Tetranychus urticae Koch was found on feral host plants during the winter months. Individual mites collected in January with the physical appearance of being in diapause laid eggs immediately when placed on excised lima bean leaves at 27°C and 16-h photoperiod. A pathogeruc fungus, Entomophthora floridana Weiser and Muma, was found in a viable state throughout the winter. Laboratory studies indicated that the fungus can maintain itself at low winter temperatures common to eastern North Carolina. Infection of twospotted spider mites and fungal development, although significantly reduced from that measured at higher temperatures, occurred at 5°C.
Document Type: Research Article
Publication date: August 1, 1981
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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.