taxonID	type	description	language	source
03F687A9FFE9FFB3FF786E5869F01743.taxon	materials_examined	Material examined. China. 1 ♂, Liaoning, Laotudingzi Nature Reserve, sweep net, 13 August 2015, leg. Feilong Chen (SCILA 007 - 16) (ZAFU); 1 ♂, Shaanxi, Zhouzhi, Houzhenzi, Old Town of Protected Areas, Jingyang Guesthouse (33 ° 48 ' 09 ″ N, 107 ° 44 ' 49 ″ E; elev. 1797 m), light trap, 19 August 2014, leg. Lan Ye (SCILA 008 - 16) (ZAFU). Norway. 1 ♂, Hedmark, Elverum, S Starmoen, yellow-pan trap, 01 – 06 September 2014, leg. Kjell Magne Olsen (SCINO 736 - 15) (CBFO). Canada. 1 ♂, Northwest Territories (65.2791 ° N, 126.83 ° W), 12 August 2014, leg. S. Behrens & R. Popko (GMORK 2686 - 15) (BIOG). Diagnosis. The species is distinguished by the longer basalmost megasetae with 10 – 13 megasetae and larger wing length of 1.4 – 1.7 mm (Vilkamaa et al., 2004). Description. See Vilkamaa et al., 2004. Remarks. This species has a wide distribution, which was originally recorded in Japan and is new to China and Norway. The Chinese specimens examined, show some slight differences from the original description that length / width of 4 th flagellomere 2.08 – 2.13, R 1 / R 0.61 – 0.72 in the Chinese specimen, while length / width of 4 th flagellomere 1.65 – 1.90 and R 1 / R 0.75 – 0.95 in the type series. Distribution. China (Shaanxi, Liaoning), Norway, Czech Republic, Sweden, Russia, Japan, Canada (Vilkamaa et al., 2004; Heller et al., 2009).	en	Leng, Ruixin, Heller, Kai, Huang, Junhao, Ye, Lan, Wu, Hong (2018): DNA barcoding of the genus Dichopygina, with a new species from China (Diptera: Sciaridae). Zoological Systematics 43 (1): 18-26, DOI: 10.11865/zs.201802
03F687A9FFE9FFB0FF7868D26B4712DD.taxon	materials_examined	Material examined. Canada. 1 ♂, New Brunswick, Fundy National Park, Devil`s Halfacre Road (45 ° 35 ' 22 ″ N, 64 ° 57 ' 20 ″ W; elev. 61 m), 21 May 2013, leg. Shirley Butland (CNFDK 107 - 14) (BIOG); 1 ♂, New Brunswick, Kouchibouguac National Park, Near Park Compound, behind Research House (46 ° 46 ' 15 ″ N, 65 ° 00 ' 23 ″ W; elev. 61 m), malaise trap, 26 August 2013, leg. Bernard Martin (CNKOS 809 - 14) (BIOG). Finland. 2 ♂, Lapland, Rovaniemi, Sorvanulkki, herb-rich, old-growth boreal forest, malaise trap, 28 July 2014, leg. Jukka Salmela (SCILA 010 - 16, SCILA 009 - 16) (BIOG). Diagnosis. The morphological differences between D. perfecta and D. bernhardi are hereby confirmed. The gonostylus of D. perfecta has almost equal 7 – 9 thin and straight subapical megasetae in one group, whereas D. bernhardi has 10 – 13 megasetae at the apical half of the gonostylus and the basalmost megasetae longer than others. In addition, the tegmen of D. perfecta is equally rounded, while it is flatter in D. bernhardi. Redescription. Colour. Thorax bright brown; abdomen, hypopygium brown; legs yellow; wing hyaline or slightly darkened. Antenna unicolour and yellowish brown. Head. Eye bridge 2 – 3 facets wide. Antennal setae fine, dense, shorter than segment width. Length / width of flagellomere 4 of antenna 1.40 – 1.80; transition of basal part to neck pronounced (Fig. 3). Neck length / segment width 0.30 – 0.40. Maxillary palpus bright and 3 - segmented; basal segment with 1 bristles; 2 nd segment short, oval; 3 rd segment as long as basal segment; sensillae present. Thorax. Notum brown. Thoracic setae weak, white. Posterior pronotum bare. Mesothoracic sclerites bare. Wings (Fig. 4). Length 1.6 – 1.9 mm. bM, r-m bare; R 1 / R 0.60 – 0.80; c / w 0.63 – 0.72. Membrane without macrotrichia; venation weak, with faint stM; M-fork of normal shape; R 1 ending clearly before base of M-fork. Halter bright. Legs. Foretibia with dense patch of setae and curved margin; claws untoothed. Hind coxa of same colour as femora. Hind tibia 0.80 – 0.90 mm; Tibial spurs of equal length. Abdomen. Abdominal setae weak, sparse. Tergal setae white; sternal setae white. Hypopygium (Fig. 5). Hypopygium 0.5 – 0.7 times as long as wide. Base of gonocoxites with normal, weak hairs; gonocoxites narrowly separated; inner margin of gonocoxites U-shaped; inner membrane of hypopygium bare; gonostylus elongate, narrowed and curved (Fig. 2); 1.1 – 1.5 times longer than wide; inner margin straight, or concave in ventral view; apical part of gonostylus tapered. Apical tooth without internal structure, shorter than subapical megasetae; 1.1 – 1.7 times longer than broad. Awl-like setae absent. Innerside of gonostylus with 7 – 9 thin and straight subapical megasetae in one group. Position of basalmost megaseta 55 – 67 % from apex. Whiplash-hair absent. Tegmen 0.6 – 0.7 times as long as broad; equally rounded; without special structures; central process absent (Fig. 6). Aeadeagal apical structure and teeth absent. Remarks. The species is firstly recorded in Finland and Canada. Distribution. Finland, Canada, USA (Mohrig et al., 2013).	en	Leng, Ruixin, Heller, Kai, Huang, Junhao, Ye, Lan, Wu, Hong (2018): DNA barcoding of the genus Dichopygina, with a new species from China (Diptera: Sciaridae). Zoological Systematics 43 (1): 18-26, DOI: 10.11865/zs.201802
03F687A9FFEAFFBEFF786E656B191198.taxon	materials_examined	Material examined. Holotype, 1 ♂. China. Tibet, Bomi, Ganjing Guesthouse, light trap, 18 July 2014, leg. Jun Xu / Mei Qin (SM 02765) (SCILA 001 - 16) (ZAFU). Paratypes. 5 ♂, the same data as holotype (SM 02766 – 67, SM 02818 – 20) (SCILA 002 - 16, SCILA 003 - 16, SCILA 004 - 16, SCILA 005 - 16, SCILA 006 - 16) (ZAFU]. Diagnosis. The new species and D. bernhardi are similar to each other in having a rather straight gonostylus with all megasetae at the apical half of the gonostylus and the flatter top of tegmen. However, D. tibetana differs in having larger wings (wing length 1.6 – 1.8 mm versus 1.4 – 1.7 mm) and fewer gonostylar megasetae (6 – 8 versus 10 – 13). By its number of gonostylar megasetae and basalmost megasetae longer than the others, D. tibetana also resembles D. duplics. However, the new species can be distinguished by its larger wings (wing length 1.6 – 1.8 mm versus 1.2 – 1.4 mm) and broader eye bridge (facets wide 4 versus 3). Furthermore, D. tibetana resembles D. perfecta by sharing the very similar arrangement of the gonostylar megasetae, while the later species may easily be recognized by its equally rounded tegmen. Description. Colour. Thorax, abdomen, antennae and hypopygium brown; legs, palpus and wing veins yellowish brown; wings fumose. Antenna unicolour and yellowish brown. Head. Eye bridge 4 facets wide. Antennal setae fine, dense, shorter than segment width (Fig. 8). Length / width of flagellomere 4 of antenna 1.95 – 2.33; transition of basal part to neck pronounced; neck lengh / segment width 0.30 – 0.50, unicolour. Maxillary palpus 3 - segmented, basal segment with 1 seta; 2 nd segment with 6 – 8 setae; 3 rd segment with 5 – 7 setae; sensillae present (Fig. 10). Thorax. Notum brown. Thoracic setae weak, white. Anterior pronotum with 4 – 6 setae, episternum 1 with 4 – 8 setae. Wings (Fig. 7). Wing length 1.60 – 1.80 mm, width / length 0.43 – 0.46, R 1 / R 0.64 – 0.85, c / w 0.49 – 0.57. Membrane without macrotrichia. Venation weak, with faint stM; M-fork of normal shape; R 1 ending clearly before base of M-fork; bM, r-m bare. Halter bright, short. Legs. Foreleg: foretibia (Fig. 10) with dense patch of setae and curved margin; claws untoothed; length of basitarsomere / length of foretibia 0.55 – 0.60; length of femur / length of metatarsus 0.56 – 0.86. Length of metatarsus / length of tibia: foreleg 1.17 – 1.48, hind leg 0.85 – 0.97. Length of hind tibia / length of thorax 0.95 – 1.16. Abdomen. Abdominal setae weak, sparse. Tergal setae white. Sternal setae white. Hypopygium (Figs 9, 12). Hypopygium 0.6 – 0.8 times as long as wide. Base of gonocoxites with normal, weak hairs; gonocoxites wide and strong, narrowly separated; inner margin of gonocoxites U-shaped; inner membrane of hypopygium bare. Gonostylus elongated, narrowed and curved; 1.0 – 1.3 times longer than wide; inner margin straight, or concave in ventral view; apex tapered. Apical tooth without internal structure, shorter than subapical megasetae; 1.0 – 1.3 times longer than broad. Awl-like setae absent. With 6 – 8 megasetae in the apical half of the gonostylus and the basalmost megasetae longer than the others. Position of basalmost megaseta 42 – 44 % from apex. Whiplash-hair absent. Tegmen 0.70 – 0.75 times as long as broad, variable in shape, from subtrapezoidal to subtriangular, without sclerotized borders, with central process. Aeadeagal with apical structure and teeth. Distribution. China (Tibet). Etymology. This species is named after the Chinese province of its type locality, Tibet. Funding The work is financially supported by the National Natural Science Foundation of China (31372244), the Science and Technology Department of Zhejiang Province (2013 C 32082) and Norwegian Taxonomy Initiative (NTI) (Artsprosjektet, 70184228).	en	Leng, Ruixin, Heller, Kai, Huang, Junhao, Ye, Lan, Wu, Hong (2018): DNA barcoding of the genus Dichopygina, with a new species from China (Diptera: Sciaridae). Zoological Systematics 43 (1): 18-26, DOI: 10.11865/zs.201802
03F687A9FFEAFFBEFF786E656B191198.taxon	description	Acknowledgements We are grateful to Ms. Valérie Lévesque-Beaudin (Guelph, Canada) for the loan of Canadian Dichopygina specimens and to Mr. Björn Rulik (Bonn, Germany) for making available the sequences of Finnish specimens on BOLD and assistance with the treatment of the Chinese sequences.	en	Leng, Ruixin, Heller, Kai, Huang, Junhao, Ye, Lan, Wu, Hong (2018): DNA barcoding of the genus Dichopygina, with a new species from China (Diptera: Sciaridae). Zoological Systematics 43 (1): 18-26, DOI: 10.11865/zs.201802
