Three new species of the Homoneura (Homoneura) henanensis species group (Diptera, Lauxaniidae), with a key to Chinese species Author G, Junchao Wan Author Gao, Caixia Author Yang, Ding text Zootaxa 2012 3262 35 45 journal article 10.5281/zenodo.280717 df9db9c5-ba0f-4e95-8f0e-e6b3520949b9 1175-5326 280717 Homoneura ( Homoneura ) caoi Wang et Yang , sp. nov. ( Figs. 12–22 ) Diagnosis. acr in 10 somewhat irregular rows. Apical spots on R2+3, R4+5 and M1 separated, extending to extreme vein tip; apical spot on R2+3 with basal edge beyond dm-cu , apical spot on R4+5 with basal edge about same level with that on M1; a spot constricted at middle on dm-cu ; apex of subcostal cell hyaline. Male surstylus trifurcated, gonopod with 3 inward curved arc-shaped processes, aedeagus hook-shaped apically. Description. MALE. Body length 7.6–7.8 mm , wing length 7.7–7.8 mm . Head ( Fig. 13 ) yellow. Frons about as long as wide and parallel-sided; ocellar triangle without spot; oc developed, longer than anterior or and slightly shorter than posterior or ; face without spots; gena about 1/6 height of eye. Antenna yellow, 1st flagellomere 1.9 times as long as wide; arista dark brown except yellow brownish at base, with longest hairs about as long as the height of 1st flagellomere. Proboscis yellow, with yellowish hairs and slightly dark hairs; palpus yellow, with dark hairs. Thorax ( Fig. 14 ) yellow. Mesoscutum with 1 sa , 1 ia , 0+3 dc (anteriormost dc clearly behind transverse scutal suture), acr in 10 somewhat irregular rows, uniformly short hair-like; prsc about as long as anteriormost dc . Mesopleuron with 1 bristle on anepisternum and 2 bristles on katepisternum. Legs yellow. Fore femur with 4–5 pv and 7–8 pd , and ctenidium with 12–13 short bristles; fore tibia with 1 long preapical ad and 1 short apv . Mid femur with 5 a and 1 app ; mid tibia with 1 preapical ad and 4 apv . Hind femur with a row of weak av (only 2–3 apical bristles distinct) and 1 preapical ad ; hind tibia with 1 weak preapical ad and 1 short apv . Wing ( Fig. 15 ) tinged yellowish, apical spots on R2+3, R4+5 and M1 separated, extending to extreme vein tip; apical spot on R2+3 with basal edge beyond dm-cu , apical spot on R4+5 with basal edge about same level with that on M1; a spot constricted at middle on dm-cu ; apex of subcostal cell hyaline; 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 3.9 mm : 1.1 mm : 0.7 mm ; r-m before middle of cell dm; ultimate and penultimate sections of M 1 in proportion of 2.2mm : 2.0mm; ultimate section of CuA1 about 1/6.5 of penultimate. Halter yellow. FIGURES 12–17. Homoneura ( Homoneura ) caoi sp. nov. Male. 12. Habitus, lateral view; 13. head, dorsal view; 14. thorax, dorsal view; 15. wing; 16. abdomen, dorsal view; 17. male genitalia, lateral view. FIGURES 18–22. Homoneura ( Homoneura ) caoi sp. nov. Male. 18. protandrium and epandrium, lateral view; 19. protandrium, anterior view; 20. epandrium, posterior view; 21. aedeagal complex, ventral view; 22. aedeagal complex, lateral view. Abdomen ( Fig. 16 ) yellow; tergites 2–5 with very narrow brownish posterior margin. Male genitalia ( Figs. 17– 22 ): Protandrium circular; surstylus trifurcated, with long hairs; hypandrium H-shaped; gonopod with 3 inward curved arc-shaped processes; aedeagus hook-shaped apically, with a narrow apical incision; aedeagal apodeme shorter than aedeagus. Type material. Holotype male ( CAU ), CHINA , Sichuan Province : Emei Mountain, Linggongli ( N 29°32' , E 103°19' , 1270 m ), 30. VI. 2010 , Junchao Wang. Paratype : CHINA , Sichuan Province : 1 male ( CAU ), same data as holotype . Distribution. China (Sichuan). Remarks. This species is somewhat similar to H . ( H .) bispinalis from Zhejiang. But it can be separated from the latter by the surstylus trifurcated and the hypandrium H-shaped. In bispinalis , the surstylus is finger-like, and the hypandrium is nearly Y-shaped ( Yang, Hu and Zhu, 2001 ). Etymology. The species is named after Dr. Chengquan Cao to express our sincere thanks for his help during the survey in 2010.