The hymenopterous parasitoids of Cystidia couggaria (Guenée) (Lepidoptera: Geometridae) were investigated in Sendai, Miyagi Prefecture, Japan. The parasitoids that emerged from Cystidia couggaria pupae were Chouioia cunea (Eulophidae), Monodontomerus minor (Torymidae), Brachymeria lasus (Chalcididae), Brachymeria sp. (Chalcididae), Dibrachys cavus (Pteromalidae) and Eupelmus sp. (Eupelmidae). The dominant species was M. minor.