Sounama (Stenaulophrys) nigra sp. nov.

(figures 89, 90, 109)

Length: 4.5⎯5.0 mm, 5.0⎯5.6 mm.

Dorsum dark brown; fore wing with a hyaline triangular shaped patch subapically on costal margin.Vertex without a medial longitudinal carina.

Male genitalia with subgenital plate (figure 90) with basal expanded region large, nearly rectangular in ventrolateral aspect, a little widening apically, apical margin distinctly incised near middle in ventrolateral aspect, tapering apically along outer edge into dorsally directed, very short stout spinous process; style with apical process relatively strong and aedeagal shaft (figure 89) narrow throughout length.

Etymology. Named for its dark colour.

Material examined. HOLOTYPE:, China: Yunnan, Xishuangbanna, Menghun, 1200⎯1400 m, 17 May 1958 (X.-W. Meng) (IZCAS). PARATYPES: China, Yunnan: 6, 15, same data as holotype except, 17 May 1958 (L.-Y. Zheng), 17, 19 May 1958 (C.-P. Hong), 23 May and 17 June 1958 (Y.-R. Zhang); 1, Longling, 1200 m, 19 May 1955 (Kryzhanovskij); 1, Xishuangbanna, Damenglong, 650 m, 17 April 1958 (F.-J. Pu); 1, Xishuangbanna, Menga, 1050⎯1080 m, 17 May 1958 (S.-Y. Wang); 1, Xishuangbanna, Menghai, Mt Nuoshan, 1200 m, 24 April 1957 (L.-C. Zang); 1, Xishuangbanna, Mengsong, 1600 m, 21 May 1958 (C.-P. Hong); 1, Xiaomengyang, 850 m, 2 April 1957 (D.-H. Liu) (IZCAS, BMNH); Tibet: 1, 2, Tangmai, 2050 m, 27 July 1978 (F.-S. Li) (IZCAS; CAUIC); 1, Bomi, Tangmai, 2100 m, 9 September 1973 (F.-S. Huang) (IZCAS); 1, 3, Me^dog, 1050⎯1250 m, 19 September 1979 and 9, 11 May 1980 (G.-T. Jin and J.-Y. Wu) (SIE); 1, Nyingchi, 11 July 1997 (C.-D. Zhu) (IZCAS).

Distribution. Southwestern China (Yunnan, Tibet).

Remarks. This species can be distinguished from other species by its darker appearance. There is some variation in the shape of the subgenital plates in ventral aspect in the specimens from southeastern Tibet.