Pacific Southwest

Title: 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 nearcticus^1,2

Author: Page, Marion,; Ryan, Roger B,; Rappaport, Nancy,; Schmidt, Fred³

Date: 1982

Source: Environ. Entomol. 11: 730-732

Description: 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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Citation

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 nearcticus^1,2.   Environ. Entomol. 11: 730-732.