A review of the genus Linan (Coleoptera: Staphylinidae: Pselaphinae) Author Yin, Zi-Wei Department of Biology, College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, P. R. China; e-mails: yin _ ziwei @ yahoo. com; lizhenli @ shnu. edu. cn Author Li, Li-Zhen Department of Biology, College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, P. R. China; e-mails: yin _ ziwei @ yahoo. com; lizhenli @ shnu. edu. cn Author Zhao, Mei-Jun Department of Biology, College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, P. R. China; e-mails: yin _ ziwei @ yahoo. com; lizhenli @ shnu. edu. cn & Corresponding author; e-mail: mjzhao @ shnu. edu. cn text Acta Entomologica Musei Nationalis Pragae 2011 2011-06-30 51 1 123 135 journal article 10.5281/zenodo.5327198 0374-1036 5327198 Key to males of Linan Hlaváč, 2002 1. Antennae with antennomeres IX–X strongly modified ( Figs. 7, 9, 11 ). L. chinensis species-group. .............................................................................................................. 2 – Antennae with antennomeres IX–X not modified ( Figs. 8, 10 ). L. cardialis speciesgroup. ........................................................................................................................... 4 2. Antennomere IX in male with finely punctate sensory area ( Figs. 7, 9 ); median metaventral horn-like processes bifurcate at apex in lateral view ( Figs. 17, 19 ) ................ 3 – Antennomere IX in male without finely punctate sensory area ( Fig. 11 ); median metaventral horn-like processes not bifurcate at apex in lateral view ( Fig. 21 ). China : Guizhou Province . .................................................................... L. megalobus Yin & Li sp. nov. 3. Scape about 4.6 times as long as wide; sensory area of antennomere IX nearly triangular, extended from basal sixth toward anterior margin ( Fig. 7 ); pro- and mesotrochanters each with small but distinct spine on posterior margin ( Figs. 22–23 ); tergite IV about four times as long as next. Thailand : Wiang Pa Pao; China : Yunnan Province . ............ ............................................................................................... L. cardialis Hlaváč, 2002 – Scape about 5.0 times as long as wide; sensory area of antennomere IX linear, extended from middle toward posterior margin ( Fig. 9 ); pro- and mesotrochanters without spine or protuberance on posterior margin; tergite IV about twice as long as next. China : Hainan Island. ............................................................................... L. hainanicus Hlaváč, 2002 4. Median metaventral horn-like processes large ( Fig. 20 ); aedeagus ( Figs. 33–34 ). China : Anhui Province . ........................................................... L. inornatus Yin & Li sp. nov. – Median metaventral horn-like processes small ( Fig. 18 ); aedeagus ( Figs. 29–30 ). China : Zhejiang Province . ................................................................ L. chinensis ( Löbl, 1964 )