Species of the subgenus Neohomoneura van der Wulp from Hainan in China (Diptera, Lauxaniidae) Author Shi, Li Author Yang, Ding text Zootaxa 2008 1793 28 46 journal article 10.5281/zenodo.182594 8d66a033-d38f-405d-aac0-804628273f72 1175-5326 182594 Homoneura ( Neohomoneura ) zengae sp. nov. ( Figs. 10 , 41–45 ) Diagnosis. Apical spot on R4+5 confluent with that on R2+3 but separated from spot on M1+2; spot on dm-cu constricted at middle. Male abdominal tergites 2–6 (female 2–7) each with dark posterior margin and male tergites 4–6 (female 4–7) each with a dark triangular median spot connected with dark posterior margin. Aedeagus short and wide with a wide apical incision. Description. MALE. Body length 5.9–6.8 mm , wing length 5.1–5.9 mm . FEMALE. Body length 6.1–6.3 mm , wing length 5.4–5.5 mm . Head brownish yellow. Frons about as long as wide and parallel–sided, with 2 brown stripes extending to ocellar triangle; ocellar triangle yellowish; oc developed, about as long as anteriormost or ; gena about 1/5 height of eye. Antenna yellow, 1st flagellomere 2.5 times as long as wide; arista brown except yellowish base, with longest hairs longer than width of 1st flagellomere. Proboscis yellow, with yellowish hairs; palpus yellow, with dark hairs. Thorax brownish yellow. Mesoscutum with 0+3 dc (anteriormost dc clearly behind transverse scutal suture), acr in 10 somewhat irregular rows, uniformly short hair–like; prsc slightly longer than 1st post– sutural dc . Legs yellow, tarsomeres 2–5 brownish yellow. Fore femur with 5–6 strong pv , 8–9 pd , and ctenidium with 15 short bristles; fore tibia with 1 long preapical ad and 1 short apv . Mid femur with 4–6 a and 1 app , mid tibia with 1 strong preapical ad , 8–10 short pd and 3 strong 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 strong apv ; 1st tarsomere with rows of short and dense v . Wing ( Fig. 10 ) slightly tinged yellowish, apical spot on R4+5 confluent with that on R2+3 but separated from spot on M1+2, apical spot on R4+5 with basal extremity at same vertical level or before apical spot on R2+3; a spot on dm-cu constricted at middle; 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+2) sections in proportion of 3.1: 0.8: 0.6; r-m before middle of discal cell; ultimate and penultimate sections of M1+ 2 in proportion of 1.8: 2.7; ultimate section of CuA1 about 1/7 of penultimate. Halter yellow. FIGURES 41–45. Homoneura ( Neohomoneura ) zengae sp. nov. Male. 41. protandrium and epandrium, lateral view; 42. protandrium, anterior view; 43. epandrium, posterior view; 44. aedeagal complex, ventral view; 45. aedeagal complex, lateral view. Abdomen brownish yellow, male tergites 2–6 (female 2–7) each with dark posterior margin and male tergites 4–6 (female 4–7) each with a dark triangular median spot connected with dark posterior margin. Male genitalia ( Figs. 41–45 ): protandrium circular with a ventral bridge and two hairs around spiracle; surstylus long with curved and obtuse tip; hypandrium H–shaped, hypandrial apodemes distinct but weak; gonopod long triangular; aedeagus short and wide, with a wide apical incision, and with two pairs of lateral and ventral spines. Type material. Holotype male, Hainan: Wuzhishan National Nature Reserve, Shuimanxiang ( 600 m ), 15. V. 2007 , Jie Zeng. Paratypes : 1 female , Hainan: data same as holotype ; 1 male , Hainan: Jianfengling National Nature Reserve, Mingfenggu ( 1000 m ), 25. X. 2007 , Xingyue Liu; 1 female , Hainan: Bawangling National Nature Reserve, Donger station ( 1000 m ), 22. X. 2007 , Xingyue Liu; 3 males , 1 female , Hainan: Yinggeling National Nature Reserve, Hongmao village ( 430 m ), 19. X. 2007 , Ding Yang; 1 male , 1 female , Hainan: Jianfengling National Nature Reserve, Zhiwuyuan ( 800 m ), 12. V. 2007 , Junhua Zhang; 1 male , Hainan: Jianfengling National Nature Reserve, Zhiwuyuan ( 800 m ), 22. V. 2007 , Gang Yao. Distribution. China (Hainan). Remarks. The new species is very similar to Homoneura ( Neohomoneura ) nadaensis Yang, Hu & Zhu from China (Hainan), but it can be separated from the latter by the protandrium circular with a ventral bridge, the hypandrium H–shaped, and the aedeagus short and wide with a wide apical incision. In H. nadaensis , the protandrium is semicircular; the hypandrium is U–shaped; and the aedeagus is longer with a narrow and deep apical incision. Etymology. The species is dedicated to Ms. Jie Zeng, who provided many specimens from her collection.