On the Lathrobiina of Taiwan (Coleoptera: Staphylinidae: Paederinae) Author Assing, Volker text Beiträge Zur Entomologie = Contributions to Entomology 2010 2010-12-20 60 2 301 361 https://www.contributions-to-entomology.org/article/view/1781 journal article 10.21248/contrib.entomol.60.2.301-361 0005-805X 5365391 Lobrathium duplehamatum sp. n. ( Figs 164-171 ) Type material: Holotype ♂ : " Taiwan , Nantou Hsien , Meifeng , 2130 m , 4.V.1998 , A. Smetana [ T199 ] / Holotypus ♂ Lobrathium duplehamatum sp. n. , det. V . Assing 2010" (cSme) . Paratypes : 1 ♂ : same data as holotype (cAss) ; 1 ♂ : " Taiwan , Nantou Hsien , Meifeng , 2130 m , 2.V.1998 , A. Smetana [ T196 ]" (cSme); 1 ♂ : " Taiwan , Nantou Hsien , Meifeng, 2130 m , 10.VII.93, A. Smetana [ T146 ]" (cSme); 1 ♂ : " Taiwan , Nantou Hsien , Meifeng, 2130 m , 10.-17.VII.93, yellow pan traps , A. Smetana [ T147 ]" (cSme); 1 ♀ : " Taiwan , Nantou Hsien , Meifeng, 2130 m , 12.V.1991 , A. Smetana [ T78 ]" (cSme); 2 ♂ ♂ : " Taiwan , Nantou Hsien , Nenkaoshan trail, 2050-2150 m , 8.V.1992 , A. Smetana [ T120 ]" (cSme, cAss) . Description: Large species, 9.5-11.0 mm. Habitus as in Fig. 164 . Coloration as in L. stimulans . Head approximately as broad as long or weakly oblong, posterior angles practically obsolete, broadly rounded ( Fig. 165 ); punctation similar to that in L. stimulans ; eyes of moderate size, approximately half as long as the distance from posterior margin of eye to posterior constriction of head. Antenna as in L. stimulans ( Fig. 166 ). Pronotum approximately 1.2 times as long as broad, as wide as head or indistinctly wider ( Fig. 165 ); punctation similar to that of L. stimulans , but impunctate midline on average longer and broader. Figs 164-171: Lobrathium duplehamatum sp. n. : habitus ( 164 ); forebody ( 165 ); antenna ( 166 ); male sternite VIII ( 167 ); aedeagus in lateral and in ventral view ( 168-169 ); female tergite VIII ( 170 ); female sternite VIII ( 171 ). Scale bars: 164-166: 1.0 mm; 167-171: 0.5 mm. Elytra little more than 0.7 times as long as pronotum; humeral angles marked ( Fig. 165 ); lateral parts with fine submarginal line; punctation coarse and arranged in more or less irregular, oblique, confluent rows, especially in antero-median portion; interstices without microsculpture. Abdomen usually indistinctly broader than elytra; punctation fine and rather dense; interstices with fine microreticulation; posterior margin of tergite VII without discernible palisade fringe. ♂ : posterior margin of tergite VIII weakly angled in the middle; sternites V-VI without impressions; sternite VII posteriorly with shallow oblong impression in the middle, posterior margin weakly concave; sternite VIII posteriorly with narrow impression along the middle, without pegsetae, posterior excision relatively deep and narrow ( Fig. 167 ); aedeagus with apical lobes strongly hooked ( Figs 168-169 ). ♀ : tergite VIII of similar shape as in L. stimulansstimulans ( Fig. 170 ); posterior margin of sternite VIII strongly convex, in the middle weakly concave ( Fig. 171 ); tergite X of similar morphology as in L. stimulans , very slender and apically acute. Comparative notes: Based on the similarly derived secondary sexual characters, as well as the similar general morphology of the aedeagus, L. duplehamatum is closely allied to L. stimulans . It is distinguished from L. stimulansstimulans and L. sororium particularly by larger size, relatively smaller eyes, the somewhat serial arrangement of the elytra punctures, and by the morphology of the aedeagus. Etymology: The specific epithet (Latin, adj.) is composed of duple (from duplex: double) and hamatum (hooked) and refers to the shape of the apical lobes of the aedeagus. Distribution and natural history: The species is known from two localities in Nantou Hsien , central Taiwan , where the type specimens were found at an altitude of 2050-2150 m . They were sifted from leaf litter, bamboo, moss, humus, and other debris in a primary broadleaved evergreen forest, in a mature evergreen forest, mixed forests. One specimen was collected in a pan trap .