Drosophila (Drosophila) ichinosei Zhang et Toda, 1995

Diagnosis: Dm-cu crossvein clear. Epandrium ventrally with ca. 6 normal, long setae, 2 apicals not stout. Surstylus somewhat triangular, elongate below, with 2 rows of stout setae: outer row consisting of ca. 16 shout, apically round primary prensisetae which are ventrally reduced in size, inner row consisting of ca. 9 long, apically pointed setae which are ventrally reduced in width and becoming spine-like. Dorsal process of aedeagus with minute spinules on distal surface.

Remark: This species is closely related to D. metasetigerata Gupta et Kuma, 1986 and D. kitagawai Toda, 1986, but distinguishable from them by the diagnostic characters, i.e., in metasetigerata the dm-cu clouded, 2 setae at ventral apex of epandrium stout; in kitagawai the surstylus with ca. 8 or 9 primary presisetae in a slightly oblique row on upper to middle distal margin but not inner row of stout setae.

Distribution: Philippines (Luzon).

Reference: Wenxia Zhang, Masanori J. Toda, Hide-aki Watabe 1995, Fourteen new species of the Drosophila (Drosophila) immigrans species-group (Diptera) from the Oriental region, Japanese Journal of Entomology, 63 (1): 25–51.