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Feeding by Korscheltellus gracilis (Lepidoptera: Hepialidae) Larvae on Roots of Spruce and Fir

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Feeding habits of KOTscheltellus gracilis (Grote) were determined in the laboratory and field in Vermont. Gymnospenn and angiosperm seedlings and one fern were exposed to larvae. Significant reductions in root length or volume occurred in all three taxa. Larvae removed root bark and phloem and often girdled stem bases. Feeding damage was similar to that found in high elevation spruce-fir forests on Camels Hump Mountain, VT. The feeding experiments suggest that this insect may have a negative effect on regeneration and contribute to red spruce (Picea rubens) and balsam fir (Abies balsamea) decline in the northeastern United States.

Document Type: Research Article

Publication date: December 1, 1992

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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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