Oviposition Patterns of Koa Seedworm and Litchi Fruit Moth (Lepidoptera: Tortricidae) on Macadamia and Litchi in Hawaii

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Samples taken from the field when all sizes of macadamia nuts were present indicated that females of the koa seedworm, Cryptophlebia illepida (Butler), and of the litchi fruit moth, C. ombrodelta (Lower), seldom oviposited on nuts <20 mm in diameter. In the same samples, >90% of the nuts had hardened shells by the time they reached 29 mm in diameter, except for the cultivar `Purvis'. Samples taken early in the season, when nut sizes were smaller, showed that smaller size nuts were accepted more frequently as oviposition sites. On litchi, similar studies conducted at four sites with four cultivars showed that female Cryptophlebia exhibit similar fruit size-oviposition patterns. These results indicate that treatment and monitoring activities need not commence until nuts or fruits are >20 mm in diameter.

Document Type: Research Article

Publication date: October 1, 1994

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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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