In this study, we describe two remarkable species,Ctenochira arkadyiKasparyan,sp. nov.(Tryphoninae) from southern Siberia (Russia), andProbles arkadyiKhalaim,sp. nov.(Tersilochinae) from Japan. These two species are named in honour of our colleague and friend, an expert in Aculeata (Hymenoptera), Russian entomologist, Prof. Arkady Lelej, in honour of his 75^thbirthday. The recently described European species,Ctenochira magnusiHaraldseide, 2018, is discovered from the Russian Far East; the male ofC. magnusiis recorded and described for the first time.