Within-Tree Distribution of Resident Populations of Citrus Blackfly in Texas

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The within-tree distribution of live, developmental forms of the citrus blackfly (CBF), Aleurocanthus woglumi Ashby, was studied on 1277 trees in 7 grapefruit groves in the Texas Rio Grande Valley. No consistent clumping was detected in 12 of 17 samples, though on 3 sample occasions significantly more CBF occurred in the NW tree-quadrants and on 2 occasions in the SW tree-quadrants. Generally, the tree-quadrant bearing the maximum mean no. CBF was the same quadrant bearing the maximum percent leaves infested. Most CBF were detected on inside foliage on 12 of 17 samples, significantly more than on outside foliage on 4 samples.

Document Type: Research Article

Publication date: August 1, 1980

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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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