Stegana (Steganina) fusca Li & Chen, sp. nov.

(Figs. 8I, 8J, 40)

Diagnosis. This species differs from the other Steganina species in having the small body size (BL ranged from 2.33–2.85 mm in measured specimens) and the relatively light body color (Fig. 8I, J); the aedeagal opening nearly triangular in ventral view, with thick pubescence (Fig. 40B).

Description. Male and female: First flagellomere brown. Clypeus yellow. Mesonotum brownish yellow in male, brown medially, brownish laterally in female (Fig. 8I). Katepisternum yellowish (Fig. 8J). Scutellum brownish medially, brown laterally (Fig. 8I). Halter mostly brownish (Fig. 8J). Fore femur with a row of 3 strong setae on distal part of posteroventral surface. Abdominal tergites yellow to brownish in male (Fig. 8I, J), brown in female; sternites brown, slightly wider than long. Male terminalia (Fig. 40): Epandrium with ca. 10 setae on dorsal to posterior portions per side (Fig. 40A). Surstylus with 1 peg-like tooth and several setulae near distal margin, lacking pubescence (Fig. 40A). Cercus lacking pubescence (Fig. 40A). Hypandrium roundly expanded anteromedially (Fig. 40B, C). Pregonite with 5 sensilla (Fig. 40B, C). Aedeagal sheath distally dorsad curved and with several minute, serrated processes (Fig. 40D, E). Subepandrial sclerite slightly vaulted (Fig. 40F).

Measurements and indices. BL = 2.75 mm in holotype (2.33–2.73 in 2♂, 2.37–2.85 in 3♀ paratypes), ThL = 1.29 mm (1.15–1.34 in ♂, 1.21–1.34 in ♀), WL = 2.21 mm (2.25–2.68 in ♂, 2.41–2.65 in ♀), WW = 1.14 mm (1.01–1.24 in ♂, 0.95–1.16 in ♀), arb = 7/3 (6–8/4–5), avd = 0.63 (0.74–0.89), adf = 1.24 (1.03–1.50), flw = 1.85 (2.36–3.13), FW/HW = 0.41 (0.37–0.43), ch/o = 0.26 (0.16–0.39), prorb = 1.35 (0.83–1.06), rcorb = 1.10 (0.57– 0.72), vb = 0.89 (0.61–0.75), dcl = 0.66 (0.54–0.75), presctl = 0.64 (0.52–0.78), sctl = 1.90 (1.87–2.52), sterno = 0.89 (0.67–1.14), orbito = 1.62 (1.63–2.05), dcp = 0.30 (0.29–0.36), sctlp = 1.39 (1.33–1.93), C = 1.65 (1.49–1.82), 4c = 1.04 (1.24–1.56), 4v = 1.44 (1.68–2.14), 5x = 1.53 (1.45–1.85), ac = 11.33 (9.91–13.00), M = 0.50 (0.59–0.74), C3F = 0.69 (0.56–0.70).

Type materials. Holotype ♂ (SCAU, No. 125686, DNA #2172), CHINA: Mengdong, Cangyuan, Yunnan, 23°10'08''N, 99°13'52''E, alt. 1320m, 10.v.2016, ex tree trunk, Y.L. Wang . Paratypes: 2♂, 3♀ (SCAU, Nos. 125687– 91, DNA #2729), Muyiji Park, Ximeng, Yunnan, 22°37'13''N, 99°35'45''E, alt. 1100m, 30.iv.2016, ex tree trunks, J. Huang, Y.Q. Liu, Y.L. Wang, L. Zhu.

Distribution. China (Yunnan).

Etymology. From the Latin word " fuscus " (= brown), referring to the brown body color.