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 species-group

Diagnosis. – Interfrontal setulae dense, thick; lunule developed, black; mesonotum and pleura yellow with 3-4 black, longitudinal stripes ( Fig. 2 ); wing dark brown to black, pale along posterior margin, with 3-4 yellow patches: one in the r 4+5 cell, one in the dm cell and one just beyond the latter ( Fig. 2 ).

Legs: Yellow; all femora distally and tibiae basally brown to black; mid femur with 2-3 rows of strong, anterior setae.

Abdomen: Tergites yellow anteriorly, with laterally protruded, black band on posterior margin. Sternites yellow, narrow, long.

Male terminalia: Epandrium broad, with strong setae along posterior margin, pubescent except for anterior to ventral margins. Surstylus not pubescent, several distinct setae on distal margin and inner surface. Cercus small, separated from epandrium, pubescent and setigerous. Hypandrium somewhat oblong, antero-medially and laterally contiguous to paramere. Gonopods bilobed, baso-laterally contiguous to posterior ends of hypandrium, apico-laterally contiguous to surstylus. Paramere with several small sensilla submedially. Aedeagus bifurcate, basally contiguous to arm of aedeagal apodeme. Aedeagal apodeme long, rod-shaped.

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.