Stegana (Steganina) xishuangbanna sp. nov.

(Figs 58–64)

Diagnosis. This species is related to S. saigusai from Kumamoto, Japan, but clearly distinguishable from the latter by the aedeagus (in S. saigusai: aedeagal opening nearly triangular in ventral view, with longer and even tentaclelike setae).

Description. Male terminalia: Epandrium strongly protruded ventrally (Fig. 58). Cercus lacking pubescence (Fig. 58). Surstylus with 5 prensisetae submedially (Fig. 59). Tenth sternite furcated basally, protruded apically (Fig. 60). Paramere with ca. 5–6 sensilla (Figs 61, 62). Aedeagus lacking minute processes, slightly rhombic on opening in ventral view (Figs 61, 62). Dorsomedial projection of gonopods with serrated, minute processes distally (Figs 63, 64).

Measurements. BL = 2.40 mm in holotype (range in 23 and 2Ƥ paratypes: 2.35–2.66 mm in 3, 2.56–2.58 mm in Ƥ), ThL = 1.34 mm (1.28–1.70 mm in 3, 1.84–1.90 mm in Ƥ), WL = 2.63 mm (2.59–3.28 mm in 3, 2.65– 2.89 mm in Ƥ), WW = 1.12 mm (1.08–1.40 mm in 3, 1.42–1.52 mm in Ƥ), arb = 8/6 (7/5–9/6), avd = 0.83 (0.75– 0.83), adf = 1.83 (1.50–1.86), flw = 2.00 (1.63–1.75), FW/HW = 0.43 (0.43–0.44), ch/o = 0.21 (0.20–0.26), prorb = 1.08 (1.07–1.08), rcorb = 0.83 (0.75–0.80), vb = 0.36 (0.38–0.42), dcl = 0.50 (0.46–0.52), presctl = 0.51 (0.54– 0.62), sctl = 1.20 (1.15–1.36), sterno = 0.79 (0.83), orbito = 2.00 (2.00–2.25), dcp = 0.22 (0.18–0.21), sctlp = 1.70 (1.75–2.00), C = 2.24 (1.79–2.13), 4c = 0.97 (1.09–1.27), 4v = 1.63 (1.50–1.86), 5x = 1.50 (1.55–1.70), ac = 7.25 (7.00–8.25), M = 0.50 (0.47–0.65), C3F = 0.84 (0.82–0.88).

Type material. Holotype 3 (SCAU, No. 120782), CHINA: Mengyang, Xishuangbanna, Yunnan, 22°20' N, 100°54' E, 600 m, 14.ix.2002, HW Chen. Paratypes: CHINA: 132Ƥ (SCAU, Nos 120783 -85), same data as holotype; 33 (SCAU, Nos 120786 -88), Menglun, Xishuangbanna, Yunnan, 21°41 N, 101°25 E, 700 m, 17– 19.iv.2007, HW Chen, JJ Gao; 33 (KIZ), Mengla, 21°28' N, 101°38' E, 600 m, Xishuangbanna, Yunnan, 21– 24.iv.2007, HW Chen.

Distribution. China (Yunnan).

Etymology. The specific name means “dreamy and mystical eden” in the language of the Dai nationality in Xishuangbanna .