Homoneura (Homoneura) kuankuoshuiensis Wang et Ya

G, Junchao Wan, Gao, Caixia & Yang, Ding, 2012, Three new species of the Homoneura (Homoneura) henanensis species group (Diptera, Lauxaniidae), with a key to Chinese species, Zootaxa 3262, pp. 35-45 : 42-45

Homoneura (Homoneura) kuankuoshuiensis Wang et Ya n g, sp. nov.

( Figs. 23–33 )

Diagnosis. acr in 10 somewhat irregular rows. Apical spots on R2+3, R4+5 and M1 separated, extending to extreme vein tip; 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 constricted at middle on dm-cu; apex of subcostal cell hyaline. Male surstylus very broad in both lateral and posterior view, with a ventrally oriented sharp process subapically.

Description. MALE. Body length 5.6–6.6 mm, wing length 5.4–6.3 mm.

Head ( Fig. 24 ) yellow. Frons about as long as wide and parallel-sided; ocellar triangle without spot; oc developed, about as long as anterior or and slightly shorter than posterior or; face without spots; gena about 1/5 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. 25 ) yellow. Mesoscutum with 1 sa, 1 ia, 0+3 dc (anteriormost dc clearly behind transverse scutal suture), acr in 10 somewhat irregular rows, uniformly short hair-like; prsc longer than anteriormost dc. Mesopleuron with 1 bristle on anepisternum and 2 bristles on katepisternum. Legs yellow. Fore femur with 4 pv and 6 pd, and ctenidium with 15 short bristles; fore tibia with 1 long preapical ad and 1 short apv. Mid femur with 5 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. 26 ) tinged yellowish, apical spots on R2+3, R4+5 and M1 separated, extending to extreme vein tip; 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 constricted at middle on dm-cu; apex of subcostal cell hyaline; 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 3.4 mm: 1.0 mm: 0.6 mm; r-m before middle of discal cell; ultimate and penultimate sections of M 1 in proportion of 1.8 mm: 3.3 mm; ultimate section of CuA1 about 1/7 of penultimate. Halter yellow.

Abdomen ( Fig. 27 ) yellow; tergites 2–5 with brownish posterior margin. Male genitalia ( Figs. 28–33 ): Protandrium circular; surstylus very broad in both lateral and posterior view, with a ventrally oriented sharp process subapically, with long hairs; hypandrium W-shaped, or H-shaped with lateral arms divergent distally, hypandrial apodemes small; gonopod with an inward curved triangular process and a subuliform process; aedeagus columniform with a deep apical incision in ventral view, and with a blunt dentation dorsally in lateral view; aedeagal apodeme slightly shorter than aedeagus.

Type material. Holotype male ( CAU), CHINA, Guizhou Province: Suiyang, Kuankuoshui Nature Reserve (N 28°14ʹ, E 107°11ʹ, 1400 m), 15. VIII. 2010, Guoquan Wang. Paratypes: CHINA, Guizhou Province: 4 males ( CAU), same data as holotype; 1 male ( CAU), same place as holotype, 13. VIII. 2010, Sipei Liu.

Distribution. China (Guizhou).

Remarks. This species is somewhat similar to H. (H.) bispinalis from Zhejiang. But it can be separated from the latter by the surstylus very broad and the hypandrium H-shaped. In bispinalis , the surstylus is finger-like, the hypandrium is nearly Y-shaped ( Yang, Hu and Zhu, 2001).

Etymology. The species is named after the type locality Kuankuoshui Nature Reserve.

Figures

FIGURES 23 – 29. Homoneura (Homoneura) kuankuoshuiensis sp. nov. Male. 23. Habitus, lateral view; 24. head, dorsal view; 25. thorax, dorsal view; 26. wing; 27. abdomen, dorsal view; 28. aedeagal complex, lateral view; 29. aedeagal complex, ventral view.

FIGURES 30 – 33. Homoneura (Homoneura) kuankuoshuiensis sp. nov. Male. 30. epandrium [protandrium broken], lateral view; 31. epandrium, posterior view; 32. aedeagal complex, lateral view; 33. aedeagal complex, ventral view.