Morphotaxonomy of the Simulium (Simulium) tuberosum species group (Diptera: Simuliidae) in Thailand Author Tangkawanit, Ubon Author Kuvangkadilok, Chaliow Author Baimai, Visut Author Adler, Peter H. text Zootaxa 2009 2048 31 46 journal article 10.5281/zenodo.186496 a6aa7826-075e-4c7e-a095-ea3a3cd23017 1175-5326 186496 Simulium rufibasis Brunetti, 1911 Simulium rufibasis is distinguished from other species in the Thai tuberosum group by having pupae with conical cephalic microtubercles ( Fig. 4 B) and gill filaments moderately stalked and decreasing slightly in thickness from dorsal to ventral ( Fig. 7 C), females with sternite VII bearing a pair of medium-long clustered hairs, and males with the median sclerite about as long as wide and nearly parallel sided ( Fig. 9 B). Further study is needed to determine if S. rufibasis in Thailand is conspecific with the type of S. rufibasis from West Bengal, India .