Abstract
The bean webworm, Pleuroptya ruralis (Scopoli), is known as a serious pest of soybeans. The overwintering generation and summer generation use the nettles (Urticales, Urticaceae) and soybeans as host plants, respectively. Parasitoids of P. ruralis larvae were investigated in nettle colonies and soybean fields in 2009 and 2010. Eleven species of parasitoids that belong to Braconidae, Ichneumonidae and Bethylidae emerged from the P. ruralis. Percentage parasitism in overwintering generation is higher than that in summer generation. The predominant parasitoid in overwintering generation was Macrocentrus cingulum Brischke in Braconidae .
