Classification, annotated list and keys for the black flies (Diptera: Simuliidae) of Peninsular Malaysia Author Takaoka, Hiroyuki Author Ya’Cob, Zubaidah Author Sofian-Azirun, Mohd text Zootaxa 2018 2018-10-12 4498 1 1 65 journal article 29003 10.11646/zootaxa.4498.1.1 e3157d39-d48d-4df2-94a8-b097803e4342 1175-5326 1459138 334E786F-2793-4F10-909C-4ABBDA4075ED 20 . Simulium ( Gomphostilbia ) sextuplum Takaoka & Davies, 1995 Simulium ( Gomphostilbia ) sextuplum Takaoka & Davies, 1995: 28 –32 (Female, pupa and larva). This species was described from females, pupae and larvae (Takaoka and Davies, 1995). The male of this species is unknown. It is characterized in the female by the frons almost bare except several hairs along both lateral margins, and in the pupa by the gill with six long slender filaments arranged as (2+2)+2 from dorsal to ventral. The pupae and larvae were collected from Bentong ( type locality), Pahang . No additional specimens were available.