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Insect infestation of farm stored shelled corn and wheat in minnesota usa



Insect infestation of farm stored shelled corn and wheat in minnesota usa



Journal of Economic Entomology 74(2): 197-202



Farm-stored shelled corn and wheat in south-central and west-central Minnesota were sampled for insects during 1977 and 1978. The most common insects, in decreasing order, were Cryptolestes spp., Ahasverus advena (Waltl), Plodia interpunctella (Huebner), Cynaeus angustus (LeConte), Tribolium castaneum (Herbst), Typhaea stercorea (L.) and Oryzaephilus surinamensis (L.). A. advena and Cryptolestes spp. were the most abundant. Of 38 bins of shelled corn sampled in south-central Minnesota, 10 had 15 or more live adult insects per .apprx. 0.95 l (1 quart) sample. Fifteen bins had 5-14 insects per .apprx. 0.95 l sample. Mold-damaged areas were infested by numerous species simultaneously. Samples of grain collected at a local country elevator confirmed the similar frequencies of occurrence of the insect species detected in farm-stored grain. C. angustus was unexpectedly found to be both common and abundant in shelled corn.

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Accession: 005713737

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