Isoneuromyia formosana (Okada), n. stat.

Zelmira annandalei f. formosana Okada, 1938: 36 .

This species was originally described as a form of the Indian annandalei Brunetti. It is obviously a separate species based on characters given in the key above and its geographical distance from the range of annandalei both warrant raising it to specific status in this study.