Simulium (Gomphostilbia) sofiani, a new species of black fly (Diptera: Simuliidae) from peninsular Malaysia

摘要

Simulium (Gomphostilbia) sofiani sp. nov. is described on the basis of rearedadult female, male, pupal and larval specimens collected from Cameron Highlands, Pahangstate, Malaysia. This new species is placed in the ceylonicum species-group within thesubgenus Gomphostilbia and is easily distinguished from all the related known species by thecombination of the following characteristics: an elongate sensory vesicle and yellow hair tufton the stem vein of the wing in the female, the greater number of large upper-eye facets (15or 16 vertical columns and 15 or 16 horizontal rows) and almost entirely darkened hindbasitarsus in the male, and the gill bearing a long common basal stalk and 8 filamentsarranged as [(1+2)+ (1+2)] +2 filaments from dorsal to ventral in the pupa.