Simulium setsukoae Takaoka and Choochote, 2004 a

This species is recognized by the dark gray to grayish brown larvae (Fig. 1 C) with a diffuse brown area posterolaterally on the head capsule (Fig. 2 E); pupae without microtubercles on the antennal sheaths, rounded cephalic microtubercles (Fig. 4 C), narrow gill filaments decreasing in thickness from dorsal to ventral, and gill stalks decreasing slightly in length from dorsal to ventral (Fig. 7 D); females with sternite VII bearing short clusters of hairs; and males with a teardrop-shaped median sclerite (Fig. 9 C) and about 20 upper ommatidia per column in the compound eye.