Drosophila (Drosophila) karakasa Watabe et Liang, 1990

Diagnosis: Small and yellowish brown species with cercus separated from epandrium. Palpus short, with short hairs but without stout bristles. 4C-index ca. 7/9 and C3-fringe ca 3/5. Surstylus rectangular, distally with ca. 7 primary teeth and ca. 7 short bristles. Lobe of ovipositor brown; much darker on ventral margin, roundish at tip. Spermatheca cone-shaped, with sparce horizontal stripes on basal half of outer capsule.

Remark: D. karakasa somewhat resembles D. potamophila in the general morphology and chaetotaxy, but clearly distinguishable from the latter by the diagnostic characters. The aedeagus of this species is very similar to that of four species of the D. robusta species-group: D. okadai Takada, D. neokadai Kaneke et Takada, D. gani Liang et Zhang and D. unimaculata Strobl.

Distribution: Yunnan.

Reference: H.-A Watabe, X.C. Liang; W.X. Zhang 1990, The Drosophila polychaeta and the D. quadrisetata species groups (Diptera: Drosophilidae) from Yunnan Province, Southern China, Zoological Science, 7 (3): 459–467.