A new species of genus Tetrasticta Kraatz (Coleoptera, Staphylinidae, Aleocharinae) from Xishuangbanna, Southwest China Author Zheng, Dan-Lin Author Zhao, Mei-Jun text ZooKeys 2014 404 113 116 http://dx.doi.org/10.3897/zookeys.404.7276 journal article http://dx.doi.org/10.3897/zookeys.404.7276 1313-2970-404-113 C929E4541B8D492EBFE725E67E8EA109 C929E4541B8D492EBFE725E67E8EA109 Tetrasticta bobbii sp. n. Fig. 1 Type material. Holotype:China: ♂, labelled 'CHINA: Yunnan Prov., Xishuangbanna, Mengla County (勐腊县), Nangongshan (南贡山), alt. 800-1000 m, 7.VII.2003, Hu & Tang leg. / HOLOTYPE [red], Tetrasticta bobbii sp. n., Zheng & Zhao det. 2014, SNUC' . Paratypes: China: 1 ♂, 1 ♀ (preserved in a small tube filled with 75% ethanol), same data as holotype, both bearing the following label: 'PARATYPE [yellow], Tetrasticta bobbii sp. n., Zheng & Zhao det. 2014, SNUC' . Description. Body (Fig. 1A) shining. Coloration: head black; antennae and pronotum reddish brown; elytra reddish brown with anterior margin reddish yellow; legs reddish yellow; abdomen with tergites II-IV reddish yellow, tergites VI-VII black. Figure 1. Tetrasticta bobbii sp. n. A male habitus, in dorsal view B female head, in dorsal view C male head, in dorsal view D antennomere I-V E mentum F male tergite VIII G male sternite VIII H female tergite VIII I median lobe of aedeagus, in lateral view J ditto, apical part, in ventral view K apical lobe of paramerite, in lateral view L spermatheca. Scales (mm): A = 1; B, C = 0.5; D = 0.3; E = 0.05; F, G, H, I = 0.2; J, K, L = 0.05. Head (Figs 1B, C) almost 1.05 times as wide as long; slightly narrower than pronotum; surface sparsely covered with yellow setae; eyes large. Antennae (Figs 1A, D) with segment I long, as long as combined length of segments II-III ; segments II and III about one-half of segment I; segment IV extremely short, much wider than long; segments IV-V almost as wide as long; segments VI-X wider than long. Mandibles long, slender. Mentum distinctly transverse, about 3.62 times as wide as long; shaped as in Fig. 1E. Pronotum wider than long, about 1.38 times as wide as long; surface moderately covered with yellow setae; disc with three shallow depressions; shaped as in Fig. 1A. Elytra wider than long; surface moderately covered with yellow setae. Abdomen flattened, with subparallel lateral margins, widest at segments IV-V ; tergite VIII with six pairs of macrosetae; sternite VIII (Fig. 1G) generalized in shape, posterior margin convex in the middle, with eight pairs of macrosetae. Male: postocular margins straight for a short distance and then narrowed posteriorly (Fig. 1C); posterior margin of tergite VIII (Fig. 1F) broadly convex; median lobe of aedeagus (Figs 1I, J)slightly narrowed apically in lateral view; inner sac with flagellum coiled five times; apical lobe of paramerite (Fig. 1K) slightly dilated, apically with four setae. Female: postocular margins immediately narrowed behind eyes (Fig. 1B); tergite VIII shaped as in Fig. 1H; spermatheca shaped as in Fig. 1L. Distribution. Southwest China: Yunnan. Measurements. Male: BL: 3.81-4.00; HL: 0.79-0.82; HW: 0.83-0.85; PL: 0.64-0.65; PW: 0.88-0.90; HW/HL: 1.05-1.06; PW/PL: 1.37-1.38; HW/PW: 0.94 -0.95. Female: BL: 3.62; HL: 0.70; HW: 0.74; PL: 0.61; PW: 0.85; HW/HL: 1.06; PW/PL: 1.40; HW/PW: 0.87. Remarks. Tetrasticta bobbii is most similar to Tetrasticta gnatha in overall body shape, relatively long mandibles, but can be readily distinguished form it by the distinctly long antennal segments II-III , the different shape of abdominal tergite VIII and the form of aedeagal median lobe. Etymology. Named after the Pomeranian dog of senior author.