Homoneura ( Homoneura ) dulongjiangica, Li & Yang, 2012

Homoneura ( Homoneura) dulongjiangica View in CoL sp. nov.

( Figs. 5, 16, 27, 62–66)

Diagnosis. Face with a large blackish brown median spot. Antenna blackish brown except yellow basal half of 1st flagellomere. Mesoscutum with a pair of brownish yellow lateral stripes. Wing with a narrow brown stripe on dmcu. Abdominal tergites 1–5 entirely black, tergite 6 yellow with a black median spot.

Description. MALE. Body length 4.1 mm, wing length 4.3 mm. FEMALE. Body length 4.8mm, wing length 5.3 mm.

Head ( Fig. 5) pale yellow. Face with a large blackish brown median spot. Frons about as long as wide and parallel-sided, with two narrow blackish gray stripes along or rows and a narrow brown triangular median stripe extending to ocellar triangle; ocellar triangle grayish black; oc strong, about as long as anterior or, anterior or slightly shorter than posterior or. Gena about 1/7 height of eye. Occiput with a wide grayish black stripe confluent with ocellar triangle, upper half of occiput usually with a large brown spot on each side, not extending to top margin of eye. Antenna blackish brown except yellow basal half of 1st flagellomere, 1st flagellomere 1.6 times longer than high; arista long plumose, black except brownish basally, with longest hairs longer than height of 1st flagellomere. Proboscis yellowish brown with yellowish and blackish hairs; palpus pale yellow with blackish hairs.

Thorax ( Fig. 16) blackish brown with grayish white pruinescence. Mesoscutum with a pair of brownish yellow lateral stripes. 0+3 dc (anterior dc clearly behind transverse scutal suture), acr in 8 somewhat irregular rows. Anepisternum and pteropleuron brownish yellow, katepisternum yellow except brownish yellow anterior dorsal corner. Scutellum brownish black except yellow apical margin, with yellowish gray pruinescence. Legs pale yellow; hind tibia with an incomplete brown basal ring. Fore femur with 4 strong pv and 5 pd, ctenidium with 7 short bristles; fore tibia with 1 long preapical ad and 2 short apv. Mid femur with 4 a and 1 apv; mid tibia with 1 strong preapical ad and 3 strong apv. Hind femur with 1 preapical ad; hind tibia with 1 weak preapical ad and 1 short apv. Wing ( Fig. 27) slightly yellow, with a narrow brown stripe on dm-cu; subcostal cell hyaline; costa with 2nd (between R 1 and R 2+3), 3rd (between R 2+3 and R 4+5) and 4th (between R 4+5 and M 1) sections in proportion of 2.1: 0.7: 0.4; r-m before middle of discal cell; ultimate and penultimate sections of M 1 in proportion of 1.5: 1; ultimate section of CuA 1 about 1/5 of penultimate. Halter pale yellow.

Abdomen yellow with sparse silvery white pruinescence; tergites 1–5 entirely black, tergite 6 yellow with a black median spot. Male genitalia ( Figs. 62–66): protandrium circular; epandrium with anterior margin curved in lateral view; surstylus incurved claviform; hypandrium with a pair of short broad ventral processes and hypandrial apodeme long; gonopod columniform; aedeagus without distinct incision, with a pair of median lateral processes, a pair of dorsal sclerites and apex trifurcated.

Type material Holotype ♂ ( CAU), CHINA, Yunnan Province: Nujiang, Gongshan, Dulongjiang Road (20K), 20. V. 2007, Xingyue Liu.

Distribution. China ( Yunnan).

Remarks. The new species is somewhat similar to Homoneura ( Homoneura) immaculata (Meijere) from the Oriental region in the following characters: face with spots; 1st flagellomere blackish brown; acr in 8 somewhat irregular rows; abdominal tergites 1–5 entirely blackish brown; surstylus extended from basal half of epandrium, claviform; hypandrium with a pair of short broad ventral process and hypandrial apodeme long. But it can be separated from the latter by the following features: face with a large blackish brown median spot; wing with a narrow brown stripe on dm-cu; abdominal tergite 6 with a black median spot; surstylus incurved; aedeagus without distinct incision, and with a pair of median lateral processes, a pair of dorsal sclerites and apex trifurcated. In H. ( H.) immaculata , the face has a pair of brown median spots; the wing is hyaline; the abdominal tergite 6 has no spot; the surstylus is not incurved; the aedeagus has a distinct apical incision, the aedeagal dorsal sclerites is not trifurcated at apex ( Sasakawa 1992).

Etymology. The new species is named after the type locality Dulongjiang.