Homoneura ( Homoneura ) similicurvata, Gao & Shi, 2019

Homoneura ( Homoneura) similicurvata sp. nov.

( Figs 79−86 View FIGURES 79–86 , 87−91 View FIGURES 87–91 )

Description. MALE. Body length 6.3–6.4 mm, wing length 6.1–6.2 mm.

Head ( Figs 80−81 View FIGURES 79–86 ) yellow. Frons with a pair of pale brown stripes extending to ocellar triangle. Parafacial yel- low, a row of black short setulae on apical half of inner margin. Gena about 1/7 height of eye. Antenna yellow, 1st flagellomere about 1.5 times longer than high; arista blackish brown, ray as long setaceous, with longest ray as long as height of 1st flagellomere. Proboscis and palpus yellow.

Thorax ( Fig. 82 View FIGURES 79–86 ) yellow. Mesonotum with 0+3 dorsocentral setae (1st post–sutural dorsocentral setae behind the transversal suture), acrostichal setulae in irregular 6–8 rows. Legs mostly yellow, all tarsomeres 3–5 brown. Fore femur with 6 posterodorsal setae, 4 posteroventral setae and ctenidium with 11 short setae; fore tibia with 1 long preapical anterodorsal seta and 1 short apicoventral seta. Mid femur with 5 anterior setae and 1 short apicoposterior seta mid tibia with 1 strong preapical anterodorsal seta and 3 strong apicoventral setae. Hind femur with 1 preapical anterodorsal seta; hind tibia with 1 long preapical anterodorsal seta and 1 short apicoventral seta. Wing ( Fig. 86 View FIGURES 79–86 ) pale yellow, with brown apical spot on R 2+3 separated from that on R 4+5, brown apical spots on R 4+5 and M 1 slightly fused each other; costa with brown narrow stripe extending closely to brown apical spot on R 2+3 between tips of R 1 and R 2+3; a brown rectangular median spot on R 4+5 slightly contacted upper margin of brown stripe on dm-cu; subcostal cell brown; 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 5.4:1.3:1; r-m before middle of discal cell; ultimate and penultimate sections of M 1 in proportion of 1:1.5; ultimate sections of CuA 1 about 1/7. Halter pale yellow.

Abdomen ( Figs 83−84 View FIGURES 79–86 ) yellow, tergites 2–5 each with black narrow posterior margin. Male genitalia ( Figs 85 View FIGURES 79–86 , 87−91 View FIGURES 87–91 ): syntergosternite 7+8 circular (but sternal part flat); epandrium broad, surstylus with a short bar-like pro- cess in lateral view and a subapical concavity; hypandrium nearly Y-shaped with furcation on top; pregonite short triangular while postgonite hook-like and sharp at apex; phallus with a pair of curved triangular lateral processes at middle in ventral view while phallus with a deep dorsal concavity and curved backward at apex in lateral view; phallapodeme longer than phallus.

FEMALE. Body length 6.3 mm, wing length 6.2 mm.

Type material. CHINA, Shaanxi Province: Holotype ♂ ( IMAU), Foping County, Daguping , 1366.2 m, 22. VIII. 2014, Xiumei Lu . Paratypes ( IMAU): 1♂, Xi’an City, Chang’an District, Kuyu , 897 m, 31. VII. 2013, Xu- ankun Li ; 1♀, Baoji City, Feng County, Huangniupu , light trap, 1501 m, 21. VIII. 2013, Xiumei Lu .

Distribution. China ( Shaanxi).

Remarks. The new species is similar to Homoneura ( Homoneura) curvata Yang, Zhu & Hu, 1999 from China ( Henan), but the latter has the following features: the costal margin of wing lacking brown narrow stripe between tips of R 1 and R 2+3, the surstylus lacking concavity, and the phallus being broad and blunt at apex. The new species is also similar to Homoneura ( Homoneura) hirayamae (Matsumura, 1916) from China and Japan, but the latter has the following features: a brown apical spot on R 1 becoming a narrow stripe and only extending to half of distance between R 1 and R 2+3 along costal margin, and the surstylus being claviform, and the gonites being long with short setulae.

Etymology. Latin, simil -, meaning similar + curvata , meaning curved, referring to this species being similar to the species Homoneura ( Homoneura) curvata Yang, Zhu & Hu, 1999 ; a feminine adjective.