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    Author(s): Jacqueline L. Roberson; Marion Page; Nancy L. Gillette
    Date: 1974
    Source: Journal of Economic Entomology. 67(6): 706-708
    Publication Series: Scientific Journal (JRNL)
    PDF: Download Publication  (180.32 KB)


    Ten insecticides were tested against larvae of Calocalpe undulala (L.). The decreasing order of toxicity at LD50 was: bioethanomethrin, phenothrin, pyrethrins, phoxim, tetrachlorvinfos, mexacarbate, carbaryl, phosmet, DDT, and malathion. At LD90,the decreasing order of toxicity was the same, except that phoxim and tetrachlorvinfos switched positions. Malathion was not toxic at the highest dose level tested (500 µ/g body weight). When the response of C. undulata was compared with that of 4 other forest geometrid species, the data showed that pyrethroids were always the most toxic candidates whereas malathion was always the least toxic.

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    Roberson, Jacqueline L.; Page, Marion; Gillette, Nancy L. 1974. Calocalpe undulata: Contact toxicity of ten insecticides to the larvae. Journal of Economic Entomology. 67(6): 706-708.

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