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 ) tripetata sp. nov. ( Figs. 9 , 36–40 ) Diagnosis. Fore femur with 4 strong pv , hind tibia with 1 very long ad . A stripe–like spot on dm-cu . Cerci with long hairs. Aedeagus with a pair of knife–like long lateral processes, a short and a long dorsal process in lateral view. Description. MALE. Body length 5.0– 5.4 mm , wing length 4.6–5.5 mm . Head yellowish to brownish yellow. Frons about as long as wide and parallel–sided, with 2 brown stripes extending to ocellar triangle; ocellar triangle brownish; oc developed, longer than anteriormost or ; gena about 1/7 height of eye. Antenna yellow; 1st flagellomere 1.9 times as long as wide; arista dark except brownish base, with longest hairs as long as width of 1st flagellomere. Proboscis yellow, with yellowish and dark hairs; palpus yellow, with dark hairs. FIGURES 31–35. Homoneura ( Neohomoneura ) tricuspidata sp. nov. Male. 31. protandrium and epandrium, lateral view; 32. protandrium, anterior view; 33. epandrium, posterior view; 34. aedeagal complex, ventral view; 35. aedeagal complex, lateral view. FIGURES 36–40. Homoneura ( Neohomoneura ) tripetata sp. nov. Male. 36. protandrium and epandrium, lateral view; 37. protandrium, anterior view; 38. epandrium, posterior view; 39. aedeagal complex, ventral view; 40. aedeagal complex, lateral view. Thorax yellowish to brownish yellow. Mesoscutum with 0+3 dc (anteriormost dc clearly behind transverse scutal suture), acr in 8 somewhat irregular rows, uniformly short hair–like; prsc as long as 1st post– sutural dc . Legs yellowish to brownish yellow. Fore femur with 4 strong pv , 8 pd , and ctenidium with 11 short bristles; fore tibia with 1 long preapical ad and 1 short apv . Mid femur with 6 a and 1 app , mid tibia with 1 strong preapical ad , 5 short pd and 3 strong apv . Hind femur with a row of weak av (only 3 apical bristles distinct) and 1 preapical ad ; hind tibia with 1 very long strong preapical ad and 1 short apv ; 1st tarsomere with rows of short and dense v . Wing ( Fig. 9 ) slightly tinged yellowish, spots on R4+5 and R2+3 confluent (or narrowly separated) and contacted with spot on M1+2, apical spot on R4+5 with basal extremity at same vertical level or before that on R2+3; a stripe–like spot on dm-cu ; 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 2.56: 0.73: 0.51; r-m before middle of discal cell; ultimate and penultimate sections of M1+ 2 in proportion of 1.54: 2.20; ultimate section of CuA1 about 1/11 of penultimate. Halter yellow. Abdomen yellowish to brownish yellow. Male genitalia ( Figs. 36–40 ): protandrium semicircular with hairs; epandrium with long bristles; surstylus very short and obtuse apically, with a short thick inner process visible in posterior view; hypandrium V–shaped; gonopod slender with 1 bristle; aedeagal apodeme short; aedeagus very complex in structure, with a pair of knife–like long lateral processes, a short and a long dorsal process in lateral view. Cerci with long hairs. FEMALE. Unknown. Type material. Holotype male, Hainan: Jianfengling National Nature Reserve, Zhiwuyuan ( 800 m ), 24. X. 2007 , Ding Yang. Paratypes : 1 male , data same as holotype ; 1 male , Hainan: Yinggeling National Nature Reserve, Hongmao village ( 430 m ), V. 22. 2007 , Kuiyan Zhang. Distribution. China (Hainan). Remarks. The new species is similar to Homoneura ( Neohomoneura ) longiseta Sasakawa from Vietnam in the hind tibia with one very long ad , but it can be separated from the latter by the surstylus very short, the aedeagus with a pair of knife–like long lateral processes, a short and a long dorsal process in lateral view and the male abdominal tergites without any spots. In longiseta , the surstylus is long; the aedeagus has no dorsal process but with a trifurcated lateral process; the male abdominal tergites 2–6 have spots ( Sasakawa, 2001 ). Etymology. Latin, feminine, ‘ tripetata ’ = tripetaloid, referring to the aedeagus tripetaloid in ventral view.