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Pseudococcus citriculus Green and Its Parasites

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The citrus-infesting mealybug Pseudococcus citriculus Green has frequently been misidentified as P. conistocki (Kuw.), a species not known to reproduce on citrus. P. citriculus is widely distributed in East Asia and appears in certain regions to be held at low densities by entomophagous insects. Early importations into California of the parasites of this mealybug were released for the control of Planococcus citri (Risso). The life history of Coccophagus pseudococci Comp., like that of C. gurneyi Comp. parasitic in Pseudococcus gahani Green, is peculiar in that the unfertilized egg hatches only when the body fluids of the parasitized mealybug are consumed by a companion parasite. Pseudococcus citriculus parasitized by Coccophagus pseudococci has been obtained from citrus and Pandanus but only in the vicinity of Taipo Market in South China. The continuing successful control of P. citriculus on citrus in Palestine by Clauscnia purpurea Ishii may be dependent on the absence of the hyperparasite Lygocerus sp.

Document Type: Research Article

Publication date: October 1, 1959

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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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