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从日本冲绳引入的松突圆蚧花角蚜小蜂CoccobiusazumaiTachikawa是1989年在惠东县首批释放定居成功的。经五年系统研究表明，花角蚜小蜂释放一年后，在中心区50m以内最高寄生率达55．8％～64．2％，雌蚧密度由每针束3．14头下降为0．64头；二年后控制松突圆蚧的有效半径增至300m左右，寄生率稳定在20．8％～32．9％，每针束雌蚧密度保持在0．6头左右，二者处于低密度的平衡状态。未放蜂对照区的雌蚧密度则由每针束3．40头上升到4.22头，高出放蜂区5～10倍。此外本报告还对花角蚜小蜂的扩散速度、种间竞争能力和数量稳定水平作了探讨和分析，得出瘦柄花翅蚜小蜂Mariettacarnesi（Howard）在花角蚜小峰释放区内的重寄生率仅为3．1％～5．3％，对花用蚜小蜂的控制效能没有影响的结论。
CoccobiusazumaiTachikawa introduced from Japan Okinawa CoccobiusazumaiTachikawa was first released in 1989 in Huidong County to settle successfully. After five years of systematic research, the maximum parasitism rate reached 55.8% -64.2% in the central area within 50m after one year’s release and the density of female scales declined from 3.14 to .64 head. Two years later, the effective radius of control scale was increased to about 300 m, the parasitism rate was stable at 20.8% -32.9%, and the density of female scales in each needle bundle was kept at about 0.6. In a low-density balance. The density of female scale in the control area without beekeeping increased from 3.40 to 4.22 per needle and 5 to 10 times higher than the beekeeping area. In addition, the report also discussed the spread rate, the interspecific competition ability and the quantity stability of the small-headed beetle Aphis gossypii, and concluded that Mariettacarnesi (Howard) Heavy parasite rate was only 3.1% ~ 5.3%, the effect of the control effect on the aphid wasps had no effect.