EN
Scale insects are difficult to control even with insecticides. Their biological control in glasshouses is briefly reviewed. Particular attention was given to P. citri, C. hesperidum, S. coffeae and S. oleae. The parasites studied include L. abnormis and L. dactylopii which attack P. citri, M. luteolus which attacks C. hesperidum, and M. heholus which attacks Saissetia. Other biological control agents include predators: C. montrouzieri, N. reunioni and S. cyanea, and fungi: C. oxysporum and V. lecanii. The above species seem to be effective biological control agents.