Infestation by the rusty grain beetle, Cryptolestes ferrugineus (Stephens), was found in the grain loaded in 47 (38%)of 125 railroad cars in 1977 and in 72 (53%)of 136 cars in 1978 at primary elevators near Winnipeg, Manitoba. The grain loaded in about half of the cars contained larvae only. Mites were found in the grain loaded in 78 and 90% of the railroad cars in 1977 and 1978, respectively. Other insects found, in order of decreasing frequency, were psocids, dermestid larvae, and fungus beetles. Oryzaephilus surinamensis (L.), Tribolium castaneum (Herbst), Palorus subdepressus (Wollaston), Tenebrio molitor (L.), and Sitophilus granarius (L.) were found in the grain loaded in five or fewer cars in 1977 and 1978. No more than 6% of the infested carloads found at primary elevators were detected by inspectors at terminal elevators. Less than 5% of the carloads of grain sampled contained rusty grain beetles from grain delivered directly from the farm.
Document Type: Research Article
Publication date: June 1, 1985
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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.