Homoneura (Homoneura) longispina, 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 : 358-361

Homoneura (Homoneura) longispina , new species

( Figs. 31-36 )

Material examined. – Holotype - male, Guangxi: Tianlin, Langping , 30 May.1982, coll. Xinli Wang ( CAU).

Paratypes – 1 male, Guangxi: Tianlin, Langping , 30 May.1982, coll. Jikun Yang ( CAU) ; 1 female, Guangxi: Longsheng, Cujiang , 24 Jun.1982, coll. Jikun Yang ( CAU) .

Diagnosis. – Wing with 5 brown spots on tip of R 2+3 to M 1+2, m-m, and preapical section of R 4+5; surstylus with long spinelike inner process.

Description. – Body length 7.3-8.0 mm (male) or 7.3 mm (female), wing length 8.3-8.7 mm (male) or 7.6 mm (female).

Head yellow, with dense yellow white dust. Frons broader than long, parallel-sided, with 2 pale brown stripes; ocellar triangle brown; oc developed, and as long as anterior or; face without spot. Cheek about 1/6 height of eye. Antenna yellow; 3rd segment yellow brown, 2 times as long as wide, yellow basally; arista black except testaceous base, with longest hairs as long as width of 3rd antennal segment. Proboscis yellow brown, its apex white yellow, with black and yellow hairs; palpus yellow, with black hairs.

Thorax yellow, with yellow dust. 0+3 dc, acr in 10 rows, prsc longer than 1st post-sutural dc. Legs yellow. Fore femur with 4 posterior ventral bristles, 7-9 posterior dorsal bristles, and ctenidium with 12-13 short bristles. Mid femur with 6- 8 anterior bristles, mid tibia with 3 spurs. Wing pale yellow, with 5 brown spots on tip of R 2+3 to M 1+2, m-m, and preapical section of R 4+5; costa with 2nd, 3rd and 4th sections in proportion of 22.2:4.5:3.5; r-m before middle of discal cell; ultimate section of M 1+2 as long as penultimate; ultimate section of M

3+4

about 1/6 of penultimate. Halter yellow.

Abdomen yellow to brown, with dense gray dust. Male genitalia ( Figs. 32-36 ): Protandrium long and broad, forming a sclerotized band with a ventral segment, without setulae around 7th spiracle ( Fig. 33 ); surstylus on epandrium with inner processs long spine-like and haired; hypandrial apodemes indistinct, gonopod long with curved apex; aedeagus with two dorsal hamuli at tip, and weakly incised apically ( Fig. 36 ).

Etymology. – The species is named after the surstylus with long spine-like inner process.

Distribution. – China (Guangxi).

Remarks. – The new species is similar to Homoneura (Homoneura) serrata Gao & Yang, 2002 , from Guizhou and

Guangxi, but can be separated from the latter by the acr in 10 rows and aedeagus not dentate. In serrata , the acr is in 6-8 rows, and the aedeagus is dentate ( Gao & Yang, 2002).

Figures

Figs. 31-36. Homoneura longispina, new species, male. 31. wing. 32. epandrium and protandrium, lateral view. 33. protandrium, anterior view. 34. epandrium, posterior view. 35. aedeagal complex, lateral view. 36. aedeagal complex, ventral view.