinus ponderosa Douglas ex Laws., and eight other associated shrubs and forbs. These relationships permit the status of the shoot borer's seasonal history, such as the egg-laying period, to be established indirectly from local temperature records or by observations of some obvious phenological characteristics of its host and associated plants.

Document Type: Research Article

Publication date: February 1, 1988

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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