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    Author(s): Marion Page; Roger B Ryan; Nancy Rappaport; Fred<sup>3</sup> Schmidt
    Date: 1982
    Source: Environ. Entomol. 11: 730-732
    Publication Series: Miscellaneous Publication
    PDF: Download Publication  (478.56 KB)


    Fourth-instar larch casebearer, Coleophora laricella (Hübner), was significantly less susceptible to acephate and malathion than were adults of its parasites. Chrysocharis larcinellae(Ratz.) and Dicladocerus nearcticus Yoshimoto (P0.01) than the hosts to diflubenzuron. Malathion was equally toxic to both parasite species. D.nearcticus appeared to be the more tolerant of the parasites to both acephate and diflubenzuron.

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    Page, Marion,; Ryan, Roger B,; Rappaport, Nancy,; Schmidt, Fred3 1982. Comparative toxicity of Acephate, Diflubenzuron, and Malathion to larvae of the Larch Casebearer, Coleophora laricella (Lepidoptera: Coleophoridae) and adults of its parasites, Chrysocharis laricinellae1 and Dicladocerus nearcticus1,2. Environ. Entomol. 11: 730-732

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