First checklist of the chrysidid wasps (Hymenoptera, Chrysididae) of Mongolia, with description of new species Author Rosa, Paolo Via Belvedere 8 / d, I- 20881 Bernareggio (MB), Italy https://orcid.org/0000-0003-2919-5297 Author Proshchalykin, Maxim Yu. Federal Scientific Centre for East Asian Terrestrial Biodiversity, Far Eastern Branch of Russian Academy of Sciences, Vladivostok 690022, Russia https://orcid.org/0000-0001-7870-8226 proshchalikin@biosoil.ru Author Halada, Marek Milady Horakove 74 37012 Ceske Budejovice, Czeck Republic Author Aibek, Ulykpan National University of Mongolia, Ulaanbaatar 210646, Mongolia text ZooKeys 2020 999 49 107 http://dx.doi.org/10.3897/zookeys.999.58536 journal article http://dx.doi.org/10.3897/zookeys.999.58536 1313-2970-999-49 34E6CD7AEAD146D4926A61683DFFC740 917CDF077020599AB0CA822B3D80745A Colpopyga nesterovi Rosa, 2017 Colpopyga nesterovi Rosa, 2017b: 301. Holotype ♀; Kazakhstan: Aktobe Prov., Mugodzhary Mt., Emba River valley, 17.vi.1985, leg. M. Nesterov (ZIN) (examined). Material examined. Mongolia: Dornod , 2 ♀♀, 1 ♂, 20 km W of Choilbalsan, 800 m, 48°01'N , 114°14'E , 24.VII.2007, leg. MH (MHC). Distribution. *Mongolia (Dornod); Kazakhstan ( Rosa 2017b ).