Taxonomic status of the subgenus Conoblasta Förster 1869 of the genus Glypta Gravenhorst 1829 with revision of Japanese species (Hymenoptera, Ichneumonidae, Banchinae).

The Japanese species of subgenus Conoblasta Förster 1869 sensu Aubert (1978) and Kuslitzky (1974, 2007) of the genus Glypta Gravenhorst 1829 are reviewed. No reliable synapomorphies are found for the species of Conoblasta after all and thus we conclude that they should be treated as a tentative species group. Eighteen species of the Conoblasta species group, including 11 new species (G. cognata sp. nov., G. daisetsuzana sp. nov., G. densepunctata sp. nov., G. flavitarsus sp. nov., G. ichitai sp. nov., G. karasawensis sp. nov., G. nipponica sp. nov., G. shigaensis sp. nov., G. suwai sp. nov., G. touyaensis sp. nov., G. zenibakoensis sp. nov.) and two newly recorded species (G. chinensis (Uchida 1956) and G. extincta Ratzeberg 1852), are recognized from Japan. A key to the Japanese species is provided.