25. Dohrniphora insulana Liu

(Figs. 49–50, 66)

Dohrniphora insulana Liu, 2001:106 .

Male: Frons dark brown, with sparse hairs. First row of bristles convex, antials 2 times as far apart as either is to an antero-lateral. Second row of bristles slightly concave, all four bristles being equidistant. Postpedicels yellow, darker at apex, globose. Arista with relatively long hairs. Palp yellow, 3 times as long as its width, with 5 apical bristles. Thorax. Scutum brown. Pleuron yellow. Scutellum yellowish brown, with 4 bristles, of which anterior 2 are a little short. Wing length 2.4–2.6mm. Costal index 0.52. Costal ratios 9.5–12:3.6–3.75:1. Costal cilia 0.06mm. Veins brown and membrane light grey. Halter yellow. Legs yellow. Fore tibia with 4–6 dorsal bristles, of which the upmost is the longest. Dorsal hair palisade of mid tibia extends only 1/3 of its length. Hind tibia without isolated bristles before apical apex. Hind femur yellow, except darker at dorsal edge. Posterior face of hind femur with 10– 14 peg-like bristles arranged in a cluster, which stronger upside and weaker downside. Hind coxal lobes triangular. Abdomen. Tergites uniformly dark brown, except tergite I and venter dark brown. Tergites with sparse hairs. Terminalia brown. Cercus yellowish brown. Body length 2.25–2.75mm.

Female: The main differences from male are as follows: Pre-ocellar bristles much higher on frons than mediolateral. Postpedicels globose, not pointed. Palp yellow, 2 times as long as its width. Wing length 2.30–2.85mm. Costal index 0.57. Costal ratios 10.25–11.75:3.50:1. Costal cilia 0.06 mm. Body length2.4–3.0mm.

Specimens identified: 1♂ (holotype), Hainan, Jianfeng (18°43' N, 108°48' E, 850m), 15-IV-1992, Guang- Chun Liu and Min Wang; 14♂ 12♀(paratypes), China: Jianfeng (18°43' N, 108°48'E, 850m), Hainan. 15-IV-1992, Guang-Chun Liu and Min Wang; 1♂ 2♀, Mt. Wuzhi (18°53'N, 109°41'E, 850m), Hainan, 16-IV-1992, Guang-Chun Liu and Min Wang.

Remarks. This species is very abundant in the mountain area of the island Hainan, China. It is similar to D. kisteri Disney in term of group of peg-like bristles, but different in having four bristles on the scutellum and a dorsal hair palisade extending 1/3 of tibia and a larger wing size.