taxonID	type	description	language	source
4D7E9C146310FFA8FF4BFC3DF86BF945.taxon	materials_examined	Material examined. 2 ♂♂, 8 ♀♀. labeled ‘ China: Yunnan, Yingjiang Hsien (盈江县), Nabang Town (那邦镇), 24 ° 42 ′ 50.23 ″ N, 97 ° 35 ′ 07.58 ″ E, nr. river, 300 m, 17. ii. 2016, Jian-Yue Qiu & Hao Xu leg. ’	en	Zhou, De-Yao, Yin, Zi-Wei (2017): New data on the genus Syndicus Motschulsky (Coleoptera: Staphylinidae: Scydmaeninae) from Yunnan, southern China. Zootaxa 4247 (5): 569-576, DOI: 10.11646/zootaxa.4247.5.3
4D7E9C146310FFA8FF4BFC3DF86BF945.taxon	discussion	Comments. Syndicus himalayanus (Fig. 1 A) shares with several congeners similar body size, body shape and body proportions, e. g., S. saketianus Jałoszyński, S. birmanicus Jałoszyński. Therefore, examination of the aedeagus (Fig. 2 A – C, F), especially structures of the endophallus (Fig. D – E) is necessary for an unambiguous identification. The large size of the endophallic proximal vesicle, the subrectangular, emarginated upper part of the central complex, and the elongate apical part of the endophallus with its apex forming a rounded structure allow for a certain identification (Jałoszyński 2004: fig. 10 A – C). Also, the shape of the spermatheca (Fig. 3 A – C) in S. himalayanus is extremely similar to that of S. saketianus, but the aedeagal structures of these two species are distinctly different. Here, the unique structure of bursa copulatrix of S. himalayanus is illustrated (Fig. 3 D – E), which has a triangular dorsal plate and a pair of lateral plates connected by a membranous structure. Bionomics. The examined specimens were collected from underside of bark of a decaying log near a river in Nabang Town at an altitude of 300 m (Fig. 5 B – C).	en	Zhou, De-Yao, Yin, Zi-Wei (2017): New data on the genus Syndicus Motschulsky (Coleoptera: Staphylinidae: Scydmaeninae) from Yunnan, southern China. Zootaxa 4247 (5): 569-576, DOI: 10.11646/zootaxa.4247.5.3
4D7E9C146310FFA8FF4BFC3DF86BF945.taxon	distribution	Distribution. India: Assam and Meghalaya; Bhutan: Chukha; Nepal: Chitwan; China: Yunnan (new country record; Fig. 6).	en	Zhou, De-Yao, Yin, Zi-Wei (2017): New data on the genus Syndicus Motschulsky (Coleoptera: Staphylinidae: Scydmaeninae) from Yunnan, southern China. Zootaxa 4247 (5): 569-576, DOI: 10.11646/zootaxa.4247.5.3
4D7E9C146310FFAFFF4BF90AFB75FA9D.taxon	materials_examined	Type material (1 ♂). Holotype: CHINA: ♂, labeled ‘ China: Yunnan, Lincang City (临沧市), Yun County (云县), Manwan Town (漫湾镇), Shuibatou Village (水坝头村) 24 ° 40 ' 12 '' N, 100 ° 20 ' 31 '' E, under bark of rotten wood, 2100 m, 13. iii. 2016, Zi-Chun Xiong leg. ’.	en	Zhou, De-Yao, Yin, Zi-Wei (2017): New data on the genus Syndicus Motschulsky (Coleoptera: Staphylinidae: Scydmaeninae) from Yunnan, southern China. Zootaxa 4247 (5): 569-576, DOI: 10.11646/zootaxa.4247.5.3
4D7E9C146310FFAFFF4BF90AFB75FA9D.taxon	diagnosis	Diagnosis. The remarkable C-shaped endophallic structure seen in the lateral view of the aedeagus is unique for this species and not known in any other Semisyndicus species.	en	Zhou, De-Yao, Yin, Zi-Wei (2017): New data on the genus Syndicus Motschulsky (Coleoptera: Staphylinidae: Scydmaeninae) from Yunnan, southern China. Zootaxa 4247 (5): 569-576, DOI: 10.11646/zootaxa.4247.5.3
4D7E9C146310FFAFFF4BF90AFB75FA9D.taxon	description	Description. Body (Fig. 1 B) slender, moderately convex, uniformly dark brown, legs and palpi slightly lighter. BL 3.21 mm. Head wider than long, widest at relatively small eyes, HL 0.54 mm, HW: 0.64 mm. Tempora longer than length of eye, rounded; vertex relatively long, convex, with very small, hardly noticeable median tubercle adjacent to posterior margin; frons concave; supraantennal tubercles well marked, distinctly demarcated from frons but indistinctly from vertex. Punctation of frons and vertex composed of sharply marked punctures distributed densely and slightly unevenly; setation relatively short, composed of thin, suberect setae. Antennae (Fig. 4 G) relatively short, AnL 1.43 mm, relative lengths of antennomeres: 1.7: 1.5: 1.8: 1.7: 1.5: 1.4: 1.5: 1.5: 1.5: 1.5: 1.6. Pronotum (Fig. 5 A) relatively slender and elongate, widest near anterior 1 / 4 – 1 / 3, PL 0.90 mm, PWm 0.75 mm, PWb 0.64 mm. Anterior and lateral margins rounded together; lateral constriction very distinct, located in posterior third; lateral groove missing; posterior collar relatively long; demarcated from disc by transverse row of four large and deep dorsal pits; additional pit near each hind angle very small; area between inner pair of basal pits raised and forming indistinctly delimited median longitudinal carina; base of pronotum regularly rounded. Punctation on discal part much more distinct than that on head, composed of much larger, unevenly distributed and dense punctures of various diameters, largest punctures are located in central part of disc, posterior collar behind basal pits bearing sparser and smaller punctures. Setation distinctly denser than that on head, relatively short, suberect. Elytra long, oval, widest anterior to middle, EL. 1.76 mm, EW 1.17 mm, EI 1.50. Humeri well-marked, delimited from adsutural area by broad and shallow impression; very narrow adsutural area near base distinctly raised; median circumsutural area on elytra slightly impressed near anterior third. Punctation distinct, composed of smaller punctures than those on pronotum, punctures are moderately dense and evenly distributed, largest on median impression and reducing in diameters and depth toward lateral and posterior margins; setation slightly lighter in color than that on pronotum, moderately dense, setae relatively short, slightly suberect. Aedeagus (Fig. 4 A – C) 0.74 mm in length, elongate; parameres (Fig. 4 F) slender with apices slightly exceeding emarginate apex of median lobe, each paramere with several short preapical setae (Fig. 4 F). Endophallus (Fig. 4 D – E) asymmetrical, with darkly sclerotized central complex located near base of median lobe, and a sub-pentagonal apical plate located near apex of median lobe. A strongly curved sclerite extends from the base of central complex, it is curved to form C-shaped open loop, with apex directed ventrally. Female. Unknown.	en	Zhou, De-Yao, Yin, Zi-Wei (2017): New data on the genus Syndicus Motschulsky (Coleoptera: Staphylinidae: Scydmaeninae) from Yunnan, southern China. Zootaxa 4247 (5): 569-576, DOI: 10.11646/zootaxa.4247.5.3
4D7E9C146310FFAFFF4BF90AFB75FA9D.taxon	discussion	Comments. External characters and body proportions of S. long are similar to those of S. sinensis and S. sichuanicus. The new species differs from S. sinensis in its larger body size (3.21 mm vs. 2.93 mm in S. sinensis), more coarsely punctate pronotum, and longer antennomere III in comparison to antennomere II. Syndicus long is hardly distinguishable from S. sichuanicus by external morphology, only slightly longer body (3.21 mm vs. 3.05 mm in S. sichuanicus) and slightly more slender pronotum may serve to preliminarily distinguish these two species. However, the unique presence of a unique C-shaped, strongly sclerotized endophallic structure can be used to unambiguously separate S. long from all similar congeners. Bionomics. The single male was collected under bark of a decaying log in a mixed forest at Lincang.	en	Zhou, De-Yao, Yin, Zi-Wei (2017): New data on the genus Syndicus Motschulsky (Coleoptera: Staphylinidae: Scydmaeninae) from Yunnan, southern China. Zootaxa 4247 (5): 569-576, DOI: 10.11646/zootaxa.4247.5.3
4D7E9C146310FFAFFF4BF90AFB75FA9D.taxon	distribution	Distribution. Southern China: Yunnan (Fig. 6).	en	Zhou, De-Yao, Yin, Zi-Wei (2017): New data on the genus Syndicus Motschulsky (Coleoptera: Staphylinidae: Scydmaeninae) from Yunnan, southern China. Zootaxa 4247 (5): 569-576, DOI: 10.11646/zootaxa.4247.5.3
4D7E9C146310FFAFFF4BF90AFB75FA9D.taxon	etymology	Etymology. This species is named after a Chinese character ‘ Long (龙) ’, which represents a mythical creature from the traditional Chinese mythology.	en	Zhou, De-Yao, Yin, Zi-Wei (2017): New data on the genus Syndicus Motschulsky (Coleoptera: Staphylinidae: Scydmaeninae) from Yunnan, southern China. Zootaxa 4247 (5): 569-576, DOI: 10.11646/zootaxa.4247.5.3
