Drosophila (Drosophila) multidentata Watabe et Liang, 1990                         

    Diagnosis: Dull brown species, with cercus fused to epandrium at submedian portion. Or 2 ca. 4/9 length of Or 1. C3-fringe ca 5/9. Lobe of ovipositor with many irregular teeth. Spermatheca slender, with sparce oblique lines on basal 1/3 of outer capsule.

    Remark: One of the diagnostic characters for the D. quadrisetata species-group described by Tada and Peng (1989) is “circus separated from epandrium”. The circus of D. multidentata fuses to epandrium at its lower portion. However, D. multidentata should be involved in the quadrisetata species-group by the following characters: 1) two extra pairs of dorsocentrals and prominent acrostichal bristles present, 2) C-index ca. 3.54, 3) 4V-index ca. 1.69, and 4) aedeagus large and curved ventrally. Since the circus in the robusta species-group fuses to epandrium, the same type circus found in D. multidentata, as well as the large value of C-index and the shape of aedeagus, implies the phylogenetic relationship between this species and the robusta group.

    Distribution: Yunnan.