Revision of the genus Cryptopimpla Taschenberg, 1863 (Hymenoptera, Ichneumonidae, Banchinae) from Japan, with some taxonomic changes of Asian species

The Japanese species of the genus Cryptopimpla Taschenberg, 1863 are revised. A total of 14 species are recognized from Japan, comprising three previously recorded species, six new species, C. aino sp. nov., C. amoena sp. nov., C. nana sp. nov. C. nipponoalpina sp. nov., C. polita sp. nov. and C. shengi sp. nov. and five species, C. breviungula Kuslitzky, 2007, C. henanensis Sheng, 2005, C. maculifacialis Sheng, 2011, C. maculitarsalis Sheng & Sun, 2014 and C. melana Sheng & Sun, 2014, newly recorded from Japan. The generic position of Arenetra genangusta Sheng, Zhang & Yang, 1997, is changed from Arenetra Holmgren, 1859 to Cryptopimpla and C. brevigena Kuslitzky, 2007, a species previously recorded from Japan, is synonymized under C. genangusta (syn. nov.). Additionally, the generic position of the Chinese species, C. carinifacialis Sheng, 2011 is changed from Cryptopimpla to Amphirhachis Townes, 1970 (comb. nov.). A key to the Japanese species of this genus is provided.