Homoneura (Homoneura) tianeensis, Gao & Yang, 2004

Gao, Caixia & Yang, Ding, 2004, A Review Of The Genus Homoneura From Guangxi, China (Diptera: Lauxaniidae), Raffles Bulletin of Zoology 52 (2), pp. 351-364 : 361

Homoneura (Homoneura) tianeensis , new species

( Figs. 37-42 )

Material examined. – Holotype - male, Guangxi: Tian’e, Xinglonglinchang (1100m), 4 Aug.2002, coll. Ding Yang ( CAU).

Diagnosis. – Wing with 5 brown spots on tip of R 2+3 to M 1+2, preapical section of R 4+5 and m-m, apical spots on R 2+3 to M 1+2 more or less connected; subcostal cell dark apically.

Description. – Body length 8.5 (male) mm, wing length 8.5(male) mm.

Head yellow, with yellow dust. Frons about as long as wide and slightly converging backward, with dark anterior spots; ocellar triangle yellow brown; oc developed; face without spots; cheek about 1/7 height of eye. Antenna yellow; 3rd segment 2 times as long as wide; arista black except yellow base, with longest hairs as long as width of 3rd antennal segment. Proboscis yellow, with black and yellow hairs; palpus yellow, with black hairs.

Thorax yellow, with yellow dust; scutellum testaceous. 0+3 dc, acr in 10 rows, 1st post-sutural dc broken. Legs yellow. Fore femur with 4 posterior ventral bristles, 5 posterior dorsal bristles, and ctenidium with 12 short bristles. Mid femur with 7 anterior bristles; mid tibia with 3 spurs. Wing pale yellow, dark on apex of subcostal cell, tip of R 2+3 to M 1+2, preapical section of R 4+5 and m-m; costa with 2nd, 3rd and 4th sections in proportion of 8:2:1.5; r-m before middle of discal cell; ultimate section of M 1+2 1.2 times as long as penultimate; ultimate section of M 3+4 about 1/5 of penultimate. Halter yellow.

Abdomen yellow, with yellow dust. Male genitalia ( Figs. 38- 42 ): Protandrium forming a sclerotized band with a ventral segment, with a dorsal protuberance directed forward, without setulae around spiracle ( Fig. 39 ); surstylus on epandrium with distinct inner process; hypandrial apodemes rather weak, gonopod long and rolling up apically; aedeagus long, distinctly incised apically ( Fig. 42 ).

Etymology. – The species is named after the type locality Tian’e.

Distribution. – China (Guangxi).

Remarks. – The new species is similar to Homoneura (Homoneura) yaromi Yang, Hu & Zhu, 2001 , from Zhejiang, but can be separated from the latter by frons with spots. In yaromi , the frons has no spots (Yang, Hu & Zhu, 2001).

Figures

Figs. 37-42. Homoneura tianeensis, new species, male. 37. wing. 38. epandrium and protandrium, lateral view. 39. protandrium, anterior view. 40. epandrium, posterior view. 41. aedeagal complex, lateral view. 42. aedeagal complex, ventral view.