Activity of TH-6041 and TH-6042 Against Stored-Product Insects

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Two experimental insecticides, TH-6041 [N, 3-bis(4-chlorophenyl)-4,5-dihydro-1 H-pyrazole-I-carboxamide] and TH-6042 [N, 3-bis(4-chlorophenyl)-4,5-phenyl-1 H-pyrazole-1-carboxamide] were relatively toxic on wheat to the adult stages of the rice weevil, Sitophilus oryzae (L.), granary weevil. S. granarius (L.), and lesser grain borer, Rhyzopertha dominica (F.) (LD95 ≤ 6 ppm). The confused flour beetle, Tribolium confusum Jacquelin duVal, sawtoothed grain beetle, Oryzaephilus surinamensis (L.), Indian meal moth, Plodia interpunctella (Hübner), Angoumois grain moth, Sitotroga cerealella (Olivier), and almond moth, Ephestia cautella (Walker), were more tolerant (LD95 ≥ 35 ppm). TH-6042 was very effective as a progeny suppressant against all Coleoptera (ID95 < 5 ppm) but only marginally active against Lepidoptera (ID95 < 48 ppm). TH-6041 had good activity against progeny of the rice weevil, granary weevil, sawtoothed grain beetle, and lesser grain borer (ID95 ≤ 26 ppm).

Document Type: Research Article

Publication date: October 15, 1978

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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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