A taxonomic review of Korean Acrotona Thomson with a description of new species (Coleoptera, Staphylinidae, Aleocharinae) Author Lee, Seung-Gyu Division of Forest Biodiversity, Korea National Arboretum, Pocheon 11186, South Korea. jspdi @ naver. com Author Ahn, Kee-Jeong Department of Biology, Chungnam National University, Daejeon 34134, South Korea. kjahn @ cnu. ac. kr text Zootaxa 2018 2018-05-08 4418 3 247 263 journal article 22661 10.11646/zootaxa.4418.3.3 bace504a-09db-4a62-a010-f903f2d92d22 1175-5326 3769610 959FE164-2912-42F8-B44E-52DC26B85C5A Key to Korean species of the genus Acrotona Thomson 1. Body color relatively darker (Habitus, figs. 1A, D–G); antennomeres compactly close together ( Fig. 6A )............... 2 - Body color relatively paler (Habitus, figs. 1B–C); antennomeres moderately or loosely close together ( Fig. 5A ).......... 6 2. Body length about 2.0 mm (Habitus, fig. 1E).......................................... Acrotona ( Acrotona ) setaria - Body length more than 2.0 mm.......................................................................... 3 3. Antennomere 5 subquadrate, slightly transverse ( Figs. 6A , 7A )................................................ 4 - Antennomere 5 quadrate, about as long as wide............................................................ 5 4. Macrochaetal arrangement of abdominal tergites II–III 01-03; male sternite VIII with seven macrosetae, posterior margin slightly round, without macrosetae ( Fig. 6C )................................................ A . ( A .) pseudotenera - Macrochaetal arrangement of abdominal tergites II–III 01-12; male sternite VIII with more than ten macrosetae, posterior margin truncate, with five macrosetae ( Fig. 7C )..................................................... A . ( A .) vicaria 5. Body color darker; length less than 2.5 mm (Habitus, fig. 1A); eyes relatively small, about as long as temples..................................................................................................... A . ( A .) aterrima - Body color paler; length more than 2.5 mm (Habitus, fig. 1F); eyes relatively large, slightly longer than temples; elytra paler............................................................................... A . ( A .) suspiciosa suspiciosa 6. Body less glossy and convex (Habitus, fig. 1B); labrum with nine macrosetae on each side of mildline ( Fig. 2A ); abdominal tergite III without anterior macroseta................................................... A . ( A .) koreana sp. nov. - Body distinctly glossy and convex (Habitus, fig. 1C); labrum with eight macrosetae on each side of mildline; abdominal tergite III with anterior macroseta.................................................................. A . ( A .) lutulenta