Propylaea japonica (Thunberg) and Leis axyridis (Pallas) had the widest niche overlap;Leis axyridis (Pallas) and Lysiphlebia japonica (Ashmead) had the smallest ecological niche overlap.

• 龟纹飘虫与异色飘虫的生态位重叠最大，异色飘虫与棉蚜茧蜂的生态位重叠最小。