Homoneura ( Homoneura ) beijingensis Gao et Yang

Homoneura ( Homoneura) beijingensis Gao et Yang View in CoL , sp. nov.

( Figs. 1–11 View FIGURES 1 – 6 View FIGURES 7 – 11 )

Diagnosis. acr in 6–8 rows. Apical spots on R2+3, R4+5 and M1 extend to extreme vein tip, apical spots on R4+5 and M1 partly confluent, separated from apical spot on R2+3; apical spot on R2+3 with basal edge beyond dm-cu, apical spot on R4+5 with basal edge beyond that on M1; a spot slightly constricted at middle on dm-cu; apex of subcostal cell brownish. Male surstylus blunt, with a small process and a dorsally oriented long, sharp, interior process preapically.

Description. MALE. Body length 4.7–6.1 mm, wing length 4.6–5.7 mm. FEMALE. Body length 4.8–5.9 mm, wing length 4.8–5.7 mm.

Head ( Fig. 2 View FIGURES 1 – 6 ) yellow. Frons about as long as wide and parallel-sided; ocellar triangle without spot; oc developed, longer than anterior or and slightly shorter than posterior or; face without spots; gena about 1/7 height of eye. Antenna yellow, 1st flagellomere 2 times as long as wide; arista dark brown except yellow brownish at base, with longest hairs about as long as the height of 1st flagellomere. Proboscis yellow, with yellowish hairs and slightly dark hairs; palpus yellow, with dark hairs.

Thorax ( Fig. 3 View FIGURES 1 – 6 ) yellow. Mesoscutum with 1 sa, 1 ia, 0+3 dc (anteriormost dc clearly behind transverse scutal suture), acr in 6–8 rows, uniformly short hair-like; prsc about as long as anteriormost dc. Mesopleuron with 1 bristle on anepisternum and 2 bristles on katepisternum. Legs yellow. Fore femur with 3 pv and 5 pd, and ctenidium with 10 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 preapical ad and 3 apv. Hind femur with a row of weak av and 1 preapical ad; hind tibia with 1 weak preapical ad and 1 short apv. Wing ( Fig. 4 View FIGURES 1 – 6 ) tinged yellowish, apical spots on R2+3, R4+5 and M1 extending to extreme vein tip, apical spots on R4+5 and M1 partly confluent, separated from apical spot on R2+3; apical spot on R2+3 with basal edge beyond dm-cu, apical spot on R4+5 with basal edge beyond that on M1; a spot slightly constricted at middle on dm-cu; apex of subcostal cell brownish; costa with 2nd (between R1 and R2+3), 3rd (between R2+3 and R4+5) and 4th (between R4+5 and M1) sections in proportion of 2.5 mm: 0.75 mm: 0.5 mm; r-m before middle of cell dm; ultimate and penultimate sections of M 1 in proportion of 1.7 mm: 2.6 mm; ultimate section of CuA1 about 1/6 of penultimate. Halter yellow.

Abdomen ( Fig. 5 View FIGURES 1 – 6 ) yellow; tergites 2–5 with brownish posterior margin. Male genitalia ( Figs. 6–11 View FIGURES 1 – 6 View FIGURES 7 – 11 ): Protandrium circular with a large process anteriorly; surstylus blunt, with a dorsally oriented long, sharp, interior process preapically; hypandrium H-shaped, hypandrial apodemes distinct, with lateral margin irregular; gonopod with a trifurcated process and a coniform process; aedeagus with a small lateral process; aedeagal apodeme slightly shorter than aedeagus.

Type material. Holotype male ( CAU), CHINA, Beijing: Mentougou, Xiaolongmen Forest Park ( N 39°56', E 116°05', 1100 m), 9. VIII. 2002, Shuwen An. Paratypes: CHINA, Beijing: 1 male, 2 females ( CAU), same place as holotype, 10. VIII. 2002, Shuwen An; 1 female ( CAU), same place as holotype, 10. VIII. 2002, Caixia Gao; 1 male 1 female ( CAU), same place as holotype, 7. IX. 2008, Li Shi; 3 males 1 female ( CAU), same place as holotype, 14. VIII. 2009, Hui Yu; 42 males 26 females ( CAU), Mentougou, Liyuanling ( N 39°56', E 116°05', 1070 m), 22–25. IX. 1999, Ding Yang.

Distribution. China (Beijing).

Remarks. This species is somewhat similar to H. ( H.) henanensis from Henan. But it can be separated from the latter by the following fearures: body length 4.7–6.1 mm; fore femur with 3–4 pv; hypandrial apodeme visible; aedeagal apodeme more than half length of aedeagus. In henanensis , the body length is 6.8–7.0 mm; the fore femur has 2 pv; the hypandrium is narrowly banded; the aedeagal apodeme is obviously less than half length of aedeagus ( Yang, Zhu and Hu, 1999).

Etymology. The species is named after the type locality Beijing.