Simulium doipuiense Takaoka and Choochote, 2005 a (complex)

Simulium doipuiense consists of two cytoforms, A and B (Tangkawanit et al. 2009). The morphological characters of S. doipuiense A agree with those of the original description of S. doipuiense (Takaoka & Choochote 2005a), suggesting that cytoform A represents true S. doipuiense . The diagnostic characters of cytoform A are the presence in the pupa of microtubercles on the antennal sheaths (Fig. 6), rounded cephalic microtubercles (Fig. 4 A), gill filaments with short stalks, the stalk of the dorsal pair directed upward, and the thickness and length of the filaments slightly decreasing from dorsal to ventral (Fig. 7 A); a pair of clustered medium long hairs on sternite VII of the female; and a nearly bare basal protuberance on the gonostylus of the male. The larvae, similar to those of S. manooni and S. rufibasis, have a reddish body. Simulium doipuiense B is known only as larvae, which are similar to those of S. doipuiense A, with slight numerical differences (Table 2). The postgenal cleft of cytoform B (Fig. 3 B) can be similar to that of cytoform A or broader.