Homoneura (Homoneura) gaotangensis Gao & Shi 2019, sp. nov.

Homoneura (Homoneura) gaotangensis Gao & Shi sp. nov. (Figs 1−11)

Type material. Holotype ♂ (IMAU), CHINA, Shaanxi, Hua County, Gaotangzhen, 859 m, 8.VII.2013, Lei Zhang. Paratype. ♂ (IMAU), same data as holotype.

Diagnosis. The new species is similar to H. (H.) separata Yang, Hu & Zhu, 2002, but the latter has the following features: wing without brown transverse stripe on base of M 1, lower margin of dm-cu without brown extended spot, and surstylus short and broad at apex.

Description. Male. Body length 3.6−3.7 mm, wing length 3.6−3.7 mm.

Head (Figs 2−3) yellow. Frons about 1.5 times longer than wide. Inner vertical seta, anterior fronto-orbital seta and posterior fronto-orbital seta missing. Parafacial yellow with a row of short setulae on apical half of inner margin. Gena about 1/9 height of eye. Antenna yellow, 1st flagellomere 2.0 times longer than high; arista blackish brown, plumose, with longest ray as long as height of 1st flagellomere. Proboscis yellow. Palpus yellow with brown apex.

Thorax (Figs 1, 4) yellow. Mesonotum with a pair of brown middle stripes and a pair of brown lateral stripes, brown middle stripes extending beyond the second dorsal seta and then becoming a pale brown rectangular spot; 0+3 dorsocentral setae (1st postsutural dorsocentral seta behind transverse suture), acrostichal setae in 6 rows. Scutellum with brown median broad stripe. Legs mostly yellow, all tarsomeres 3–5 brown. Fore femur with 3 posterior dorsal setae, 2 posterior ventral setae and ctenidium with 9 short setae; fore tibia with 1 long preapical anterior dorsal seta and 1 short apicoventral seta. Mid femur with 6 anterior setae and 1 short apical posterior seta; mid tibia with 1 strong preapical anterior dorsal seta and 1 strong apicoventral seta. Hind femur with 1 preapical anterior dorsal seta and 1 anterior ventral seta; hind tibia with 1 long preapical anterior dorsal seta and 1 short apicoventral seta. Wing (Fig. 6) hyaline with several brown spots: one round spot present between r-m and subapical spot on R 4+5 slightly fused with subapical spot on R 2+3, both subapical spots on R 2+3 and R 4+5 extending upward to wing margin; preapical spot on M 1 separated from subapical spot on R 4+5; crossvein r-m and dmcu surrounded by a cloudy spot; a transverse stripe on base of M 1 and brown base of CuA 1; subcostal cell pale brown; 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 3.9:1.9:1; crossvein r-m at middle of discal cell; ultimate and penultimate sections of M 1 in proportion of 1:1.9; ultimate sections of CuA 1 about 1/11. Halter pale yellow.

Abdomen (Figs 1, 5) yellow. Male genitalia (Figs 7−11): syntergosternite 7+8 semicircular with long arms; epandrium broad, surstylus originated from anterior ventral corner, longer in lateral view and sharp at apex in posterior view; hypandrium narrow and stripe-like, hypandrial apodeme small; postgonite slender and sharp at apex; phallus broad columniform in lateral view; phallapodeme shorter than phallus.

Female. Unknown.

Distribution. China (Shaanxi).

Etymology. The new species is named after collecting locality Gaotang.