利川果蝇Drosophila (Drosophila) lichuanensis Zhang et Liang, 1994

鉴别特征：该种属quadrisetata 种组，似D. (D.) potamophila Toda et Peng 1989，C3F 几乎占总长。但阳茎形状不同，且阳茎端表面具小刺突，下颚须端并不加宽，具前阳基侧突。尤其是生殖弓与肛板在下端相连，这一特征与D. (D.) multidentata Watabe et Zhang 1990 相似，而robusta种组的种生殖弓与肛板相连，暗示着该种与robusta种组间的系统发育关系。

分布区域：湖北。

文献：张文霞，梁醒财，1994，滇、鄂产果蝇三新种，昆虫分类学报，16（3）：213-219

Remark: This species belongs to quadrisetata species-group, resembles D. (D.) potamophila Toda et Peng 1989 in having C3F almost equal to 1, but differs from the latter in the shape of aedeagus which with small spines at surface apically. Especially cercus fused to epandrium at submedian portion, this character likes that of D. (D.) multidentata Watabe et Zhang 1990. Since the cercus in the robusta species-group fuses to epandrium, the same type cercus found in D. (D.) multidentata and D. (D.) lichuanensis, implies the phylogenetic relationship between these two species and the robusta group.

Distribution: Hubei.

Reference: Wenxia Zhang, Xingcai Liang 1994, Three new species of Drosophilid Flies (Diptera: Drosophilidae) from Yunnan and Hubei, China, Entomotaxonomia, 16 (3): 213–219.