Five new species of the genera Labomimus and Linan from Guangxi, South China (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-mail: yin _ ziwei @ yahoo. com 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-mail: yin _ ziwei @ yahoo. com & corresponding author: e-mail: lizhenli @ shnu. edu. cn text Acta Entomologica Musei Nationalis Pragae 2013 2013-07-15 53 1 141 153 journal article 10.5281/zenodo.5740186 0374-1036 5740186 Linan hujiayaoi sp. nov. ( Figs 4C , 7 , 8D ) Type locality. China , Guangxi Province , Jinxiu County, Sheng-Tang-Shan Mt., ca. 1700 m a.s.l., 23°58′51″N , 110°06′06″E . Type material (4 JJ, 7 ♀♀ ). HOLOTYPE : J, labeled ‘ CHINA : Guangxi Prov. / Jinxiu County / Shengtangshan Mt. / 26.vii.2011 , 1650– 1800 m / Jia-Yao Hu leg. // HOLOTYPE (red) / Linan hujiayaoi / sp. n., Yin & Li / det. 2012, SNUC’. PARATYPES : 3 JJ, 7 ♀♀ , same label data as holotype ; 2 ♀♀ , same label data, except ‘ 1400–1600 m / Zi- Wei Yin leg.’ All paratypes bear the following label: ‘ PARATYPE (yellow) / Linan hujiayaoi / sp. n., Yin & Li / det. 2012, SNUC’. Fig. 7. Diagnostic features of male Linan hujiayaoi sp. nov. A – antennal club; B – pronotum; C – metaventral process, lateral view; D – protrochanter and profemur; E – mesotrochanter and mesofemur; F – metatrochanter and metafemur; G – sternite IX; H – aedeagus, dorsal view; I – same, lateral view; J – same, ventral view. Scales:A, B, D, E, F = 0.3 mm; C, H, I, J = 0.2 mm; G = 0.05 mm. Fig. 8. Habitats of the new species.A – Maoershan Mt., 2000 m; B – Huaping N.R. , 1700 m; C – Lianhuashan Mt., 1100 m; D – Shengtangshan Mt., 1700 m. Diagnosis. Reddish brown; medium-sized; postgenae rounded; antennomeres IX–XI enlarged, lacking obvious modification; pronotum with lateral margins rounded; with short thick metaventral processes; metatrochanter spinose ventrally; aedeagus with nearly symmetric median lobe. Description. Male ( Fig. 4C ). Length 2.42–2.46. Head longer than wide, HL 0.60–0.61, HW 0.52–0.53; eyes each composed of about 20 facets.Antennal club as in Fig. 7A . Pronotum ( Fig. 8B ) slightly longer than wide, PL 0.57–0.58, PW 0.52–0.53, with lateral margins rounded. Elytra wider than long, EL 0.64–0.65, EW 0.88–0.92. Short and thick metaventral processes nearly triangular ( Fig. 7C ). Protrochanters and profemora simple ( Fig. 7D ), mesotrochanters ( Fig. 7E ) with tiny ventral spine, metatrochanters ( Fig. 7F ) with short hook-like ventral spine. Abdomen large, AL 0.61–0.62, AW 0.91–0.97. Sternite IX as in Fig. 7G . Aedeagus length 0.37; with nearly symmetric median lobe ( Figs. 7H–J ). Female. Similar to male in general; BL 2.33–2.43, HL 0.56–0.60, HW 0.48–0.51, PL 0.55–0.56, PW 0.51–0.52, EL 0.57–0.59, EW 0.89–0.92, AL 0.65–0.68, AW 0.96–0.97. Eyes each composed of about 20 facets. Antennae simple; metaventral processes absent. Comparative notes. This is placed as a member of the L . chinensis group by the unmodified antennal clubs in the male. The new species is most close to L . chinensis (Löbl, 1964) by sharing the short metaventral process. The two species can be separated by the transverse antennomeres VIII and X in L. hujiayaoi , while L. chinensis has elongate antennomeres VIII and X. Etymology. This species is named after Jia-Yao Hu, who collected all the male specimens of the type series. Biology. Individuals were collected by sifting leaf litter of a coniferous broad-leaved forest near the peak of the mountain ( Fig. 8D ). Distribution. South China : Guangxi . Revised key of YIN et al. (2011) to males of Linan An error was detected in the original key: the two species-group names in the first two couplets were mistakenly interchanged. This revised key makes all the necessary corrections. 1. Antennae have antennomeres IX–X strongly modified ( YIN et al. 2011: 128 , Figs 7 , 9, 11; Figs. 5A , 6A ). L. cardialis- group. ................................................................................. 2 – Antennae have antennomeres IX–X lacking obvious modification ( YIN et al. 2011: 128 , Figs 8 , 10; Fig. 7A ). L. chinensis- group. ...................................................................... 7 2. Pronotal lateral margins roundly expanded basolaterally. (South China : Yunnan ). .......... ......................................................................................... L. tendothorax Yin & Li, 2012 – Pronotal lateral margins evenly rounded, not basolaterally expanded. .......................... 3 3. Large-sized, over 3.3 mm ; tergite IV about four times as long as tergite V. ( Thailand : Wiang Pa Pao; Southwest China : Yunnan ). ............................. L. cardialis Hlaváč, 2002 – Medium-sized, less than 3 mm ; tergite IV about twice the length of tergite V. ............. 4 4. Protibiae lacking apical spur. (South China : Guangxi ). ........... L. huapingensis sp. nov. – Protibiae with apical spur. .............................................................................................. 5 5. Pronotal and elytral basolateral margins with tuft of dense setae; protibiae with apical spur indistinct. (South China : Guangxi ). ...................................... L. fortunatus sp. nov. – Pronotal and elytral basolateral margins lacking tuft of dense setae; protibiae with distinct apical spur. ...................................................................................................................... 6 6. Median metaventral processes not bifurcate at apex in lateral view ( YIN et al. 2011: 128 , Fig. 21). (Southwest China : Guizhou ). ............................ L. megalobus Yin & Li, 2011 – Median metaventral processes bifurcate at apex in lateral view ( YIN et al. 2011: 128 , Fig. 19). (South China : Hainan ). .......................................................... L. hainanicus Hlaváč 7. Median metaventral processes long ( YIN et al. 2011: 128 , Fig. 20). (East China : Anhui ). .............................................................................................. L. inornatus Yin & Li, 2011 – Median metaventral processes short ( YIN et al. 2011: 128 , Fig. 18; Fig. 7C ). ............... 8 8. Antennomeres X and VIII more or less transverse ( Fig. 8A ); metaventral processes with pointed apex ( Fig. 7C ); metatrochanter protuberant ventrally ( Fig. 7F ). (South China : Guangxi ). ........................................................................................ L. hujiayaoi sp. nov. – Antennomeres X and VIII elongate ( YIN et al. 2011: 128 , Fig. 8 ); metaventral processes with bluntly rounded apex ( YIN et al. 2011: 128 , Fig. 18); metatrochanter simple. (East China : Zhejiang ). ..................................................................... L. chinensis (Löbl, 1964)