记述蚜小蜂科1中国新纪录属——原蚜小蜂属Protaphelinus Mackauer,对该属模式种尼氏原蚜小蜂Protaphelinus nikolskajae(Yasnosh)作了重新描述,附有雌、雄形态特征及其蚜虫寄主照片。本研究的尼氏原蚜小蜂采自黑龙江五大连池,寄生火山杨Populus sp.上的远东枝瘿绵蚜Pemphigus borealis Tullgren。目前该属世界仅记载1种,是造瘿蚜虫瘿绵蚜科Pemphyidae瘿绵蚜属Pemphigus的专性寄生蜂。
The genus Protaphelinus Mackauer (Hymenoptera: Aphelinidae) is recorded for the first time from China and Protaphelinus nikolskajae (Yasnosh) is redescribed in detail and illustrated by macrophotography. This is the parasitoid specifically associated with the gall-making aphid, Pemphigus borealis Tullgren (Aphidoidea: Pemphyidae) found on the poplar tree (Populus sp.) in Wudalianchi, Heilongjiang Province.