Gu, D.X., & Chen, Y.G. 1998 Life tables of Hemiberlesia pitysophila Takagi and its parasitism rate by Coccobius azumai Tachikawa.. Natural Enemies of Insects 20: 4, 156-163.

Notes: Coccobius azumai was introduced from Japan where it successfully controls the pest Hemiberlesia pitysophila. Three experimental sites [in China] where the parasitoids were released in 1989, 1990 and 1991 and one control site were chosen to construct life tables of the pest. From the life tables it was shown that the key factor controlling the pest was parasitism of the female adults by the parasitoid in the release sites. The parasitism rate ranged from 3.3 to 12.04% (average 7.78%).