Homoneura (Homoneura) jiangi, 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 : 358

Homoneura (Homoneura) jiangi , new species

( Figs. 25-30 )

Material examined. – Holotype - male, Guangxi: Tianlin, Linaoshan (1100m), 14 Aug.2002, coll. Ding Yang ( CAU).

Paratypes – 4 males, 1 female, same data as holotype ( CAU & ZRC) .

Diagnosis. – Wing with 6 separate brown spots on tip of R 2+3 to M 1+2, preapical section of R 4+5, r-m and m-m; subcostal cell clear apically.

Description - Body length 3.9-4.5 mm (male) or 4.2 mm (female), wing length 3.8-4.5 mm (male) or 4 mm (female).

Head yellow, with yellow dust. Frons slightly longer than wide and parallel-sided, with 2 brown stripes; ocellar triangle black; oc undeveloped, and shorter than anterior or; face without spots; cheek about 1/5 height of eye. Antenna yellow; 3rd segment 1.4 times as long as wide; arista black except yellow base, with longest hairs shorter than width of 3rd antennal segment. Proboscis yellow, pale yellow apically, with black and yellow hairs; palpus yellow, with black hairs.

Thorax yellow, with yellow dust. 0+3 dc, acr in 6 rows, prsc about as long as 1st post-sutural dc. Legs yellow. Fore femur with 3 posterior ventral bristles, 4 posterior dorsal bristles, and ctenidium with 10-12 short bristles. Mid femur with 4 anterior bristles; mid tibia with 3 spurs. Wing pale yellow, dark on tip of R 2+3 to M 1+2, preapical section of R 4+5, r-m and m-m; costa with 2nd, 3rd and 4th sections in proportion of 27.5:8:5.7; r-m behind middle of discal cell; ultimate section of M 1+2 1.6 times as long as penultimate; ultimate section of M

3+4

about 1/6 of penultimate. Halter yellow.

Abdomen yellow, with yellow dust, with black spots at middle of tergites 4-6 and on two sides of tergites 5-6 in male; with black spots on two sides of tergite 6 in female. Male genitalia ( Figs. 26-30 ): Protandrium forming an incompletely sclerotized band, without setulae around spiracle; surstylus long ( Fig. 27 ); hypandrium with apodemes distinct, gonopod long and pointed apically; aedeagus long, pointed apically, with large semicircular apical incision.

Etymology. – The species is named after Prof. Guofang Jiang to express our sincere thanks for his help during the survey in 2002.

Distribution. – China (Guangxi).

Remarks. – The new species is somewhat similar to Homoneura (Homoneura) variinervis ( Kertész, 1913) from Java, but can be separated from the latter by the distinct hypandrial apodemes. In variinervis , the hypandrial apodemes are indistinct (Sasakawa & Ikeuchi, 1982).

Figures

Figs. 25-30. Homoneura jiangi, new species, male. 25. wing. 26. epandrium and protandrium, lateral view. 27. protandrium, anterior view. 28. aedeagal complex, lateral view. 29. aedeagal complex, ventral view. 30. epandrium, posterior view.