In Baoding, the dominant species of the Aphidiidae in wheat filed was A. gifuensis in early spring and autumn but A. avenae during the summer.

• 保定地区夏季麦蚜盛发期以燕麦蚜茧蜂为优势种，秋季和初春麦田以烟蚜茧蜂为优势种。