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Sampling Plans for Cryptophlebia spp. (Lepidoptera: Tortricidae) Attacking Macadamia and Litchi in Hawaii

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The suitability of using the presence of eggs or hatched eggs as a predictor of larvaldamage from Cryptophlebia spp. in macadamia and litchi was evaluated. Although larval damage or presence was not independent of egg presence, eggs were not suitable as a predictor of damage. Less than 51% of the macadamia nuts with eggs had larvae or larval damage, and <12% of the litchi fruit showed damage. Binomial sequential sampling plans were developed for both crops using the Wald sequential probability ratio test. On macadamia, the peak average sample number was <100 nuts, and when the percentage of infested nuts was <8 or >25%, the average sample number was <50 nuts. Peak average sample number required for litchi was ≍220 fruit because the thresholds for damage are lower than on macadamia. If damage to litchi is >10%, then the average sample number is <50 fruit.

Document Type: Research Article

Publication date: October 1, 1995

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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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