The spatial distribution patterns of the immature stages of Platyptilia carduidactyla (Riley) were studied. Sampling efficiencies for plume moth eggs, larvae and pupae are presented. During vegetative stage of the plant, moth eggs were found mainly on the lamina of the lower leaf-surface and on leaves within the 30°–60° area of the plant. Significantly more larvae were found at the young interfolding central leaves. At floral-heads producing stage, most eggs were on leaves immediately below the heads. Flower heads contained 96% of all larvae found. Pupation occurred on old senescing leaves (62%) and in the leaf litter (38%). Egg and larval distribution patterns fit the negative binomial model. Sampling efficiency and optimum sample sizes were determined.
Document Type: Research Article
Publication date: February 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.