Body with yellow or brownish hairs and bristles, small first flagellomere, most males with hind tarsomere 1 bearing several short black ventral bristles at base, and males with mid tarsomere 1 at least as long as the total of corresponding tarsomeres 2-4, male genitalia with 1-2 subepandrial processes, lateral epandrial lobe distinct.

Acr 5–6 irregularly paired. Mid and hind tibiae each with 2 ad and 2 pd. Fore, mid and hind tarsomere 1 each with row of 5–7 v. Epandrium apically with long and wide lateral process, trifurcated apically; surstylus long and curved inward apically, with hook curved backwards.

Male. Body length 2.25–2.45 mm, wing length 2.30–2.45 mm.

Head metallic green with gray pollen; frons and face brilliant. Hairs and bristles on head yellow. Ocellar tubercle weak, with 2 very long oc and 2 very short posterior hairs. Lower postocular bristles (including ventral hairs) pale. Antenna (Fig. 1) blackish; first flagellomere blackish, rather short, about 0.5 times as long as wide; arista dorsal, with basal segment very short. Proboscis brown, with brown hairs; palpus pale yellow, with pale hairs and 2 pale yellow apical bristles.

Thorax metallic green with pale gray pollen, mesonotum and scutellum brilliant. Hairs and bristles on thorax yellow; 6 dc, 5–6 irregularly paired acr short and hair-like; scutellum with 2 pairs of bristles. Propleuron with 1 pale bristle on lower portion. Legs including coxae yellow with 5th tarsomere brown. Hairs and bristles on legs yellow; coxae with yellowish hairs and bristles; fore coxa with 3–4 anterior and apical bristles, mid coxa with 2–3 anterior and apical bristles, hind coxa with 1 brown outer bristle near middle. Mid femur with 1 av apically; hind femur with 1 short av and 1 short pv apically. Mid tibia with 2 ad and 2 pd, apically with 4 bristles; hind tibia with 2 ad and 2 pd, apically with 3 bristles. Fore and mid tarsomere 1 each with row of 6–7 v. Hind tarsomere 1 with 6-8 short and thick black ventral bristles at base, and row of 5–6 pv. Relative lengths of tibia and 5 tarsomeres of legs. LI 2.4 : 1.4 : 0.6 : 0.5 : 0.3 : 0.3; LII 3.3 : 2.1 : 0.8 : 0.6 : 0.4 : 0.3; LIII 3.5 : 1.4 : 0.9 : 0.6 : 0.4 : 0.3.

Wing hyaline; veins brownish, R₄₊₅ and M parallel apically; CuAx ratio 0.3. Squama yellow with pale yellow hairs. Halter pale yellow.

Abdomen metallic green with pale gray pollen, dorsum brilliant, sterna 1-2 yellow. Hairs and bristles on abdomen brown.

Male genitalia (Figs 2–3) dark brown: Epandrium distinctly longer than wide, apically with long and wide lateral process, trifurcated apically; surstylus long and curved inward apically, with curved backwards hook; cercus round, with moderately long hairs; hypandrium indistinct.

Female. Unknown.

Holotype ♂, Hubei: Shennongjia, Dalongtan pound (31°75'N, 110°67'E), 30.VI.2009, Qifei Liu. Paratypes, 12♂♂, same data as holotype; 5♂♂, Hubei: Shennongjia, Dapingqian (31°75'N, 110°67'E), 7. VII. 2009, Qifei Liu. Type specimens are stored in 75% ethanol.

Known only from the type locality in Hubei.

This new species is similar to Chrysotimus acutatus Wang, Yang & Grootaert, but may be separated from the latter by 2 ad on hind tibia, and and by the long, wide, trifurcated lateral process on epandrium. In Chrysotimus acutatus, the hind tibia has 1 ad, and the lateral epandrial process is short and bifurcated (Wang et al. 2005).

The specific epithet is derived from the type locality Dalong (Hubei).

First flagellomere somewhat trapeziform, about 0.8 times as long as wide. Acr absent. Hind tibia with 1 ad, 3 pd and row of v. Hind tarsomere 1 with 18–20 short and thick black ventral bristles at base. Epandrium apically with wide lateral process, process truncate apically; surstylus curved and somewhat swollen apically.

Male. Body length 2.1–2.3 mm, wing length 2.0–2.3 mm.

Head metallic green with gray pollen; frons and face brilliant. Hairs and bristles on head yellow. Ocellar tubercle weak, with 2 very long oc and 2 very short posterior hairs. Lower postocular bristles (including ventral hairs) pale. Antenna (Fig. 4) blackish; first flagellomere blackish, somewhat trapeziform, rather short, about 0.8 times as long as wide; arista dorsal, with basal segment very short. Proboscis dark brown, with blackish hairs; palpus pale yellow, with pale hairs and 2 pale yellow apical bristles.

Thorax metallic green with pale gray pollen, mesonotum and scutellum brilliant. Hairs and bristles on thorax yellow; 6 dc, no acr; scutellum with 2 pairs of bristles. Propleuron with 1 pale bristle on lower portion. Legs including coxae yellow with 5th tarsomere brown. Hairs and bristles on legs brown; coxae with yellowish hairs and bristles; mid and hind coxae each with 1 brown outer bristle. Mid and hind femura each with 1 av apically. Mid tibia with 2 ad and 2 pd, apically with 4 bristles; hind tibia with 1 ad, 3 pd and one row of v, apically with 3 bristles. Hind tarsomere 1 with 18-20 short and thick black ventral bristles at base. Relative lengths of tibia and 5 tarsomeres of legs. LI 3.2 : 2.2 : 0.9 : 0.7 : 0.6 : 0.6; LII 4.2 : 2.6 : 0.9 : 0.6 : 0.4 : 0.3; LIII 5.6 : 2.4 : 1.3 : 1.0 : 0.7 : 0.6.

Winghyaline; veins brownish, R₄₊₅ and M parallel apically; CuAx ratio 0.23. Squama pale yellow with yellow hairs. Halter pale yellow.

Abdomen metallic green with pale gray pollen, dorsum brilliant, sterna 1-4 yellow. Hairs and bristles on abdomen yellow.

Male genitalia (Figs 5–6) dark brown: Epandrium distinctly longer than wide, apically with wide lateral process, process truncate apically; surstylus long and finger-like, curved and somewhat swollen apically; cercus round, with moderately long hairs; hypandrium shorter than epandrium.

Female. Unknown.

Holotype ♂, Beijing: Huairou, Labagou (40°32'N, 116°63'E), 29.VII.2009, Yan Li. Paratype 1 ♂, same data as holotype. Type specimens are stored in 75% ethanol.

Known only from the type locality in Beijing.

This new species is similar to Chrysotimus dorsalis Yang, but may be separated from the latter by the single row of v on the hind tibia, and slender surstylus. In Chrysotimus dorsalis, the hind tibia lacks row of v, and the surstylus is wide (Yang 2001).

The specific epithet derives from the type locality Huairou (Beijing).

Acr 4–5 irregularly paired. Hind tarsomere 1 with 4–5 short and thick black ventral bristles at base. Epandrium apically with short and wide lateral process, acute apically.

Male. Body length 2.5–2.7 mm, wing length 2.4–2.6 mm.

Head metallic green with gray pollen; frons and face brilliant. Hairs and bristles on head yellow. Ocellar tubercle weak, with 2 very long oc and 2 very short posterior hairs. Lower postocular bristles (including ventral hairs) pale. Antenna blackish; first flagellomere (Fig. 7) blackish, rather short, about 0.6 times as long as wide; arista dorsal, with basal segment very short. Proboscis brown, with brown hairs; palpus pale yellow, with pale hairs and 2 pale yellow apical bristles.

Thorax metallic green with pale gray pollen, mesonotum and scutellum brilliant. Hairs and bristles on thorax yellow; 6 dc, 4–5 irregularly paired acr short and hair-like; scutellum with 2 pairs of bristles. Propleuron with 1 brown bristle on lower portion. Legs including coxae yellow with 5th tarsomeres brown. Hairs and bristles on legs dark yellow; coxae with yellowish hairs and bristles; fore coxa with 6–7 anterior and apical bristles, mid coxa with 2–3 anterior and apical bristles, hind coxa with 1 brown outer bristle near middle. Mid femur with 1 av apically; hind femur with 1 short av and 1 short pv apically. Mid tibia with 2 ad and 2 pd, apically with 3 bristles; hind tibia with 2 ad and 1 pd, apically with 3 bristles. Hind tarsomere 1 with 4-5 short and thick black ventral bristles at base. Relative lengths of tibia and 5 tarsomeres of legs. LI 4.5 : 2.3 : 1.2 : 0.9 : 0.6 : 0.7; LII 6.2 : 3.4 : 1.4 : 1.0 : 0.5 : 0.5; LIII 6.8 : 2.8 : 1.8 : 1.2 : 1.0 : 0.6.

Wing hyaline; veins brownish, R₄₊₅ and M parallel apically; CuAx ratio 0.3. Squama dark yellow with brown hairs. Halter pale yellow.

Abdomen metallic green with pale gray pollen, dorsum brilliant, sterna 1-2 yellow. Hairs and bristles on abdomen brown.

Male genitalia (Fig. 8) dark brown: Epandrium distinctly longer than wide, apically with short and wide lateral process, process acute apically; surstylus slender and finger-like; cercus short and thick, with round apex.

Unknown.

Holotype ♂, Hubei: Shennongjia, Dalongtan pound (31°75'N, 110°67'E), 1.VII.2009, Qifei Liu. Paratypes, 5♂♂, same data as holotype. Type specimens are stored in 75% ethanol.

Known only from the type locality in Hubei.

This new species is similar to Chrysotimus lijianganus Yang & Saigusa, but may be separated from the latter by 2 pd on hind tibia, 4-5 black ventral bristles on hind tarsomere 1, and slender, finger-like surstylus. In Chrysotimus lijianganus, the hind tibia has 1 pd, hind tarsomere 1 has 7–8 black ventral bristles at base, and the surstylus is very wide (Yang and Saigusa 2001b).

The specific epithet derives from the type locality Hubei.

3♂♂6♀♀, Liaoning: Kuandian, Quanshan Linchang (40°73'N, 124°78'E, 650m), 9. VII. 2009, Yan Li.

Liaoning (Kuandian), Zhejiang (Tianmushan).