成虫的

The melanous rate of adults was 2.75%.

成的黑化个体占2.75％。

Fig. 1. Cumulative preadult mortality rate of Bemisia argentifolii, originating from three groups of host plant, on six

图源类作物的银叶粉虱在六种杂草的成累积死亡率.

Therefore, the ladybird beetle could be considered as a potential biocontrol agent in controlling the pine mealybug in practice.

圆斑弯叶毛瓢对湿地松粉蚧有较强的食作用，通过散放瓢的成和幼，增加林间瓢的，较好地抑制湿地松粉蚧的增长。