Revision of the genus Alloplasta Forster, 1869 (Hymenoptera, Ichneumonidae, Banchinae) from Japan

Japanese species of the genus Alloplasta Forster, 1869 are revised. A total of nine species are recorded from Japan, including four new species, A. breviterebra sp. nov., A. japonica sp. nov., A. satana sp. nov. and A. septentrionalis sp. nov. and three species, A. brevipetiolaris Kang & Lee, 2020, A. kuslitzkii Kasparyan, 2007 and A. subgrisea Kasparyan, 2007, newly recorded from Japan. Amersibia longipetiolaris Uchida, 1952 is newly synonymized under A. nigripes (Meyer, 1930) (syn. nov.). A key to Japanese species of this genus is proposed.

Automated summary

Japanese species of the genus Alloplasta are revised, with a total of nine species recorded from Japan, including four new species and three newly recorded species. A key to the Japanese species of this genus is proposed.