Species Composition of Parasitoids Attacking Pleuroptya ruralis (Scopoli) (Lepidoptera: Crambidae) in Toyama Prefecture

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  • Katayama Masao
    Toyama Prefectural Takaoka Agriculture and Forestry Promotion Center
  • Nishijima Hiroe
    Agricultural Research Institute, Toyama Prefectural Agricultural, Forestry & Fisheries Research Center
  • Kichishima Toshinori
    Toyama Prefectural Niikawa Agriculture and Forestry Promotion Center

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Other Title
  • 富山県におけるウコンノメイガ寄生蜂の種構成
  • トヤマケン ニ オケル ウコンノメイガ キセイバチ ノ タネ コウセイ

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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 .

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