Blahutiak, A. 1973 Effectiveness of the parasite Blastothrix confusa (Hymenoptera, Encyrtidae) in controlling the brown scale, Parthenolecanium corni (Homoptera, Coccidae).. Acta Entomologica Bohemoslovaca 76: 353-370.

Notes: The highest parasitization percentage in these experiments is 62%. The temperature is an important factor.