Snowball, G.J. 1969 Prospects for biological control of white wax scale (Gascardia destructor) in Australia by South African natural enemies.. Journal of the Entomological Society of Australia (N.S.W.) 5: 23-33.

Notes: White wax scale (Gascardia destructor) is an important pest of citrus in New South Wales and Queensland and infests over 100 species of native and introduced plants. Natural enemies already present have little influence on the abundance of the scale. In 1966 the writer visited South AFrica to assess the possibility of obtaining natural enemies for importation. Morphological and biological data indicated that the Australian and South African G. destructor are conspecific. 17 species of natural enemies of G. destructor were likely to be available from South Africa.