| abstract |
Fermentation product A83543 (1), comprising major components A83543A and A83543D and minor components A83543B, A83543C, A83543E, A983543F, A83543G, A83543H and A83543J, is produced by a newly described species, Saccharopolyspora spinosa . The A83543 components and their acid-addition salts (A83543 compounds) are useful as insecticides, particularly against Lepidoptera and Diptera species. Insecticidal, miticidal or ectoparasiticidal combinations, compositions and methods are provided.n wherein R is H or a group selected fromn R² isn R¹, R³, R⁵ and R⁶ are hydrogen or methyl; nR₄ is methyl or ethyl; or an acid addition salt thereof the compounds when R is other than hydrogen. |