Diamesa sunabacedea (Tanaka et Sasa), comb. nov.

(Figs. 24–25)

Diamesa sunabacedea (Tanaka et Sasa, 2001: 45, Fig. 3 a–j) (as Pseudodiamesa). [Holotype 350: 024.]

In the description of Pseudodiamesa sunabacedea, Tanaka and Sasa (2001) erroneously stated that tarsomere IV is cylindrical. Actually, it is cordiform. Based on the shape of tarsomere IV, presence of inner verticals, and the structure of the hypopygium, the species undoubtedly belongs in Diamesa Meigen.

Diamesa sunabacedea is very similar to D. insidiosa described by Serra-Tosio (1983) from Nepal, particularly in the shape of the hypopygium (Figs. 24–25). However, D. sunabacedea has a higher antennal ratio and there are minor differences in the shape of the sternapodeme, basal plate and medial field, which apparently render the two species distinct.