Five new species of the genus Tetroxyrhina Hendel from China (Diptera, Lauxaniidae) Author Shi, Li Author Gaimari, Stephen D. Author Yang, Ding text Zootaxa 2017 4247 3 246 280 journal article 33352 10.11646/zootaxa.4247.3.2 4aa941f3-5db6-4a15-8730-ce5f47fa50b9 1175-5326 438543 5A359FAB-FBD1-48EE-89C7-F32A1D38CE21 Tetroxyrhina sauteri ( Hendel, 1912 ) ( Figs 17–20 , 67–72 , 73–74 ) Trigonometopus sauteri Hendel, 1912 : 19 . Type locality: China: Taiwan, Nantou County, Chi-Chi (as Formosa: Chip-Chip). Sauteromyia sauteri . Malloch, 1927 : 164 . Diplochasma sauteri . Shewell, 1977 : 185 . Trigonometopus ( Tetroxyrhina ) alboapicalis Shatalkin, 1997 : 164 . Type locality: Vietnam : 70 km NW Hanoi , Ba Vi. Syn. nov . Tetroxyrhina alboapicalis . Papp, 2007 : 160 . (note, on page 161, Papp implies this species may be the same as Tetr. sauteri , but clearly lists it as a valid species) Tetroxyrhina sauteri . Papp, 2007 : 160 (note, species authorship incorrectly attributed to Malloch, 1927 ). Diagnosis. Frons with a broad brown rectangular stripe extending from anterior margin to ocellar triangle. Arista white, pubescent. Fore tarsomeres 2–5 brown to blackish brown. Wing mostly brown, clear hyaline surrounding darkened crossveins r-m and dm-cu; with crescent-shaped clear hyaline areas at margin between tips of R2+3 and R4+5, and R4+5 and M1. Abdominal tergites 1–5 each dark brown, with basal yellow areas. Redescription. MALE. Body length 3.4–4.3 mm , wing length 3.3–4.0 mm. FEMALE. Body length 3.4–4.3 mm , wing length 3.3–3.7 mm . Head ( Figs. 67–68, 70 , 73–74 ) yellow. Frons with a broad brown rectangular stripe extending from anterior margin to ocellar triangle, and with short setulae on anterior 1/2; nearly 2.2 times longer than wide and parallelsided; ocellar triangle grayish black; anterior fronto-orbital setae reclinate, shorter than the posterior; gena about 1/ 2 height of eye, with wide brown stripe. Antenna brownish yellow, with 1st flagellomere rounded apically, nearly 1.1 times longer than high; arista white, pubescent. Orbito-antennal spot distinct, present as a black velvety spot between eye and base of antenna. Proboscis mostly yellow except pale brown at tip; palpus yellow. Thorax ( Figs. 67–68 , 73–74 ) dark brown, with grayish white pruinosity. Mesonotum with narrow dorsocentral vittae and a narrow yellow median vitta, all extending through otherwise brown scutellum, with median stripe widening posteriorly to edge; 0+3 dorsocentral setae, acrostichal setulae in 4 rows; prescutellar acrostichal seta shorter than 1st postsutural dorsocentral seta; anepisternum and katepisternum blackish brown with grayish white pruinosity, a narrow yellow band along dorsal margin of anepisternum; 1 anepisternal seta, 1 katepisternal seta. Legs mostly yellow, except tibiae with blackish brown apical ring and fore tarsomeres 2–5 brown. Fore femur with 5 posteroventral setae and 8 posterodorsal setae; fore tibia with 1 preapical anterodorsal seta and 1 short apicoventral seta. Mid femur with 1 apicoposterior seta; mid tibia with 1 strong preapical anterodorsal seta, 1 strong apicoventral seta. Hind femur with 1 weak preapical anterodorsal seta; hind tibia with 1 preapical anterodorsal seta and 1 short apicoventral seta. Wing ( Fig. 71 ) mostly brown, clear hyaline surrounding darkened crossveins r-m and dm-cu; with crescent-shaped clear hyaline areas at margin between tips of R2+3 and R4+5, and R4+5 and M1; subcostal cell brown; costa with 2nd (between R1 and R2+3), 3rd (between R2+3 and R4+5) and 4th (between R4+5 and M1) sections in proportion of 6.3:1.3:1; crossvein r-m beyond middle of discal cell; ultimate and penultimate sections of M 1 in proportion of 1:1.4; ultimate section of CuA1 about 1/7 of penultimate. Halter yellow except knob blackish brown. FIGURES 17–20. Tetroxyrhina sauteri (Hendel, 1912) , male genitalia. 17–18. Epandrial complex: 17. lateral view; 18. posterior view. 19–20. Phallus complex: 19. ventral view; 20. lateral view. Scale 0.1 mm. Abdomen ( Figs. 67, 69 , 73 ) dark brown, with sparse grayish white pruinosity. Abodominal tergites 1–5 each with yellow areas basally, male tergite 6 and female tergites 6–7 with blackish brown posterior margin (yellow at middle of posterior margin in a few specimens), male sternite 6 membranous. Male genitalia ( Figs 17–20 , 72 ): epandrium with pair of short black conical dorsoapical processes in lateral view and a ventral bridge in posterior view; surstylus with short incurved digitiform process with setulae in lateral view; hypandrium very slender, with pair of broad lateral processes; phallus curled outward in ventral view and hooked apically in lateral view. Type material examined. Holotype male of Trigonometopus sauteri ( HNHM ): Formosa (= Taiwan ): Chip- Chip (= Nantou County , Chi-Chi ), II. 1909 , H. Sauter . Holotype male of Trigonometopus alboapicalis ( ZMUM ): Vietnam , pr. Hanoi , 70 km NW Hanoi , Ba Vi , 400m forest, 22. XI.1990 , leg. E. Nartshuk . Paratype female of Trigonometopus alboapicalis ( ZMUM ): Vietnam , pr. Ha Son Binh , Ky Son , Cao Phong , 29. X.1990 , leg. E. Nartshuk . Additional material examined. CHINA , Hainan Province : 1 male ( CAUC ), Baisha , Nankai , Mohao village , 860 m , 29. IV. 2008 , Qifei Liu ; 1 female (CAUC), Baisha, Yinggeling National Nature Reserve, 2. VI. 2006 , Hui Dong; 1 female ( CAUC ), Changjiang , Bawangling National Nature Reserve , Dong’er station , 1000 m , 25. V. 2007 , Junhua Zhang ; 1 male (CAUC), Danzhou City, Nada, Liangyuan, 8. V. 2007 , Junhua Zhang; 1 male ( USNM ), Tui Muntung , 28. III. 1936 , A.L. Melander Collection 1961. CHINA , Yunnan Province : 2 males, 1 female (CAUC), Menglun No. 55 area, 920 m , 24. IV. 2007 , Wenliang Li; 2 males, 2 females (CAUC), Menglun No. 55 area, 920 m , 24. IV. 2007 , Hui Dong; 1 male ( CAUC ), Mengla , Menglun zhiwuyan, rain forest, 22. IV. 2007 , Hui Dong. CHINA , Zhejing Province : 1 male ( CAUC ), Zhejiang : Shunxi , Zhiyuan , 23. VII. 2007 , Yajun Zhu ; 1 male ( CAUC ), Lin’an , Tianmushan , 18. VII. 2007 , Yajun Zhu. VIETNAM : 1 female ( USNM ), Cochin China (currently southern Vietnam ), Biên Hòa Province (currently Đỗng Nai Province ), Tr ảng Bom arboretum, VIII. 1932 , M. Poilane ; 1 female ( CSCA ), Ninh Binh Province , Cuc Phuong National Park , 390 m , 20°21’03”N 105°35’36”E , (12-09), SD Gaimari, M Hauser, Pham HT , 24–28. III. 2012 , ex. Malaise trap . Distribution. China ( Yunnan , Zhejiang , Hainan , Taiwan ) , Thailand , Vietnam .