Notes on the systematics and nomenclature of some taxa of the genus Chlaenius Bonelli, 1810 (Coleoptera, Carabidae) from the Far East Author Sundukov, Yurii N. 0000-0003-3312-4029 Federal Scientific Center of East Asia Terrestrial Biodiversity, Zoology Department, Laboratory of Entomology, pr. 100 - letiya Vladivostoka 159, 690022 Vladivostok, Russia. yun-sundukov @ mail. ru; https: // orcid. org / 0000 - 0003 - 3312 - 4029 yun-sundukov@mail.ru Author Makarov, Kirill V. 0000-0002-9184-7869 Moscow State Pedagogical University, Institute of Biology & Chemistry, Zoology & Ecology Department, Kibalchicha str. 6, bld. 3, Moscow 129164, Russia. https: // orcid. org / 0000 - 0002 - 9184 - 7869 text Zootaxa 2022 2022-12-19 5222 2 190 200 journal article 53971 10.11646/zootaxa.5222.2.7 7e0388db-28c3-477b-a1a6-161c6db00984 1175-5326 7456761 53D96A2E-27CF-482E-8661-ABD55A28BE59 Key to the Far Eastern species of the subgenus Agostenus Fischer von Waldheim, 1829 , genus Chlaenius Bonelli, 1810 1. Even intervals of elytra more densely punctured, with denser yellow pubescence; odd intervals with less dense black hairs; suture elevated and shining ( Figs 16–18 ). Unicolour black with slight bronze tint. Length 14–18 mm ................... …............................................................................. Chlaenius quadrisulcatus - All intervals of elytra with dense wrinkled punctures and uniform yellow or grey pubescence; elytral suture neither elevated nor shining ( Figs 13–15 ).................................................................................. 2 2. Prosternal process not bordered and punctured. Larger (length 13–15 mm ) and wider. Head without green sheen ( Figs 14–15 ) Chlaenius sulcicollis - Prosternal process distinctly bordered and smooth. Smaller (length 12–13 mm ) and narrower. Head often with green or copper sheen ( Figs 13 )...................................................................... Chlaenius alutaceus