Stegana (Oxyphortica) nigripennis ( Hendel, 1914 )

Chen, Hong-wei & Wang, Bao-cheng, 2004, Stegana (Oxyphortica) Nigripennis Species-Group, With Descriptions Of Four New Species From Southeast Asia (Insecta: Diptera: Drosophilidae), Raffles Bulletin of Zoology 52 (1), pp. 29-36 : 30

Stegana (Oxyphortica) nigripennis ( Hendel, 1914)

( Fig. 2 )

Orthostegana nigripennis Hendel, 1914: 115 .

Chaetocnema (Oxyphortica) poeciloptera Duda, 1926: 243 ; synonymized by Okada, 1971: 89.

Protostegana kanoi Okada, 1956: 14 ; synonymized by Okada, 1968: 304.

Stegana (Stegana) nigripennis - Okada, 1968: 304.

Stegana (Orhtostegana) nigripennis - Okada, 1971: 89.

Stegana (Oxyphortica) nigripennis - Wheeler, 1981: 30; Okada, 1988: 27.

Material examined. – JAPAN: Holotype male of Protostegana kanoi Okada, 1956 , Ishigakijima , coll. Kano, 19 Sep.1955 ( NSMT); 8 males, 12 females, Uehaha, Iriomote Is., Ryukyu Is., coll. M. J. Toda & H. - w. Chen 10-21 Jun.1999 (2 males, 2 females, SEHU; 6 males, 10 females, SCAU).

Distribution. – China (Taiwan), Japan (Kyushu, Ryukyu Is.).

Description. – Head: Eyes red, with pale band medially ( Fig. 2 ). Ocellar triangle black. Frons yellow above, black below. Fronto-orbital plate yellow. Pedicel yellow; first flagellomere yellowish to greyish yellow. Face yellow, with 1 narrow, black band in lower 1/3; facial carina low. Clypeus brown. Gena yellow. Palpus greyish yellow to brown, rod-like, with 1 prominent subapical and 1 row of moderate ventral setae. Vibrissa prominent.

Thorax: Postpronotal lobe yellow, with 1 long seta. Scutellum medially black, yellow along entire margin. Katepisternum with 3 setae, medial one shorter than the others.

Wing: Costal vein between R 2+3 and R 4+5 with ca. 7-8 peglike spinules on ventral surface. R 4+5 weakly convergent to M 1 distally.

Figures

Fig. 2. Stegana (Oxyphortica) nigripennis (Hendel) on a tree trunk. Photographs are provided by Dr. T. Yoshida (Hokkaido University, Japan) and were taken at Iriomote Is., Ryukyu Is., Japan.