The present invention relates to a pesticidal mixture comprising, as active I) at least one active compound I selected from the group consisting of the Streptomyces galbus strain having accession number NRRL 30232, the Streptomyces galbus strain having accession number NRRL 50334, a mutant of said strains, a variant of said strains, a metabolite produced by said strains, a supernatant obtained from the whole broth culture of said strains and a solvent extract of said supernatants, wherein said mutant and variant have the identifying characteristics substantially identical to those of said strains, and 2) at least one active compound II selected from the groups A.I to A.27 as defined in the description, in synergistically effective amounts