“…Numerous attempts at biological control of the San Jose scale have been made in many areas of the world (. Rosen and DeBach, 1976;Mathys, 1966;Bohm, 1963;Mathys and Guignard, 1962;Neuffer, 1962;Rehman, Ghani, and Kazimi, 1961;Benassy and Bianchi, 1960;Rao and Rao, 1960;Huba, 1958). Nearly all of these involved the introduction of the endoparasitic aphelinid, Prospaliella perniciosi Tower and often its mass production and periodic colonization.…”